fasthttp

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Version: v0.0.0-...-5dc8409 Latest Latest
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Published: Jan 28, 2018 License: Apache-2.0, MIT Imports: 30 Imported by: 0

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fasthttp

Fast HTTP implementation for Go.

Currently fasthttp is successfully used by VertaMedia in a production serving up to 200K rps from more than 1.5M concurrent keep-alive connections per physical server.

TechEmpower Benchmark round 12 results

Server Benchmarks

Client Benchmarks

Install

Documentation

Examples from docs

Code examples

Switching from net/http to fasthttp

Fasthttp best practices

Tricks with byte buffers

Related projects

FAQ

HTTP server performance comparison with net/http

In short, fasthttp server is up to 10 times faster than net/http. Below are benchmark results.

GOMAXPROCS=1

net/http server:

$ GOMAXPROCS=1 go test -bench=NetHTTPServerGet -benchmem -benchtime=10s
BenchmarkNetHTTPServerGet1ReqPerConn                	 1000000	     12052 ns/op	    2297 B/op	      29 allocs/op
BenchmarkNetHTTPServerGet2ReqPerConn                	 1000000	     12278 ns/op	    2327 B/op	      24 allocs/op
BenchmarkNetHTTPServerGet10ReqPerConn               	 2000000	      8903 ns/op	    2112 B/op	      19 allocs/op
BenchmarkNetHTTPServerGet10KReqPerConn              	 2000000	      8451 ns/op	    2058 B/op	      18 allocs/op
BenchmarkNetHTTPServerGet1ReqPerConn10KClients      	  500000	     26733 ns/op	    3229 B/op	      29 allocs/op
BenchmarkNetHTTPServerGet2ReqPerConn10KClients      	 1000000	     23351 ns/op	    3211 B/op	      24 allocs/op
BenchmarkNetHTTPServerGet10ReqPerConn10KClients     	 1000000	     13390 ns/op	    2483 B/op	      19 allocs/op
BenchmarkNetHTTPServerGet100ReqPerConn10KClients    	 1000000	     13484 ns/op	    2171 B/op	      18 allocs/op

fasthttp server:

$ GOMAXPROCS=1 go test -bench=kServerGet -benchmem -benchtime=10s
BenchmarkServerGet1ReqPerConn                       	10000000	      1559 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet2ReqPerConn                       	10000000	      1248 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10ReqPerConn                      	20000000	       797 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10KReqPerConn                     	20000000	       716 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet1ReqPerConn10KClients             	10000000	      1974 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet2ReqPerConn10KClients             	10000000	      1352 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10ReqPerConn10KClients            	20000000	       789 ns/op	       2 B/op	       0 allocs/op
BenchmarkServerGet100ReqPerConn10KClients           	20000000	       604 ns/op	       0 B/op	       0 allocs/op

GOMAXPROCS=4

net/http server:

$ GOMAXPROCS=4 go test -bench=NetHTTPServerGet -benchmem -benchtime=10s
BenchmarkNetHTTPServerGet1ReqPerConn-4                  	 3000000	      4529 ns/op	    2389 B/op	      29 allocs/op
BenchmarkNetHTTPServerGet2ReqPerConn-4                  	 5000000	      3896 ns/op	    2418 B/op	      24 allocs/op
BenchmarkNetHTTPServerGet10ReqPerConn-4                 	 5000000	      3145 ns/op	    2160 B/op	      19 allocs/op
BenchmarkNetHTTPServerGet10KReqPerConn-4                	 5000000	      3054 ns/op	    2065 B/op	      18 allocs/op
BenchmarkNetHTTPServerGet1ReqPerConn10KClients-4        	 1000000	     10321 ns/op	    3710 B/op	      30 allocs/op
BenchmarkNetHTTPServerGet2ReqPerConn10KClients-4        	 2000000	      7556 ns/op	    3296 B/op	      24 allocs/op
BenchmarkNetHTTPServerGet10ReqPerConn10KClients-4       	 5000000	      3905 ns/op	    2349 B/op	      19 allocs/op
BenchmarkNetHTTPServerGet100ReqPerConn10KClients-4      	 5000000	      3435 ns/op	    2130 B/op	      18 allocs/op

fasthttp server:

$ GOMAXPROCS=4 go test -bench=kServerGet -benchmem -benchtime=10s
BenchmarkServerGet1ReqPerConn-4                         	10000000	      1141 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet2ReqPerConn-4                         	20000000	       707 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10ReqPerConn-4                        	30000000	       341 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10KReqPerConn-4                       	50000000	       310 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet1ReqPerConn10KClients-4               	10000000	      1119 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet2ReqPerConn10KClients-4               	20000000	       644 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet10ReqPerConn10KClients-4              	30000000	       346 ns/op	       0 B/op	       0 allocs/op
BenchmarkServerGet100ReqPerConn10KClients-4             	50000000	       282 ns/op	       0 B/op	       0 allocs/op

HTTP client comparison with net/http

In short, fasthttp client is up to 10 times faster than net/http. Below are benchmark results.

GOMAXPROCS=1

net/http client:

$ GOMAXPROCS=1 go test -bench='HTTPClient(Do|GetEndToEnd)' -benchmem -benchtime=10s
BenchmarkNetHTTPClientDoFastServer                  	 1000000	     12567 ns/op	    2616 B/op	      35 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1TCP               	  200000	     67030 ns/op	    5028 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd10TCP              	  300000	     51098 ns/op	    5031 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd100TCP             	  300000	     45096 ns/op	    5026 B/op	      55 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1Inmemory          	  500000	     24779 ns/op	    5035 B/op	      57 allocs/op
BenchmarkNetHTTPClientGetEndToEnd10Inmemory         	 1000000	     26425 ns/op	    5035 B/op	      57 allocs/op
BenchmarkNetHTTPClientGetEndToEnd100Inmemory        	  500000	     28515 ns/op	    5045 B/op	      57 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1000Inmemory       	  500000	     39511 ns/op	    5096 B/op	      56 allocs/op

fasthttp client:

$ GOMAXPROCS=1 go test -bench='kClient(Do|GetEndToEnd)' -benchmem -benchtime=10s
BenchmarkClientDoFastServer                         	20000000	       865 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1TCP                      	 1000000	     18711 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd10TCP                     	 1000000	     14664 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd100TCP                    	 1000000	     14043 ns/op	       1 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1Inmemory                 	 5000000	      3965 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd10Inmemory                	 3000000	      4060 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd100Inmemory               	 5000000	      3396 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1000Inmemory              	 5000000	      3306 ns/op	       2 B/op	       0 allocs/op

GOMAXPROCS=4

net/http client:

$ GOMAXPROCS=4 go test -bench='HTTPClient(Do|GetEndToEnd)' -benchmem -benchtime=10s
BenchmarkNetHTTPClientDoFastServer-4                    	 2000000	      8774 ns/op	    2619 B/op	      35 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1TCP-4                 	  500000	     22951 ns/op	    5047 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd10TCP-4                	 1000000	     19182 ns/op	    5037 B/op	      55 allocs/op
BenchmarkNetHTTPClientGetEndToEnd100TCP-4               	 1000000	     16535 ns/op	    5031 B/op	      55 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1Inmemory-4            	 1000000	     14495 ns/op	    5038 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd10Inmemory-4           	 1000000	     10237 ns/op	    5034 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd100Inmemory-4          	 1000000	     10125 ns/op	    5045 B/op	      56 allocs/op
BenchmarkNetHTTPClientGetEndToEnd1000Inmemory-4         	 1000000	     11132 ns/op	    5136 B/op	      56 allocs/op

fasthttp client:

$ GOMAXPROCS=4 go test -bench='kClient(Do|GetEndToEnd)' -benchmem -benchtime=10s
BenchmarkClientDoFastServer-4                           	50000000	       397 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1TCP-4                        	 2000000	      7388 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd10TCP-4                       	 2000000	      6689 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd100TCP-4                      	 3000000	      4927 ns/op	       1 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1Inmemory-4                   	10000000	      1604 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd10Inmemory-4                  	10000000	      1458 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd100Inmemory-4                 	10000000	      1329 ns/op	       0 B/op	       0 allocs/op
BenchmarkClientGetEndToEnd1000Inmemory-4                	10000000	      1316 ns/op	       5 B/op	       0 allocs/op

Install

go get -u github.com/valyala/fasthttp

Switching from net/http to fasthttp

Unfortunately, fasthttp doesn't provide API identical to net/http. See the FAQ for details. There is net/http -> fasthttp handler converter, but it is advisable writing fasthttp request handlers by hands for gaining all the fasthttp advantages (especially high performance :) ).

Important points:

  • Fasthttp works with RequestHandler functions instead of objects implementing Handler interface. Fortunately, it is easy to pass bound struct methods to fasthttp:

    type MyHandler struct {
    	foobar string
    }
    
    // request handler in net/http style, i.e. method bound to MyHandler struct.
    func (h *MyHandler) HandleFastHTTP(ctx *fasthttp.RequestCtx) {
    	// notice that we may access MyHandler properties here - see h.foobar.
    	fmt.Fprintf(ctx, "Hello, world! Requested path is %q. Foobar is %q",
          ctx.Path(), h.foobar)
    }
    
    // request handler in fasthttp style, i.e. just plain function.
    func fastHTTPHandler(ctx *fasthttp.RequestCtx) {
    	fmt.Fprintf(ctx, "Hi there! RequestURI is %q", ctx.RequestURI())
    }
    
    // pass bound struct method to fasthttp
    myHandler := &MyHandler{
    	foobar: "foobar",
    }
    fasthttp.ListenAndServe(":8080", myHandler.HandleFastHTTP)
    
    // pass plain function to fasthttp
    fasthttp.ListenAndServe(":8081", fastHTTPHandler)
    
  • The RequestHandler accepts only one argument - RequestCtx. It contains all the functionality required for http request processing and response writing. Below is an example of a simple request handler conversion from net/http to fasthttp.

    // net/http request handler
    requestHandler := func(w http.ResponseWriter, r *http.Request) {
    	switch r.URL.Path {
    	case "/foo":
          fooHandler(w, r)
    	case "/bar":
          barHandler(w, r)
    	default:
          http.Error(w, "Unsupported path", http.StatusNotFound)
    	}
    }
    
    // the corresponding fasthttp request handler
    requestHandler := func(ctx *fasthttp.RequestCtx) {
    	switch string(ctx.Path()) {
    	case "/foo":
          fooHandler(ctx)
    	case "/bar":
          barHandler(ctx)
    	default:
          ctx.Error("Unsupported path", fasthttp.StatusNotFound)
    	}
    }
    
  • Fasthttp allows setting response headers and writing response body in arbitrary order. There is no 'headers first, then body' restriction like in net/http. The following code is valid for fasthttp:

    requestHandler := func(ctx *fasthttp.RequestCtx) {
    	// set some headers and status code first
    	ctx.SetContentType("foo/bar")
    	ctx.SetStatusCode(fasthttp.StatusOK)
    
    	// then write the first part of body
    	fmt.Fprintf(ctx, "this is the first part of body\n")
    
    	// then set more headers
    	ctx.Response.Header.Set("Foo-Bar", "baz")
    
    	// then write more body
    	fmt.Fprintf(ctx, "this is the second part of body\n")
    
    	// then override already written body
    	ctx.SetBody([]byte("this is completely new body contents"))
    
    	// then update status code
    	ctx.SetStatusCode(fasthttp.StatusNotFound)
    
    	// basically, anything may be updated many times before
    	// returning from RequestHandler.
    	//
    	// Unlike net/http fasthttp doesn't put response to the wire until
    	// returning from RequestHandler.
    }
    
  • Fasthttp doesn't provide ServeMux, but there are more powerful third-party routers and web frameworks with fasthttp support exist:

    Net/http code with simple ServeMux is trivially converted to fasthttp code:

    // net/http code
    
    m := &http.ServeMux{}
    m.HandleFunc("/foo", fooHandlerFunc)
    m.HandleFunc("/bar", barHandlerFunc)
    m.Handle("/baz", bazHandler)
    
    http.ListenAndServe(":80", m)
    
    // the corresponding fasthttp code
    m := func(ctx *fasthttp.RequestCtx) {
    	switch string(ctx.Path()) {
    	case "/foo":
          fooHandlerFunc(ctx)
    	case "/bar":
          barHandlerFunc(ctx)
    	case "/baz":
          bazHandler.HandlerFunc(ctx)
    	default:
          ctx.Error("not found", fasthttp.StatusNotFound)
    	}
    }
    
    fastttp.ListenAndServe(":80", m)
    
  • net/http -> fasthttp conversion table:

    • All the pseudocode below assumes w, r and ctx have these types:
      var (
          w http.ResponseWriter
          r *http.Request
          ctx *fasthttp.RequestCtx
      )
    
  • VERY IMPORTANT! Fasthttp disallows holding references to RequestCtx or to its' members after returning from RequestHandler. Otherwise data races are inevitable. Carefully inspect all the net/http request handlers converted to fasthttp whether they retain references to RequestCtx or to its' members after returning. RequestCtx provides the following band aids for this case:

    • Wrap RequestHandler into TimeoutHandler.
    • Call TimeoutError before returning from RequestHandler if there are references to RequestCtx or to its' members. See the example for more details.

Use brilliant tool - race detector - for detecting and eliminating data races in your program. If you detected data race related to fasthttp in your program, then there is high probability you forgot calling TimeoutError before returning from RequestHandler.

Performance optimization tips for multi-core systems

  • Use reuseport listener.
  • Run a separate server instance per CPU core with GOMAXPROCS=1.
  • Pin each server instance to a separate CPU core using taskset.
  • Ensure the interrupts of multiqueue network card are evenly distributed between CPU cores. See this article for details.
  • Use Go 1.6 as it provides some considerable performance improvements.

Fasthttp best practices

  • Do not allocate objects and []byte buffers - just reuse them as much as possible. Fasthttp API design encourages this.
  • sync.Pool is your best friend.
  • Profile your program in production. go tool pprof --alloc_objects your-program mem.pprof usually gives better insights for optimization opportunities than go tool pprof your-program cpu.pprof.
  • Write tests and benchmarks for hot paths.
  • Avoid conversion between []byte and string, since this may result in memory allocation+copy. Fasthttp API provides functions for both []byte and string - use these functions instead of converting manually between []byte and string. There are some exceptions - see this wiki page for more details.
  • Verify your tests and production code under race detector on a regular basis.
  • Prefer quicktemplate instead of html/template in your webserver.

Tricks with []byte buffers

The following tricks are used by fasthttp. Use them in your code too.

  • Standard Go functions accept nil buffers
var (
	// both buffers are uninitialized
	dst []byte
	src []byte
)
dst = append(dst, src...)  // is legal if dst is nil and/or src is nil
copy(dst, src)  // is legal if dst is nil and/or src is nil
(string(src) == "")  // is true if src is nil
(len(src) == 0)  // is true if src is nil
src = src[:0]  // works like a charm with nil src

// this for loop doesn't panic if src is nil
for i, ch := range src {
	doSomething(i, ch)
}

So throw away nil checks for []byte buffers from you code. For example,

srcLen := 0
if src != nil {
	srcLen = len(src)
}

becomes

srcLen := len(src)
  • String may be appended to []byte buffer with append
dst = append(dst, "foobar"...)
  • []byte buffer may be extended to its' capacity.
buf := make([]byte, 100)
a := buf[:10]  // len(a) == 10, cap(a) == 100.
b := a[:100]  // is valid, since cap(a) == 100.
  • All fasthttp functions accept nil []byte buffer
statusCode, body, err := fasthttp.Get(nil, "http://google.com/")
uintBuf := fasthttp.AppendUint(nil, 1234)
  • fasthttp-contrib - various useful helpers for projects based on fasthttp.
  • iris - web application framework built on top of fasthttp. Features speed and functionality.
  • fasthttp-routing - fast and powerful routing package for fasthttp servers.
  • fasthttprouter - a high performance fasthttp request router that scales well.
  • echo - fast and unfancy HTTP server framework with fasthttp support.
  • websocket - Gorilla-based websocket implementation for fasthttp.

FAQ

  • Why creating yet another http package instead of optimizing net/http?

    Because net/http API limits many optimization opportunities. For example:

    • net/http Request object lifetime isn't limited by request handler execution time. So the server must create new request object per each request instead of reusing existing objects like fasthttp do.
    • net/http headers are stored in a map[string][]string. So the server must parse all the headers, convert them from []byte to string and put them into the map before calling user-provided request handler. This all requires unnecessary memory allocations avoided by fasthttp.
    • net/http client API requires creating new response object per each request.
  • Why fasthttp API is incompatible with net/http?

    Because net/http API limits many optimization opportunities. See the answer above for more details. Also certain net/http API parts are suboptimal for use:

  • Why fasthttp doesn't support HTTP/2.0 and WebSockets?

    There are plans for adding HTTP/2.0 and WebSockets support in the future. In the mean time, third parties may use RequestCtx.Hijack for implementing these goodies. See the first third-party websocket implementation on the top of fasthttp.

  • Are there known net/http advantages comparing to fasthttp?

    Yes:

    • net/http supports HTTP/2.0 starting from go1.6.
    • net/http API is stable, while fasthttp API constantly evolves.
    • net/http handles more HTTP corner cases.
    • net/http should contain less bugs, since it is used and tested by much wider audience.
    • net/http works on Go older than 1.5.
  • Why fasthttp API prefers returning []byte instead of string?

    Because []byte to string conversion isn't free - it requires memory allocation and copy. Feel free wrapping returned []byte result into string() if you prefer working with strings instead of byte slices. But be aware that this has non-zero overhead.

  • Which GO versions are supported by fasthttp?

    Go1.5+. Older versions won't be supported, since their standard package miss useful functions.

  • Please provide real benchmark data and sever information

    See this issue.

  • Are there plans to add request routing to fasthttp?

    There are no plans to add request routing into fasthttp. Use third-party routers and web frameworks with fasthttp support:

    See also this issue for more info.

  • I detected data race in fasthttp!

    Cool! File a bug. But before doing this check the following in your code:

  • I didn't find an answer for my question here

    Try exploring these questions.

Documentation

Overview

Package fasthttp provides fast HTTP server and client API.

Fasthttp provides the following features:

* Optimized for speed. Easily handles more than 100K qps and more than 1M
  concurrent keep-alive connections on modern hardware.
* Optimized for low memory usage.
* Easy 'Connection: Upgrade' support via RequestCtx.Hijack.
* Server supports requests' pipelining. Multiple requests may be read from
  a single network packet and multiple responses may be sent in a single
  network packet. This may be useful for highly loaded REST services.
* Server provides the following anti-DoS limits:

    * The number of concurrent connections.
    * The number of concurrent connections per client IP.
    * The number of requests per connection.
    * Request read timeout.
    * Response write timeout.
    * Maximum request header size.
    * Maximum request body size.
    * Maximum request execution time.
    * Maximum keep-alive connection lifetime.
    * Early filtering out non-GET requests.

* A lot of additional useful info is exposed to request handler:

    * Server and client address.
    * Per-request logger.
    * Unique request id.
    * Request start time.
    * Connection start time.
    * Request sequence number for the current connection.

* Client supports automatic retry on idempotent requests' failure.
* Fasthttp API is designed with the ability to extend existing client
  and server implementations or to write custom client and server
  implementations from scratch.

Index

Constants

View Source
const (
	CompressNoCompression      = flate.NoCompression
	CompressBestSpeed          = flate.BestSpeed
	CompressBestCompression    = flate.BestCompression
	CompressDefaultCompression = flate.DefaultCompression
)

Supported compression levels.

View Source
const (
	StatusContinue           = 100
	StatusSwitchingProtocols = 101

	StatusOK                   = 200
	StatusCreated              = 201
	StatusAccepted             = 202
	StatusNonAuthoritativeInfo = 203
	StatusNoContent            = 204
	StatusResetContent         = 205
	StatusPartialContent       = 206

	StatusMultipleChoices   = 300
	StatusMovedPermanently  = 301
	StatusFound             = 302
	StatusSeeOther          = 303
	StatusNotModified       = 304
	StatusUseProxy          = 305
	StatusTemporaryRedirect = 307

	StatusBadRequest                   = 400
	StatusUnauthorized                 = 401
	StatusPaymentRequired              = 402
	StatusForbidden                    = 403
	StatusNotFound                     = 404
	StatusMethodNotAllowed             = 405
	StatusNotAcceptable                = 406
	StatusProxyAuthRequired            = 407
	StatusRequestTimeout               = 408
	StatusConflict                     = 409
	StatusGone                         = 410
	StatusLengthRequired               = 411
	StatusPreconditionFailed           = 412
	StatusRequestEntityTooLarge        = 413
	StatusRequestURITooLong            = 414
	StatusUnsupportedMediaType         = 415
	StatusRequestedRangeNotSatisfiable = 416
	StatusExpectationFailed            = 417
	StatusTeapot                       = 418
	StatusPreconditionRequired         = 428
	StatusTooManyRequests              = 429
	StatusRequestHeaderFieldsTooLarge  = 431

	StatusInternalServerError           = 500
	StatusNotImplemented                = 501
	StatusBadGateway                    = 502
	StatusServiceUnavailable            = 503
	StatusGatewayTimeout                = 504
	StatusHTTPVersionNotSupported       = 505
	StatusNetworkAuthenticationRequired = 511
)

HTTP status codes were stolen from net/http.

View Source
const DefaultConcurrency = 256 * 1024

DefaultConcurrency is the maximum number of concurrent connections the Server may serve by default (i.e. if Server.Concurrency isn't set).

View Source
const DefaultDNSCacheDuration = time.Minute

DefaultDNSCacheDuration is the duration for caching resolved TCP addresses by Dial* functions.

View Source
const DefaultDialTimeout = 3 * time.Second

DefaultDialTimeout is timeout used by Dial and DialDualStack for establishing TCP connections.

View Source
const DefaultMaxConnsPerHost = 512

DefaultMaxConnsPerHost is the maximum number of concurrent connections http client may establish per host by default (i.e. if Client.MaxConnsPerHost isn't set).

View Source
const DefaultMaxIdleConnDuration = 10 * time.Second

DefaultMaxIdleConnDuration is the default duration before idle keep-alive connection is closed.

View Source
const DefaultMaxPendingRequests = 1024

DefaultMaxPendingRequests is the default value for PipelineClient.MaxPendingRequests.

View Source
const FSCompressedFileSuffix = ".fasthttp.gz"

FSCompressedFileSuffix is the suffix FS adds to the original file names when trying to store compressed file under the new file name. See FS.Compress for details.

View Source
const FSHandlerCacheDuration = 10 * time.Second

FSHandlerCacheDuration is the default expiration duration for inactive file handlers opened by FS.

Variables

View Source
var (
	// ErrNoFreeConns is returned when no free connections available
	// to the given host.
	ErrNoFreeConns = errors.New("no free connections available to host")

	// ErrTimeout is returned from timed out calls.
	ErrTimeout = errors.New("timeout")

	// ErrConnectionClosed may be returned from client methods if the server
	// closes connection before returning the first response byte.
	//
	// If you see this error, then either fix the server by returning
	// 'Connection: close' response header before closing the connection
	// or add 'Connection: close' request header before sending requests
	// to broken server.
	ErrConnectionClosed = errors.New("the server closed connection before returning the first response byte. " +
		"Make sure the server returns 'Connection: close' response header before closing the connection")
)
View Source
var (
	// CookieExpireDelete may be set on Cookie.Expire for expiring the given cookie.
	CookieExpireDelete = time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC)

	// CookieExpireUnlimited indicates that the cookie doesn't expire.
	CookieExpireUnlimited = zeroTime
)
View Source
var (
	// ErrPerIPConnLimit may be returned from ServeConn if the number of connections
	// per ip exceeds Server.MaxConnsPerIP.
	ErrPerIPConnLimit = errors.New("too many connections per ip")

	// ErrConcurrencyLimit may be returned from ServeConn if the number
	// of concurrenty served connections exceeds Server.Concurrency.
	ErrConcurrencyLimit = errors.New("canot serve the connection because Server.Concurrency concurrent connections are served")

	// ErrKeepaliveTimeout is returned from ServeConn
	// if the connection lifetime exceeds MaxKeepaliveDuration.
	ErrKeepaliveTimeout = errors.New("exceeded MaxKeepaliveDuration")
)
View Source
var ErrBodyTooLarge = errors.New("body size exceeds the given limit")

ErrBodyTooLarge is returned if either request or response body exceeds the given limit.

View Source
var ErrDialTimeout = errors.New("dialing to the given TCP address timed out")

ErrDialTimeout is returned when TCP dialing is timed out.

View Source
var ErrMissingFile = errors.New("there is no uploaded file associated with the given key")

ErrMissingFile may be returned from FormFile when the is no uploaded file associated with the given multipart form key.

View Source
var ErrNoArgValue = errors.New("no Args value for the given key")

ErrNoArgValue is returned when Args value with the given key is missing.

View Source
var ErrNoMultipartForm = errors.New("request has no multipart/form-data Content-Type")

ErrNoMultipartForm means that the request's Content-Type isn't 'multipart/form-data'.

View Source
var ErrPipelineOverflow = errors.New("pipelined requests' queue has been overflown. Increase MaxPendingRequests")

ErrPipelineOverflow may be returned from PipelineClient.Do if the requests' queue is overflown.

Functions

func AppendBytesStr

func AppendBytesStr(dst []byte, src string) []byte

AppendBytesStr appends src to dst and returns the extended dst.

This function has no performance benefits comparing to append(dst, src...). It is left here for backwards compatibility only.

This function is deprecated and may be deleted soon.

func AppendGunzipBytes

func AppendGunzipBytes(dst, src []byte) ([]byte, error)

AppendGunzipBytes append gunzipped src to dst and returns the resulting dst.

func AppendGzipBytes

func AppendGzipBytes(dst, src []byte) []byte

AppendGzipBytes appends gzipped src to dst and returns the resulting dst.

func AppendGzipBytesLevel

func AppendGzipBytesLevel(dst, src []byte, level int) []byte

AppendGzipBytesLevel appends gzipped src to dst using the given compression level and returns the resulting dst.

Supported compression levels are:

* CompressNoCompression
* CompressBestSpeed
* CompressBestCompression
* CompressDefaultCompression

func AppendHTMLEscape

func AppendHTMLEscape(dst []byte, s string) []byte

AppendHTMLEscape appends html-escaped s to dst and returns the extended dst.

func AppendHTMLEscapeBytes

func AppendHTMLEscapeBytes(dst, s []byte) []byte

AppendHTMLEscapeBytes appends html-escaped s to dst and returns the extended dst.

func AppendHTTPDate

func AppendHTTPDate(dst []byte, date time.Time) []byte

AppendHTTPDate appends HTTP-compliant (RFC1123) representation of date to dst and returns the extended dst.

func AppendIPv4

func AppendIPv4(dst []byte, ip net.IP) []byte

AppendIPv4 appends string representation of the given ip v4 to dst and returns the extended dst.

func AppendNormalizedHeaderKey

func AppendNormalizedHeaderKey(dst []byte, key string) []byte

AppendNormalizedHeaderKey appends normalized header key (name) to dst and returns the resulting dst.

Normalized header key starts with uppercase letter. The first letters after dashes are also uppercased. All the other letters are lowercased. Examples:

* coNTENT-TYPe -> Content-Type
* HOST -> Host
* foo-bar-baz -> Foo-Bar-Baz

func AppendNormalizedHeaderKeyBytes

func AppendNormalizedHeaderKeyBytes(dst, key []byte) []byte

AppendNormalizedHeaderKeyBytes appends normalized header key (name) to dst and returns the resulting dst.

Normalized header key starts with uppercase letter. The first letters after dashes are also uppercased. All the other letters are lowercased. Examples:

* coNTENT-TYPe -> Content-Type
* HOST -> Host
* foo-bar-baz -> Foo-Bar-Baz

func AppendQuotedArg

func AppendQuotedArg(dst, src []byte) []byte

AppendQuotedArg appends url-encoded src to dst and returns appended dst.

func AppendUint

func AppendUint(dst []byte, n int) []byte

AppendUint appends n to dst and returns the extended dst.

func Dial

func Dial(addr string) (net.Conn, error)

Dial dials the given TCP addr using tcp4.

This function has the following additional features comparing to net.Dial:

* It reduces load on DNS resolver by caching resolved TCP addressed
  for DefaultDNSCacheDuration.
* It dials all the resolved TCP addresses in round-robin manner until
  connection is established. This may be useful if certain addresses
  are temporarily unreachable.
* It returns ErrDialTimeout if connection cannot be established during
  DefaultDialTimeout seconds. Use DialTimeout for customizing dial timeout.

This dialer is intended for custom code wrapping before passing to Client.Dial or HostClient.Dial.

For instance, per-host counters and/or limits may be implemented by such wrappers.

The addr passed to the function must contain port. Example addr values:

* foobar.baz:443
* foo.bar:80
* aaa.com:8080

func DialDualStack

func DialDualStack(addr string) (net.Conn, error)

DialDualStack dials the given TCP addr using both tcp4 and tcp6.

This function has the following additional features comparing to net.Dial:

* It reduces load on DNS resolver by caching resolved TCP addressed
  for DefaultDNSCacheDuration.
* It dials all the resolved TCP addresses in round-robin manner until
  connection is established. This may be useful if certain addresses
  are temporarily unreachable.
* It returns ErrDialTimeout if connection cannot be established during
  DefaultDialTimeout seconds. Use DialDualStackTimeout for custom dial
  timeout.

This dialer is intended for custom code wrapping before passing to Client.Dial or HostClient.Dial.

For instance, per-host counters and/or limits may be implemented by such wrappers.

The addr passed to the function must contain port. Example addr values:

* foobar.baz:443
* foo.bar:80
* aaa.com:8080

func DialDualStackTimeout

func DialDualStackTimeout(addr string, timeout time.Duration) (net.Conn, error)

DialDualStackTimeout dials the given TCP addr using both tcp4 and tcp6 using the given timeout.

This function has the following additional features comparing to net.Dial:

* It reduces load on DNS resolver by caching resolved TCP addressed
  for DefaultDNSCacheDuration.
* It dials all the resolved TCP addresses in round-robin manner until
  connection is established. This may be useful if certain addresses
  are temporarily unreachable.

This dialer is intended for custom code wrapping before passing to Client.Dial or HostClient.Dial.

For instance, per-host counters and/or limits may be implemented by such wrappers.

The addr passed to the function must contain port. Example addr values:

* foobar.baz:443
* foo.bar:80
* aaa.com:8080

func DialTimeout

func DialTimeout(addr string, timeout time.Duration) (net.Conn, error)

DialTimeout dials the given TCP addr using tcp4 using the given timeout.

This function has the following additional features comparing to net.Dial:

* It reduces load on DNS resolver by caching resolved TCP addressed
  for DefaultDNSCacheDuration.
* It dials all the resolved TCP addresses in round-robin manner until
  connection is established. This may be useful if certain addresses
  are temporarily unreachable.

This dialer is intended for custom code wrapping before passing to Client.Dial or HostClient.Dial.

For instance, per-host counters and/or limits may be implemented by such wrappers.

The addr passed to the function must contain port. Example addr values:

* foobar.baz:443
* foo.bar:80
* aaa.com:8080

func Do

func Do(req *Request, resp *Response) error

Do performs the given http request and fills the given http response.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

ErrNoFreeConns is returned if all DefaultMaxConnsPerHost connections to the requested host are busy.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func DoDeadline

func DoDeadline(req *Request, resp *Response, deadline time.Time) error

DoDeadline performs the given request and waits for response until the given deadline.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned until the given deadline.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func DoTimeout

func DoTimeout(req *Request, resp *Response, timeout time.Duration) error

DoTimeout performs the given request and waits for response during the given timeout duration.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned during the given timeout.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func EqualBytesStr

func EqualBytesStr(b []byte, s string) bool

EqualBytesStr returns true if string(b) == s.

This function has no performance benefits comparing to string(b) == s. It is left here for backwards compatibility only.

This function is deperecated and may be deleted soon.

func FileLastModified

func FileLastModified(path string) (time.Time, error)

FileLastModified returns last modified time for the file.

func Get

func Get(dst []byte, url string) (statusCode int, body []byte, err error)

Get appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

func GetDeadline

func GetDeadline(dst []byte, url string, deadline time.Time) (statusCode int, body []byte, err error)

GetDeadline appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched until the given deadline.

func GetTimeout

func GetTimeout(dst []byte, url string, timeout time.Duration) (statusCode int, body []byte, err error)

GetTimeout appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched during the given timeout.

func ListenAndServe

func ListenAndServe(addr string, handler RequestHandler) error

ListenAndServe serves HTTP requests from the given TCP addr using the given handler.

func ListenAndServeTLS

func ListenAndServeTLS(addr, certFile, keyFile string, handler RequestHandler) error

ListenAndServeTLS serves HTTPS requests from the given TCP addr using the given handler.

certFile and keyFile are paths to TLS certificate and key files.

func ListenAndServeTLSEmbed

func ListenAndServeTLSEmbed(addr string, certData, keyData []byte, handler RequestHandler) error

ListenAndServeTLSEmbed serves HTTPS requests from the given TCP addr using the given handler.

certData and keyData must contain valid TLS certificate and key data.

func ListenAndServeUNIX

func ListenAndServeUNIX(addr string, mode os.FileMode, handler RequestHandler) error

ListenAndServeUNIX serves HTTP requests from the given UNIX addr using the given handler.

The function deletes existing file at addr before starting serving.

The server sets the given file mode for the UNIX addr.

func NewStreamReader

func NewStreamReader(sw StreamWriter) io.ReadCloser

NewStreamReader returns a reader, which replays all the data generated by sw.

The returned reader may be passed to Response.SetBodyStream.

Close must be called on the returned reader after all the required data has been read. Otherwise goroutine leak may occur.

See also Response.SetBodyStreamWriter.

func ParseByteRange

func ParseByteRange(byteRange []byte, contentLength int) (startPos, endPos int, err error)

ParseByteRange parses 'Range: bytes=...' header value.

It follows https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35 .

func ParseHTTPDate

func ParseHTTPDate(date []byte) (time.Time, error)

ParseHTTPDate parses HTTP-compliant (RFC1123) date.

func ParseIPv4

func ParseIPv4(dst net.IP, ipStr []byte) (net.IP, error)

ParseIPv4 parses ip address from ipStr into dst and returns the extended dst.

func ParseUfloat

func ParseUfloat(buf []byte) (float64, error)

ParseUfloat parses unsigned float from buf.

func ParseUint

func ParseUint(buf []byte) (int, error)

ParseUint parses uint from buf.

func Post

func Post(dst []byte, url string, postArgs *Args) (statusCode int, body []byte, err error)

Post sends POST request to the given url with the given POST arguments.

Response body is appended to dst, which is returned as body.

New body buffer is allocated if dst is nil.

Empty POST body is sent if postArgs is nil.

func ReleaseArgs

func ReleaseArgs(a *Args)

ReleaseArgs returns the object acquired via AquireArgs to the pool.

Do not access the released Args object, otherwise data races may occur.

func ReleaseByteBuffer

func ReleaseByteBuffer(b *ByteBuffer)

ReleaseByteBuffer returns byte buffer to the pool.

ByteBuffer.B mustn't be touched after returning it to the pool. Otherwise data races occur.

func ReleaseCookie

func ReleaseCookie(c *Cookie)

ReleaseCookie returns the Cookie object acquired with AcquireCookie back to the pool.

Do not access released Cookie object, otherwise data races may occur.

func ReleaseRequest

func ReleaseRequest(req *Request)

ReleaseRequest returns req acquired via AcquireRequest to request pool.

It is forbidden accessing req and/or its' members after returning it to request pool.

func ReleaseResponse

func ReleaseResponse(resp *Response)

ReleaseResponse return resp acquired via AcquireResponse to response pool.

It is forbidden accessing resp and/or its' members after returning it to response pool.

func ReleaseURI

func ReleaseURI(u *URI)

ReleaseURI releases the URI acquired via AcquireURI.

The released URI mustn't be used after releasing it, otherwise data races may occur.

func SaveMultipartFile

func SaveMultipartFile(fh *multipart.FileHeader, path string) error

SaveMultipartFile saves multipart file fh under the given filename path.

func Serve

func Serve(ln net.Listener, handler RequestHandler) error

Serve serves incoming connections from the given listener using the given handler.

Serve blocks until the given listener returns permanent error.

func ServeConn

func ServeConn(c net.Conn, handler RequestHandler) error

ServeConn serves HTTP requests from the given connection using the given handler.

ServeConn returns nil if all requests from the c are successfully served. It returns non-nil error otherwise.

Connection c must immediately propagate all the data passed to Write() to the client. Otherwise requests' processing may hang.

ServeConn closes c before returning.

func ServeFile

func ServeFile(ctx *RequestCtx, path string)

ServeFile returns HTTP response containing compressed file contents from the given path.

HTTP response may contain uncompressed file contents in the following cases:

* Missing 'Accept-Encoding: gzip' request header.
* No write access to directory containing the file.

Directory contents is returned if path points to directory.

Use ServeFileUncompressed is you don't need serving compressed file contents.

See also RequestCtx.SendFile.

func ServeFileBytes

func ServeFileBytes(ctx *RequestCtx, path []byte)

ServeFileBytes returns HTTP response containing compressed file contents from the given path.

HTTP response may contain uncompressed file contents in the following cases:

* Missing 'Accept-Encoding: gzip' request header.
* No write access to directory containing the file.

Directory contents is returned if path points to directory.

Use ServeFileBytesUncompressed is you don't need serving compressed file contents.

See also RequestCtx.SendFileBytes.

func ServeFileBytesUncompressed

func ServeFileBytesUncompressed(ctx *RequestCtx, path []byte)

ServeFileBytesUncompressed returns HTTP response containing file contents from the given path.

Directory contents is returned if path points to directory.

ServeFileBytes may be used for saving network traffic when serving files with good compression ratio.

See also RequestCtx.SendFileBytes.

func ServeFileUncompressed

func ServeFileUncompressed(ctx *RequestCtx, path string)

ServeFileUncompressed returns HTTP response containing file contents from the given path.

Directory contents is returned if path points to directory.

ServeFile may be used for saving network traffic when serving files with good compression ratio.

See also RequestCtx.SendFile.

func ServeTLS

func ServeTLS(ln net.Listener, certFile, keyFile string, handler RequestHandler) error

ServeTLS serves HTTPS requests from the given net.Listener using the given handler.

certFile and keyFile are paths to TLS certificate and key files.

func ServeTLSEmbed

func ServeTLSEmbed(ln net.Listener, certData, keyData []byte, handler RequestHandler) error

ServeTLSEmbed serves HTTPS requests from the given net.Listener using the given handler.

certData and keyData must contain valid TLS certificate and key data.

func StatusMessage

func StatusMessage(statusCode int) string

StatusMessage returns HTTP status message for the given status code.

func WriteGunzip

func WriteGunzip(w io.Writer, p []byte) (int, error)

WriteGunzip writes ungzipped p to w and returns the number of uncompressed bytes written to w.

func WriteGzip

func WriteGzip(w io.Writer, p []byte) (int, error)

WriteGzip writes gzipped p to w and returns the number of compressed bytes written to w.

func WriteGzipLevel

func WriteGzipLevel(w io.Writer, p []byte, level int) (int, error)

WriteGzipLevel writes gzipped p to w using the given compression level and returns the number of compressed bytes written to w.

Supported compression levels are:

* CompressNoCompression
* CompressBestSpeed
* CompressBestCompression
* CompressDefaultCompression

func WriteInflate

func WriteInflate(w io.Writer, p []byte) (int, error)

WriteInflate writes inflated p to w and returns the number of uncompressed bytes written to w.

func WriteMultipartForm

func WriteMultipartForm(w io.Writer, f *multipart.Form, boundary string) error

WriteMultipartForm writes the given multipart form f with the given boundary to w.

Types

type Args

type Args struct {
	// contains filtered or unexported fields
}

Args represents query arguments.

It is forbidden copying Args instances. Create new instances instead and use CopyTo().

Args instance MUST NOT be used from concurrently running goroutines.

func AcquireArgs

func AcquireArgs() *Args

AcquireArgs returns an empty Args object from the pool.

The returned Args may be returned to the pool with ReleaseArgs when no longer needed. This allows reducing GC load.

func (*Args) Add

func (a *Args) Add(key, value string)

Add adds 'key=value' argument.

Multiple values for the same key may be added.

func (*Args) AddBytesK

func (a *Args) AddBytesK(key []byte, value string)

AddBytesK adds 'key=value' argument.

Multiple values for the same key may be added.

func (*Args) AddBytesKV

func (a *Args) AddBytesKV(key, value []byte)

AddBytesKV adds 'key=value' argument.

Multiple values for the same key may be added.

func (*Args) AddBytesV

func (a *Args) AddBytesV(key string, value []byte)

AddBytesV adds 'key=value' argument.

Multiple values for the same key may be added.

func (*Args) AppendBytes

func (a *Args) AppendBytes(dst []byte) []byte

AppendBytes appends query string to dst and returns the extended dst.

func (*Args) CopyTo

func (a *Args) CopyTo(dst *Args)

CopyTo copies all args to dst.

func (*Args) Del

func (a *Args) Del(key string)

Del deletes argument with the given key from query args.

func (*Args) DelBytes

func (a *Args) DelBytes(key []byte)

DelBytes deletes argument with the given key from query args.

func (*Args) GetUfloat

func (a *Args) GetUfloat(key string) (float64, error)

GetUfloat returns ufloat value for the given key.

func (*Args) GetUfloatOrZero

func (a *Args) GetUfloatOrZero(key string) float64

GetUfloatOrZero returns ufloat value for the given key.

Zero (0) is returned on error.

func (*Args) GetUint

func (a *Args) GetUint(key string) (int, error)

GetUint returns uint value for the given key.

func (*Args) GetUintOrZero

func (a *Args) GetUintOrZero(key string) int

GetUintOrZero returns uint value for the given key.

Zero (0) is returned on error.

func (*Args) Has

func (a *Args) Has(key string) bool

Has returns true if the given key exists in Args.

func (*Args) HasBytes

func (a *Args) HasBytes(key []byte) bool

HasBytes returns true if the given key exists in Args.

func (*Args) Len

func (a *Args) Len() int

Len returns the number of query args.

func (*Args) Parse

func (a *Args) Parse(s string)

Parse parses the given string containing query args.

func (*Args) ParseBytes

func (a *Args) ParseBytes(b []byte)

ParseBytes parses the given b containing query args.

func (*Args) Peek

func (a *Args) Peek(key string) []byte

Peek returns query arg value for the given key.

Returned value is valid until the next Args call.

func (*Args) PeekBytes

func (a *Args) PeekBytes(key []byte) []byte

PeekBytes returns query arg value for the given key.

Returned value is valid until the next Args call.

func (*Args) PeekMulti

func (a *Args) PeekMulti(key string) [][]byte

PeekMulti returns all the arg values for the given key.

func (*Args) PeekMultiBytes

func (a *Args) PeekMultiBytes(key []byte) [][]byte

PeekMultiBytes returns all the arg values for the given key.

func (*Args) QueryString

func (a *Args) QueryString() []byte

QueryString returns query string for the args.

The returned value is valid until the next call to Args methods.

func (*Args) Reset

func (a *Args) Reset()

Reset clears query args.

func (*Args) Set

func (a *Args) Set(key, value string)

Set sets 'key=value' argument.

func (*Args) SetBytesK

func (a *Args) SetBytesK(key []byte, value string)

SetBytesK sets 'key=value' argument.

func (*Args) SetBytesKV

func (a *Args) SetBytesKV(key, value []byte)

SetBytesKV sets 'key=value' argument.

func (*Args) SetBytesV

func (a *Args) SetBytesV(key string, value []byte)

SetBytesV sets 'key=value' argument.

func (*Args) SetUint

func (a *Args) SetUint(key string, value int)

SetUint sets uint value for the given key.

func (*Args) SetUintBytes

func (a *Args) SetUintBytes(key []byte, value int)

SetUintBytes sets uint value for the given key.

func (*Args) String

func (a *Args) String() string

String returns string representation of query args.

func (*Args) VisitAll

func (a *Args) VisitAll(f func(key, value []byte))

VisitAll calls f for each existing arg.

f must not retain references to key and value after returning. Make key and/or value copies if you need storing them after returning.

func (*Args) WriteTo

func (a *Args) WriteTo(w io.Writer) (int64, error)

WriteTo writes query string to w.

WriteTo implements io.WriterTo interface.

type ByteBuffer

type ByteBuffer struct {

	// B is a byte buffer to use in append-like workloads.
	// See example code for details.
	B []byte
}

ByteBuffer provides byte buffer, which can be used with fasthttp API in order to minimize memory allocations.

ByteBuffer may be used with functions appending data to the given []byte slice. See example code for details.

Use AcquireByteBuffer for obtaining an empty byte buffer.

func AcquireByteBuffer

func AcquireByteBuffer() *ByteBuffer

AcquireByteBuffer returns an empty byte buffer from the pool.

Acquired byte buffer may be returned to the pool via ReleaseByteBuffer call. This reduces the number of memory allocations required for byte buffer management.

func (*ByteBuffer) Reset

func (b *ByteBuffer) Reset()

Reset makes ByteBuffer.B empty.

func (*ByteBuffer) Set

func (b *ByteBuffer) Set(p []byte)

Set sets ByteBuffer.B to p

func (*ByteBuffer) SetString

func (b *ByteBuffer) SetString(s string)

SetString sets ByteBuffer.B to s

func (*ByteBuffer) Write

func (b *ByteBuffer) Write(p []byte) (int, error)

Write implements io.Writer - it appends p to ByteBuffer.B

func (*ByteBuffer) WriteString

func (b *ByteBuffer) WriteString(s string) (int, error)

WriteString appends s to ByteBuffer.B

type Client

type Client struct {

	// Client name. Used in User-Agent request header.
	//
	// Default client name is used if not set.
	Name string

	// Callback for establishing new connections to hosts.
	//
	// Default Dial is used if not set.
	Dial DialFunc

	// Attempt to connect to both ipv4 and ipv6 addresses if set to true.
	//
	// This option is used only if default TCP dialer is used,
	// i.e. if Dial is blank.
	//
	// By default client connects only to ipv4 addresses,
	// since unfortunately ipv6 remains broken in many networks worldwide :)
	DialDualStack bool

	// TLS config for https connections.
	//
	// Default TLS config is used if not set.
	TLSConfig *tls.Config

	// Maximum number of connections per each host which may be established.
	//
	// DefaultMaxConnsPerHost is used if not set.
	MaxConnsPerHost int

	// Idle keep-alive connections are closed after this duration.
	//
	// By default idle connections are closed
	// after DefaultMaxIdleConnDuration.
	MaxIdleConnDuration time.Duration

	// Per-connection buffer size for responses' reading.
	// This also limits the maximum header size.
	//
	// Default buffer size is used if 0.
	ReadBufferSize int

	// Per-connection buffer size for requests' writing.
	//
	// Default buffer size is used if 0.
	WriteBufferSize int

	// Maximum duration for full response reading (including body).
	//
	// By default response read timeout is unlimited.
	ReadTimeout time.Duration

	// Maximum duration for full request writing (including body).
	//
	// By default request write timeout is unlimited.
	WriteTimeout time.Duration

	// Maximum response body size.
	//
	// The client returns ErrBodyTooLarge if this limit is greater than 0
	// and response body is greater than the limit.
	//
	// By default response body size is unlimited.
	MaxResponseBodySize int

	// Header names are passed as-is without normalization
	// if this option is set.
	//
	// Disabled header names' normalization may be useful only for proxying
	// responses to other clients expecting case-sensitive
	// header names. See https://github.com/valyala/fasthttp/issues/57
	// for details.
	//
	// By default request and response header names are normalized, i.e.
	// The first letter and the first letters following dashes
	// are uppercased, while all the other letters are lowercased.
	// Examples:
	//
	//     * HOST -> Host
	//     * content-type -> Content-Type
	//     * cONTENT-lenGTH -> Content-Length
	DisableHeaderNamesNormalizing bool
	// contains filtered or unexported fields
}

Client implements http client.

Copying Client by value is prohibited. Create new instance instead.

It is safe calling Client methods from concurrently running goroutines.

func (*Client) Do

func (c *Client) Do(req *Request, resp *Response) error

Do performs the given http request and fills the given http response.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

ErrNoFreeConns is returned if all Client.MaxConnsPerHost connections to the requested host are busy.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*Client) DoDeadline

func (c *Client) DoDeadline(req *Request, resp *Response, deadline time.Time) error

DoDeadline performs the given request and waits for response until the given deadline.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned until the given deadline.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*Client) DoTimeout

func (c *Client) DoTimeout(req *Request, resp *Response, timeout time.Duration) error

DoTimeout performs the given request and waits for response during the given timeout duration.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Client determines the server to be requested in the following order:

- from RequestURI if it contains full url with scheme and host;
- from Host header otherwise.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned during the given timeout.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*Client) Get

func (c *Client) Get(dst []byte, url string) (statusCode int, body []byte, err error)

Get appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

func (*Client) GetDeadline

func (c *Client) GetDeadline(dst []byte, url string, deadline time.Time) (statusCode int, body []byte, err error)

GetDeadline appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched until the given deadline.

func (*Client) GetTimeout

func (c *Client) GetTimeout(dst []byte, url string, timeout time.Duration) (statusCode int, body []byte, err error)

GetTimeout appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched during the given timeout.

func (*Client) Post

func (c *Client) Post(dst []byte, url string, postArgs *Args) (statusCode int, body []byte, err error)

Post sends POST request to the given url with the given POST arguments.

Response body is appended to dst, which is returned as body.

New body buffer is allocated if dst is nil.

Empty POST body is sent if postArgs is nil.

type Cookie struct {
	// contains filtered or unexported fields
}

Cookie represents HTTP response cookie.

Do not copy Cookie objects. Create new object and use CopyTo instead.

Cookie instance MUST NOT be used from concurrently running goroutines.

func AcquireCookie

func AcquireCookie() *Cookie

AcquireCookie returns an empty Cookie object from the pool.

The returned object may be returned back to the pool with ReleaseCookie. This allows reducing GC load.

func (*Cookie) AppendBytes

func (c *Cookie) AppendBytes(dst []byte) []byte

AppendBytes appends cookie representation to dst and returns the extended dst.

func (*Cookie) Cookie

func (c *Cookie) Cookie() []byte

Cookie returns cookie representation.

The returned value is valid until the next call to Cookie methods.

func (*Cookie) CopyTo

func (c *Cookie) CopyTo(src *Cookie)

CopyTo copies src cookie to c.

func (*Cookie) Domain

func (c *Cookie) Domain() []byte

Domain returns cookie domain.

The returned domain is valid until the next Cookie modification method call.

func (*Cookie) Expire

func (c *Cookie) Expire() time.Time

Expire returns cookie expiration time.

CookieExpireUnlimited is returned if cookie doesn't expire

func (*Cookie) HTTPOnly

func (c *Cookie) HTTPOnly() bool

HTTPOnly returns true if the cookie is http only.

func (*Cookie) Key

func (c *Cookie) Key() []byte

Key returns cookie name.

The returned value is valid until the next Cookie modification method call.

func (*Cookie) Parse

func (c *Cookie) Parse(src string) error

Parse parses Set-Cookie header.

func (*Cookie) ParseBytes

func (c *Cookie) ParseBytes(src []byte) error

ParseBytes parses Set-Cookie header.

func (*Cookie) Path

func (c *Cookie) Path() []byte

Path returns cookie path.

func (*Cookie) Reset

func (c *Cookie) Reset()

Reset clears the cookie.

func (*Cookie) Secure

func (c *Cookie) Secure() bool

Secure returns true if the cookie is secure.

func (*Cookie) SetDomain

func (c *Cookie) SetDomain(domain string)

SetDomain sets cookie domain.

func (*Cookie) SetDomainBytes

func (c *Cookie) SetDomainBytes(domain []byte)

SetDomainBytes sets cookie domain.

func (*Cookie) SetExpire

func (c *Cookie) SetExpire(expire time.Time)

SetExpire sets cookie expiration time.

Set expiration time to CookieExpireDelete for expiring (deleting) the cookie on the client.

By default cookie lifetime is limited by browser session.

func (*Cookie) SetHTTPOnly

func (c *Cookie) SetHTTPOnly(httpOnly bool)

SetHTTPOnly sets cookie's httpOnly flag to the given value.

func (*Cookie) SetKey

func (c *Cookie) SetKey(key string)

SetKey sets cookie name.

func (*Cookie) SetKeyBytes

func (c *Cookie) SetKeyBytes(key []byte)

SetKeyBytes sets cookie name.

func (*Cookie) SetPath

func (c *Cookie) SetPath(path string)

SetPath sets cookie path.

func (*Cookie) SetPathBytes

func (c *Cookie) SetPathBytes(path []byte)

SetPathBytes sets cookie path.

func (*Cookie) SetSecure

func (c *Cookie) SetSecure(secure bool)

SetSecure sets cookie's secure flag to the given value.

func (*Cookie) SetValue

func (c *Cookie) SetValue(value string)

SetValue sets cookie value.

func (*Cookie) SetValueBytes

func (c *Cookie) SetValueBytes(value []byte)

SetValueBytes sets cookie value.

func (*Cookie) String

func (c *Cookie) String() string

String returns cookie representation.

func (*Cookie) Value

func (c *Cookie) Value() []byte

Value returns cookie value.

The returned value is valid until the next Cookie modification method call.

func (*Cookie) WriteTo

func (c *Cookie) WriteTo(w io.Writer) (int64, error)

WriteTo writes cookie representation to w.

WriteTo implements io.WriterTo interface.

type DialFunc

type DialFunc func(addr string) (net.Conn, error)

DialFunc must establish connection to addr.

There is no need in establishing TLS (SSL) connection for https. The client automatically converts connection to TLS if HostClient.IsTLS is set.

TCP address passed to DialFunc always contains host and port. Example TCP addr values:

- foobar.com:80
- foobar.com:443
- foobar.com:8080

type FS

type FS struct {

	// Path to the root directory to serve files from.
	Root string

	// List of index file names to try opening during directory access.
	//
	// For example:
	//
	//     * index.html
	//     * index.htm
	//     * my-super-index.xml
	//
	// By default the list is empty.
	IndexNames []string

	// Index pages for directories without files matching IndexNames
	// are automatically generated if set.
	//
	// Directory index generation may be quite slow for directories
	// with many files (more than 1K), so it is discouraged enabling
	// index pages' generation for such directories.
	//
	// By default index pages aren't generated.
	GenerateIndexPages bool

	// Transparently compresses responses if set to true.
	//
	// The server tries minimizing CPU usage by caching compressed files.
	// It adds CompressedFileSuffix suffix to the original file name and
	// tries saving the resulting compressed file under the new file name.
	// So it is advisable to give the server write access to Root
	// and to all inner folders in order to minimze CPU usage when serving
	// compressed responses.
	//
	// Transparent compression is disabled by default.
	Compress bool

	// Enables byte range requests if set to true.
	//
	// Byte range requests are disabled by default.
	AcceptByteRange bool

	// Path rewriting function.
	//
	// By default request path is not modified.
	PathRewrite PathRewriteFunc

	// Expiration duration for inactive file handlers.
	//
	// FSHandlerCacheDuration is used by default.
	CacheDuration time.Duration

	// Suffix to add to the name of cached compressed file.
	//
	// This value has sense only if Compress is set.
	//
	// FSCompressedFileSuffix is used by default.
	CompressedFileSuffix string
	// contains filtered or unexported fields
}

FS represents settings for request handler serving static files from the local filesystem.

It is prohibited copying FS values. Create new values instead.

func (*FS) NewRequestHandler

func (fs *FS) NewRequestHandler() RequestHandler

NewRequestHandler returns new request handler with the given FS settings.

The returned handler caches requested file handles for FS.CacheDuration. Make sure your program has enough 'max open files' limit aka 'ulimit -n' if FS.Root folder contains many files.

Do not create multiple request handlers from a single FS instance - just reuse a single request handler.

type HijackHandler

type HijackHandler func(c net.Conn)

HijackHandler must process the hijacked connection c.

The connection c is automatically closed after returning from HijackHandler.

The connection c must not be used after returning from the handler.

type HostClient

type HostClient struct {

	// Comma-separated list of upstream HTTP server host addresses,
	// which are passed to Dial in round-robin manner.
	//
	// Each address may contain port if default dialer is used.
	// For example,
	//
	//    - foobar.com:80
	//    - foobar.com:443
	//    - foobar.com:8080
	Addr string

	// Client name. Used in User-Agent request header.
	Name string

	// Callback for establishing new connection to the host.
	//
	// Default Dial is used if not set.
	Dial DialFunc

	// Attempt to connect to both ipv4 and ipv6 host addresses
	// if set to true.
	//
	// This option is used only if default TCP dialer is used,
	// i.e. if Dial is blank.
	//
	// By default client connects only to ipv4 addresses,
	// since unfortunately ipv6 remains broken in many networks worldwide :)
	DialDualStack bool

	// Whether to use TLS (aka SSL or HTTPS) for host connections.
	IsTLS bool

	// Optional TLS config.
	TLSConfig *tls.Config

	// Maximum number of connections which may be established to all hosts
	// listed in Addr.
	//
	// DefaultMaxConnsPerHost is used if not set.
	MaxConns int

	// Keep-alive connections are closed after this duration.
	//
	// By default connection duration is unlimited.
	MaxConnDuration time.Duration

	// Idle keep-alive connections are closed after this duration.
	//
	// By default idle connections are closed
	// after DefaultMaxIdleConnDuration.
	MaxIdleConnDuration time.Duration

	// Per-connection buffer size for responses' reading.
	// This also limits the maximum header size.
	//
	// Default buffer size is used if 0.
	ReadBufferSize int

	// Per-connection buffer size for requests' writing.
	//
	// Default buffer size is used if 0.
	WriteBufferSize int

	// Maximum duration for full response reading (including body).
	//
	// By default response read timeout is unlimited.
	ReadTimeout time.Duration

	// Maximum duration for full request writing (including body).
	//
	// By default request write timeout is unlimited.
	WriteTimeout time.Duration

	// Maximum response body size.
	//
	// The client returns ErrBodyTooLarge if this limit is greater than 0
	// and response body is greater than the limit.
	//
	// By default response body size is unlimited.
	MaxResponseBodySize int

	// Header names are passed as-is without normalization
	// if this option is set.
	//
	// Disabled header names' normalization may be useful only for proxying
	// responses to other clients expecting case-sensitive
	// header names. See https://github.com/valyala/fasthttp/issues/57
	// for details.
	//
	// By default request and response header names are normalized, i.e.
	// The first letter and the first letters following dashes
	// are uppercased, while all the other letters are lowercased.
	// Examples:
	//
	//     * HOST -> Host
	//     * content-type -> Content-Type
	//     * cONTENT-lenGTH -> Content-Length
	DisableHeaderNamesNormalizing bool
	// contains filtered or unexported fields
}

HostClient balances http requests among hosts listed in Addr.

HostClient may be used for balancing load among multiple upstream hosts.

It is forbidden copying HostClient instances. Create new instances instead.

It is safe calling HostClient methods from concurrently running goroutines.

func (*HostClient) Do

func (c *HostClient) Do(req *Request, resp *Response) error

Do performs the given http request and sets the corresponding response.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrNoFreeConns is returned if all HostClient.MaxConns connections to the host are busy.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*HostClient) DoDeadline

func (c *HostClient) DoDeadline(req *Request, resp *Response, deadline time.Time) error

DoDeadline performs the given request and waits for response until the given deadline.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned until the given deadline.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*HostClient) DoTimeout

func (c *HostClient) DoTimeout(req *Request, resp *Response, timeout time.Duration) error

DoTimeout performs the given request and waits for response during the given timeout duration.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned during the given timeout.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*HostClient) Get

func (c *HostClient) Get(dst []byte, url string) (statusCode int, body []byte, err error)

Get appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

func (*HostClient) GetDeadline

func (c *HostClient) GetDeadline(dst []byte, url string, deadline time.Time) (statusCode int, body []byte, err error)

GetDeadline appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched until the given deadline.

func (*HostClient) GetTimeout

func (c *HostClient) GetTimeout(dst []byte, url string, timeout time.Duration) (statusCode int, body []byte, err error)

GetTimeout appends url contents to dst and returns it as body.

New body buffer is allocated if dst is nil.

ErrTimeout error is returned if url contents couldn't be fetched during the given timeout.

func (*HostClient) LastUseTime

func (c *HostClient) LastUseTime() time.Time

LastUseTime returns time the client was last used

func (*HostClient) Post

func (c *HostClient) Post(dst []byte, url string, postArgs *Args) (statusCode int, body []byte, err error)

Post sends POST request to the given url with the given POST arguments.

Response body is appended to dst, which is returned as body.

New body buffer is allocated if dst is nil.

Empty POST body is sent if postArgs is nil.

type Logger

type Logger interface {
	// Printf must have the same semantics as log.Printf.
	Printf(format string, args ...interface{})
}

Logger is used for logging formatted messages.

type PathRewriteFunc

type PathRewriteFunc func(ctx *RequestCtx) []byte

PathRewriteFunc must return new request path based on arbitrary ctx info such as ctx.Path().

Path rewriter is used in FS for translating the current request to the local filesystem path relative to FS.Root.

The returned path must not contain '/../' substrings due to security reasons, since such paths may refer files outside FS.Root.

The returned path may refer to ctx members. For example, ctx.Path().

func NewPathPrefixStripper

func NewPathPrefixStripper(prefixSize int) PathRewriteFunc

NewPathPrefixStripper returns path rewriter, which removes prefixSize bytes from the path prefix.

Examples:

* prefixSize = 0, original path: "/foo/bar", result: "/foo/bar"
* prefixSize = 3, original path: "/foo/bar", result: "o/bar"
* prefixSize = 7, original path: "/foo/bar", result: "r"

The returned path rewriter may be used as FS.PathRewrite .

func NewPathSlashesStripper

func NewPathSlashesStripper(slashesCount int) PathRewriteFunc

NewPathSlashesStripper returns path rewriter, which strips slashesCount leading slashes from the path.

Examples:

* slashesCount = 0, original path: "/foo/bar", result: "/foo/bar"
* slashesCount = 1, original path: "/foo/bar", result: "/bar"
* slashesCount = 2, original path: "/foo/bar", result: ""

The returned path rewriter may be used as FS.PathRewrite .

func NewVHostPathRewriter

func NewVHostPathRewriter(slashesCount int) PathRewriteFunc

NewVHostPathRewriter returns path rewriter, which strips slashesCount leading slashes from the path and prepends the path with request's host, thus simplifying virtual hosting for static files.

Examples:

* host=foobar.com, slashesCount=0, original path="/foo/bar".
  Resulting path: "/foobar.com/foo/bar"

* host=img.aaa.com, slashesCount=1, original path="/images/123/456.jpg"
  Resulting path: "/img.aaa.com/123/456.jpg"

type PipelineClient

type PipelineClient struct {

	// Address of the host to connect to.
	Addr string

	// The maximum number of pending pipelined requests to the server.
	//
	// DefaultMaxPendingRequests is used by default.
	MaxPendingRequests int

	// The maximum delay before sending pipelined requests as a batch
	// to the server.
	//
	// By default requests are sent immediately to the server.
	MaxBatchDelay time.Duration

	// Callback for connection establishing to the host.
	//
	// Default Dial is used if not set.
	Dial DialFunc

	// Attempt to connect to both ipv4 and ipv6 host addresses
	// if set to true.
	//
	// This option is used only if default TCP dialer is used,
	// i.e. if Dial is blank.
	//
	// By default client connects only to ipv4 addresses,
	// since unfortunately ipv6 remains broken in many networks worldwide :)
	DialDualStack bool

	// Whether to use TLS (aka SSL or HTTPS) for host connections.
	IsTLS bool

	// Optional TLS config.
	TLSConfig *tls.Config

	// Idle connection to the host is closed after this duration.
	//
	// By default idle connection is closed after
	// DefaultMaxIdleConnDuration.
	MaxIdleConnDuration time.Duration

	// Buffer size for responses' reading.
	// This also limits the maximum header size.
	//
	// Default buffer size is used if 0.
	ReadBufferSize int

	// Buffer size for requests' writing.
	//
	// Default buffer size is used if 0.
	WriteBufferSize int

	// Maximum duration for full response reading (including body).
	//
	// By default response read timeout is unlimited.
	ReadTimeout time.Duration

	// Maximum duration for full request writing (including body).
	//
	// By default request write timeout is unlimited.
	WriteTimeout time.Duration

	// Logger for logging client errors.
	//
	// By default standard logger from log package is used.
	Logger Logger
	// contains filtered or unexported fields
}

PipelineClient pipelines requests over a single connection to the given Addr.

This client may be used in highly loaded HTTP-based RPC systems for reducing context switches and network level overhead. See https://en.wikipedia.org/wiki/HTTP_pipelining for details.

It is forbidden copying PipelineClient instances. Create new instances instead.

It is safe calling PipelineClient methods from concurrently running goroutines.

func (*PipelineClient) Do

func (c *PipelineClient) Do(req *Request, resp *Response) error

Do performs the given http request and sets the corresponding response.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrNoFreeConns is returned if all HostClient.MaxConns connections to the host are busy.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*PipelineClient) DoDeadline

func (c *PipelineClient) DoDeadline(req *Request, resp *Response, deadline time.Time) error

DoDeadline performs the given request and waits for response until the given deadline.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned until the given deadline.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*PipelineClient) DoTimeout

func (c *PipelineClient) DoTimeout(req *Request, resp *Response, timeout time.Duration) error

DoTimeout performs the given request and waits for response during the given timeout duration.

Request must contain at least non-zero RequestURI with full url (including scheme and host) or non-zero Host header + RequestURI.

Response is ignored if resp is nil.

ErrTimeout is returned if the response wasn't returned during the given timeout.

It is recommended obtaining req and resp via AcquireRequest and AcquireResponse in performance-critical code.

func (*PipelineClient) PendingRequests

func (c *PipelineClient) PendingRequests() int

PendingRequests returns the current number of pending requests pipelined to the server.

This number may exceed MaxPendingRequests by up to two times, since the client may keep up to MaxPendingRequests requests in the queue before sending them to the server.

type Request

type Request struct {

	// Request header
	//
	// Copying Header by value is forbidden. Use pointer to Header instead.
	Header RequestHeader
	// contains filtered or unexported fields
}

Request represents HTTP request.

It is forbidden copying Request instances. Create new instances and use CopyTo instead.

Request instance MUST NOT be used from concurrently running goroutines.

func AcquireRequest

func AcquireRequest() *Request

AcquireRequest returns an empty Request instance from request pool.

The returned Request instance may be passed to ReleaseRequest when it is no longer needed. This allows Request recycling, reduces GC pressure and usually improves performance.

func (*Request) AppendBody

func (req *Request) AppendBody(p []byte)

AppendBody appends p to request body.

It is safe re-using p after the function returns.

func (*Request) AppendBodyString

func (req *Request) AppendBodyString(s string)

AppendBodyString appends s to request body.

func (*Request) Body

func (req *Request) Body() []byte

Body returns request body.

func (*Request) BodyGunzip

func (req *Request) BodyGunzip() ([]byte, error)

BodyGunzip returns un-gzipped body data.

This method may be used if the request header contains 'Content-Encoding: gzip' for reading un-gzipped body. Use Body for reading gzipped request body.

func (*Request) BodyInflate

func (req *Request) BodyInflate() ([]byte, error)

BodyInflate returns inflated body data.

This method may be used if the response header contains 'Content-Encoding: deflate' for reading inflated request body. Use Body for reading deflated request body.

func (*Request) BodyWriteTo

func (req *Request) BodyWriteTo(w io.Writer) error

BodyWriteTo writes request body to w.

func (*Request) BodyWriter

func (req *Request) BodyWriter() io.Writer

BodyWriter returns writer for populating request body.

func (*Request) ConnectionClose

func (req *Request) ConnectionClose() bool

ConnectionClose returns true if 'Connection: close' header is set.

func (*Request) ContinueReadBody

func (req *Request) ContinueReadBody(r *bufio.Reader, maxBodySize int) error

ContinueReadBody reads request body if request header contains 'Expect: 100-continue'.

The caller must send StatusContinue response before calling this method.

If maxBodySize > 0 and the body size exceeds maxBodySize, then ErrBodyTooLarge is returned.

func (*Request) CopyTo

func (req *Request) CopyTo(dst *Request)

CopyTo copies req contents to dst except of body stream.

func (*Request) Host

func (req *Request) Host() []byte

Host returns the host for the given request.

func (*Request) IsBodyStream

func (req *Request) IsBodyStream() bool

IsBodyStream returns true if body is set via SetBodyStream*

func (*Request) MayContinue

func (req *Request) MayContinue() bool

MayContinue returns true if the request contains 'Expect: 100-continue' header.

The caller must do one of the following actions if MayContinue returns true:

- Either send StatusExpectationFailed response if request headers don't
  satisfy the caller.
- Or send StatusContinue response before reading request body
  with ContinueReadBody.
- Or close the connection.

func (*Request) MultipartForm

func (req *Request) MultipartForm() (*multipart.Form, error)

MultipartForm returns requests's multipart form.

Returns ErrNoMultipartForm if request's Content-Type isn't 'multipart/form-data'.

RemoveMultipartFormFiles must be called after returned multipart form is processed.

func (*Request) PostArgs

func (req *Request) PostArgs() *Args

PostArgs returns POST arguments.

func (*Request) Read

func (req *Request) Read(r *bufio.Reader) error

Read reads request (including body) from the given r.

RemoveMultipartFormFiles or Reset must be called after reading multipart/form-data request in order to delete temporarily uploaded files.

If MayContinue returns true, the caller must:

- Either send StatusExpectationFailed response if request headers don't
  satisfy the caller.
- Or send StatusContinue response before reading request body
  with ContinueReadBody.
- Or close the connection.

io.EOF is returned if r is closed before reading the first header byte.

func (*Request) ReadLimitBody

func (req *Request) ReadLimitBody(r *bufio.Reader, maxBodySize int) error

ReadLimitBody reads request from the given r, limiting the body size.

If maxBodySize > 0 and the body size exceeds maxBodySize, then ErrBodyTooLarge is returned.

RemoveMultipartFormFiles or Reset must be called after reading multipart/form-data request in order to delete temporarily uploaded files.

If MayContinue returns true, the caller must:

- Either send StatusExpectationFailed response if request headers don't
  satisfy the caller.
- Or send StatusContinue response before reading request body
  with ContinueReadBody.
- Or close the connection.

io.EOF is returned if r is closed before reading the first header byte.

func (*Request) ReleaseBody

func (req *Request) ReleaseBody(size int)

ReleaseBody retires the request body if it is greater than "size" bytes.

This permits GC to reclaim the large buffer. If used, must be before ReleaseRequest.

func (*Request) RemoveMultipartFormFiles

func (req *Request) RemoveMultipartFormFiles()

RemoveMultipartFormFiles removes multipart/form-data temporary files associated with the request.

func (*Request) RequestURI

func (req *Request) RequestURI() []byte

RequestURI returns request's URI.

func (*Request) Reset

func (req *Request) Reset()

Reset clears request contents.

func (*Request) ResetBody

func (req *Request) ResetBody()

ResetBody resets request body.

func (*Request) SetBody

func (req *Request) SetBody(body []byte)

SetBody sets request body.

It is safe re-using body argument after the function returns.

func (*Request) SetBodyStream

func (req *Request) SetBodyStream(bodyStream io.Reader, bodySize int)

SetBodyStream sets request body stream and, optionally body size.

If bodySize is >= 0, then the bodyStream must provide exactly bodySize bytes before returning io.EOF.

If bodySize < 0, then bodyStream is read until io.EOF.

bodyStream.Close() is called after finishing reading all body data if it implements io.Closer.

Note that GET and HEAD requests cannot have body.

See also SetBodyStreamWriter.

func (*Request) SetBodyStreamWriter

func (req *Request) SetBodyStreamWriter(sw StreamWriter)

SetBodyStreamWriter registers the given sw for populating request body.

This function may be used in the following cases:

* if request body is too big (more than 10MB).
* if request body is streamed from slow external sources.
* if request body must be streamed to the server in chunks
(aka `http client push` or `chunked transfer-encoding`).

Note that GET and HEAD requests cannot have body.

/ See also SetBodyStream.

func (*Request) SetBodyString

func (req *Request) SetBodyString(body string)

SetBodyString sets request body.

func (*Request) SetConnectionClose

func (req *Request) SetConnectionClose()

SetConnectionClose sets 'Connection: close' header.

func (*Request) SetHost

func (req *Request) SetHost(host string)

SetHost sets host for the request.

func (*Request) SetHostBytes

func (req *Request) SetHostBytes(host []byte)

SetHostBytes sets host for the request.

func (*Request) SetRequestURI

func (req *Request) SetRequestURI(requestURI string)

SetRequestURI sets RequestURI.

func (*Request) SetRequestURIBytes

func (req *Request) SetRequestURIBytes(requestURI []byte)

SetRequestURIBytes sets RequestURI.

func (*Request) String

func (req *Request) String() string

String returns request representation.

Returns error message instead of request representation on error.

Use Write instead of String for performance-critical code.

func (*Request) URI

func (req *Request) URI() *URI

URI returns request URI

func (*Request) Write

func (req *Request) Write(w *bufio.Writer) error

Write writes request to w.

Write doesn't flush request to w for performance reasons.

See also WriteTo.

func (*Request) WriteTo

func (req *Request) WriteTo(w io.Writer) (int64, error)

WriteTo writes request to w. It implements io.WriterTo.

type RequestCtx

type RequestCtx struct {

	// Incoming request.
	//
	// Copying Request by value is forbidden. Use pointer to Request instead.
	Request Request

	// Outgoing response.
	//
	// Copying Response by value is forbidden. Use pointer to Response instead.
	Response Response
	// contains filtered or unexported fields
}

RequestCtx contains incoming request and manages outgoing response.

It is forbidden copying RequestCtx instances.

RequestHandler should avoid holding references to incoming RequestCtx and/or its' members after the return. If holding RequestCtx references after the return is unavoidable (for instance, ctx is passed to a separate goroutine and ctx lifetime cannot be controlled), then the RequestHandler MUST call ctx.TimeoutError() before return.

It is unsafe modifying/reading RequestCtx instance from concurrently running goroutines. The only exception is TimeoutError*, which may be called while other goroutines accessing RequestCtx.

func (*RequestCtx) ConnID

func (ctx *RequestCtx) ConnID() uint64

ConnID returns unique connection ID.

This ID may be used to match distinct requests to the same incoming connection.

func (*RequestCtx) ConnRequestNum

func (ctx *RequestCtx) ConnRequestNum() uint64

ConnRequestNum returns request sequence number for the current connection.

func (*RequestCtx) ConnTime

func (ctx *RequestCtx) ConnTime() time.Time

ConnTime returns the time server starts serving the connection the current request came from.

func (*RequestCtx) Error

func (ctx *RequestCtx) Error(msg string, statusCode int)

Error sets response status code to the given value and sets response body to the given message.

func (*RequestCtx) FormFile

func (ctx *RequestCtx) FormFile(key string) (*multipart.FileHeader, error)

FormFile returns uploaded file associated with the given multipart form key.

The file is automatically deleted after returning from RequestHandler, so either move or copy uploaded file into new place if you want retaining it.

Use SaveMultipartFile function for permanently saving uploaded file.

The returned file header is valid until returning from RequestHandler.

func (*RequestCtx) FormValue

func (ctx *RequestCtx) FormValue(key string) []byte

FormValue returns form value associated with the given key.

The value is searched in the following places:

* Query string.
* POST or PUT body.

There are more fine-grained methods for obtaining form values:

* QueryArgs for obtaining values from query string.
* PostArgs for obtaining values from POST or PUT body.
* MultipartForm for obtaining values from multipart form.
* FormFile for obtaining uploaded files.

The returned value is valid until returning from RequestHandler.

func (*RequestCtx) Hijack

func (ctx *RequestCtx) Hijack(handler HijackHandler)

Hijack registers the given handler for connection hijacking.

The handler is called after returning from RequestHandler and sending http response. The current connection is passed to the handler. The connection is automatically closed after returning from the handler.

The server skips calling the handler in the following cases:

* 'Connection: close' header exists in either request or response.
* Unexpected error during response writing to the connection.

The server stops processing requests from hijacked connections. Server limits such as Concurrency, ReadTimeout, WriteTimeout, etc. aren't applied to hijacked connections.

The handler must not retain references to ctx members.

Arbitrary 'Connection: Upgrade' protocols may be implemented with HijackHandler. For instance,

* WebSocket ( https://en.wikipedia.org/wiki/WebSocket )
* HTTP/2.0 ( https://en.wikipedia.org/wiki/HTTP/2 )

func (*RequestCtx) Host

func (ctx *RequestCtx) Host() []byte

Host returns requested host.

The host is valid until returning from RequestHandler.

func (*RequestCtx) ID

func (ctx *RequestCtx) ID() uint64

ID returns unique ID of the request.

func (*RequestCtx) IfModifiedSince

func (ctx *RequestCtx) IfModifiedSince(lastModified time.Time) bool

IfModifiedSince returns true if lastModified exceeds 'If-Modified-Since' value from the request header.

The function returns true also 'If-Modified-Since' request header is missing.

func (*RequestCtx) Init

func (ctx *RequestCtx) Init(req *Request, remoteAddr net.Addr, logger Logger)

Init prepares ctx for passing to RequestHandler.

remoteAddr and logger are optional. They are used by RequestCtx.Logger().

This function is intended for custom Server implementations.

func (*RequestCtx) IsBodyStream

func (ctx *RequestCtx) IsBodyStream() bool

IsBodyStream returns true if response body is set via SetBodyStream*.

func (*RequestCtx) IsDelete

func (ctx *RequestCtx) IsDelete() bool

IsDelete returns true if request method is DELETE.

func (*RequestCtx) IsGet

func (ctx *RequestCtx) IsGet() bool

IsGet returns true if request method is GET.

func (*RequestCtx) IsHead

func (ctx *RequestCtx) IsHead() bool

IsHead returns true if request method is HEAD.

func (*RequestCtx) IsPost

func (ctx *RequestCtx) IsPost() bool

IsPost returns true if request method is POST.

func (*RequestCtx) IsPut

func (ctx *RequestCtx) IsPut() bool

IsPut returns true if request method is PUT.

func (*RequestCtx) IsTLS

func (ctx *RequestCtx) IsTLS() bool

IsTLS returns true if the underlying connection is tls.Conn.

tls.Conn is an encrypted connection (aka SSL, HTTPS).

func (*RequestCtx) LastTimeoutErrorResponse

func (ctx *RequestCtx) LastTimeoutErrorResponse() *Response

LastTimeoutErrorResponse returns the last timeout response set via TimeoutError* call.

This function is intended for custom server implementations.

func (*RequestCtx) LocalAddr

func (ctx *RequestCtx) LocalAddr() net.Addr

LocalAddr returns server address for the given request.

Always returns non-nil result.

func (*RequestCtx) Logger

func (ctx *RequestCtx) Logger() Logger

Logger returns logger, which may be used for logging arbitrary request-specific messages inside RequestHandler.

Each message logged via returned logger contains request-specific information such as request id, request duration, local address, remote address, request method and request url.

It is safe re-using returned logger for logging multiple messages for the current request.

The returned logger is valid until returning from RequestHandler.

func (*RequestCtx) Method

func (ctx *RequestCtx) Method() []byte

Method return request method.

Returned value is valid until returning from RequestHandler.

func (*RequestCtx) MultipartForm

func (ctx *RequestCtx) MultipartForm() (*multipart.Form, error)

MultipartForm returns requests's multipart form.

Returns ErrNoMultipartForm if request's content-type isn't 'multipart/form-data'.

All uploaded temporary files are automatically deleted after returning from RequestHandler. Either move or copy uploaded files into new place if you want retaining them.

Use SaveMultipartFile function for permanently saving uploaded file.

The returned form is valid until returning from RequestHandler.

See also FormFile and FormValue.

func (*RequestCtx) NotFound

func (ctx *RequestCtx) NotFound()

NotFound resets response and sets '404 Not Found' response status code.

func (*RequestCtx) NotModified

func (ctx *RequestCtx) NotModified()

NotModified resets response and sets '304 Not Modified' response status code.

func (*RequestCtx) Path

func (ctx *RequestCtx) Path() []byte

Path returns requested path.

The path is valid until returning from RequestHandler.

func (*RequestCtx) PostArgs

func (ctx *RequestCtx) PostArgs() *Args

PostArgs returns POST arguments.

It doesn't return query arguments from RequestURI - use QueryArgs for this.

Returned arguments are valid until returning from RequestHandler.

See also QueryArgs, FormValue and FormFile.

func (*RequestCtx) PostBody

func (ctx *RequestCtx) PostBody() []byte

PostBody returns POST request body.

The returned value is valid until RequestHandler return.

func (*RequestCtx) QueryArgs

func (ctx *RequestCtx) QueryArgs() *Args

QueryArgs returns query arguments from RequestURI.

It doesn't return POST'ed arguments - use PostArgs() for this.

Returned arguments are valid until returning from RequestHandler.

See also PostArgs, FormValue and FormFile.

func (*RequestCtx) Redirect

func (ctx *RequestCtx) Redirect(uri string, statusCode int)

Redirect sets 'Location: uri' response header and sets the given statusCode.

statusCode must have one of the following values:

* StatusMovedPermanently (301)
* StatusFound (302)
* StatusSeeOther (303)
* StatusTemporaryRedirect (307)

All other statusCode values are replaced by StatusFound (302).

The redirect uri may be either absolute or relative to the current request uri.

func (*RequestCtx) RedirectBytes

func (ctx *RequestCtx) RedirectBytes(uri []byte, statusCode int)

RedirectBytes sets 'Location: uri' response header and sets the given statusCode.

statusCode must have one of the following values:

* StatusMovedPermanently (301)
* StatusFound (302)
* StatusSeeOther (303)
* StatusTemporaryRedirect (307)

All other statusCode values are replaced by StatusFound (302).

The redirect uri may be either absolute or relative to the current request uri.

func (*RequestCtx) Referer

func (ctx *RequestCtx) Referer() []byte

Referer returns request referer.

The referer is valid until returning from RequestHandler.

func (*RequestCtx) RemoteAddr

func (ctx *RequestCtx) RemoteAddr() net.Addr

RemoteAddr returns client address for the given request.

Always returns non-nil result.

func (*RequestCtx) RemoteIP

func (ctx *RequestCtx) RemoteIP() net.IP

RemoteIP returns client ip for the given request.

Always returns non-nil result.

func (*RequestCtx) RequestURI

func (ctx *RequestCtx) RequestURI() []byte

RequestURI returns RequestURI.

This uri is valid until returning from RequestHandler.

func (*RequestCtx) ResetBody

func (ctx *RequestCtx) ResetBody()

ResetBody resets response body contents.

func (*RequestCtx) SendFile

func (ctx *RequestCtx) SendFile(path string)

SendFile sends local file contents from the given path as response body.

This is a shortcut to ServeFile(ctx, path).

SendFile logs all the errors via ctx.Logger.

See also ServeFile, FSHandler and FS.

func (*RequestCtx) SendFileBytes

func (ctx *RequestCtx) SendFileBytes(path []byte)

SendFileBytes sends local file contents from the given path as response body.

This is a shortcut to ServeFileBytes(ctx, path).

SendFileBytes logs all the errors via ctx.Logger.

See also ServeFileBytes, FSHandler and FS.

func (*RequestCtx) SetBody

func (ctx *RequestCtx) SetBody(body []byte)

SetBody sets response body to the given value.

It is safe re-using body argument after the function returns.

func (*RequestCtx) SetBodyStream

func (ctx *RequestCtx) SetBodyStream(bodyStream io.Reader, bodySize int)

SetBodyStream sets response body stream and, optionally body size.

bodyStream.Close() is called after finishing reading all body data if it implements io.Closer.

If bodySize is >= 0, then bodySize bytes must be provided by bodyStream before returning io.EOF.

If bodySize < 0, then bodyStream is read until io.EOF.

See also SetBodyStreamWriter.

func (*RequestCtx) SetBodyStreamWriter

func (ctx *RequestCtx) SetBodyStreamWriter(sw StreamWriter)

SetBodyStreamWriter registers the given stream writer for populating response body.

Access to RequestCtx and/or its' members is forbidden from sw.

This function may be used in the following cases:

* if response body is too big (more than 10MB).
* if response body is streamed from slow external sources.
* if response body must be streamed to the client in chunks.
(aka `http server push`).

func (*RequestCtx) SetBodyString

func (ctx *RequestCtx) SetBodyString(body string)

SetBodyString sets response body to the given value.

func (*RequestCtx) SetConnectionClose

func (ctx *RequestCtx) SetConnectionClose()

SetConnectionClose sets 'Connection: close' response header and closes connection after the RequestHandler returns.

func (*RequestCtx) SetContentType

func (ctx *RequestCtx) SetContentType(contentType string)

SetContentType sets response Content-Type.

func (*RequestCtx) SetContentTypeBytes

func (ctx *RequestCtx) SetContentTypeBytes(contentType []byte)

SetContentTypeBytes sets response Content-Type.

It is safe modifying contentType buffer after function return.

func (*RequestCtx) SetStatusCode

func (ctx *RequestCtx) SetStatusCode(statusCode int)

SetStatusCode sets response status code.

func (*RequestCtx) SetUserValue

func (ctx *RequestCtx) SetUserValue(key string, value interface{})

SetUserValue stores the given value (arbitrary object) under the given key in ctx.

The value stored in ctx may be obtained by UserValue*.

This functionality may be useful for passing arbitrary values between functions involved in request processing.

All the values are removed from ctx after returning from the top RequestHandler. Additionally, Close method is called on each value implementing io.Closer before removing the value from ctx.

func (*RequestCtx) SetUserValueBytes

func (ctx *RequestCtx) SetUserValueBytes(key []byte, value interface{})

SetUserValueBytes stores the given value (arbitrary object) under the given key in ctx.

The value stored in ctx may be obtained by UserValue*.

This functionality may be useful for passing arbitrary values between functions involved in request processing.

All the values stored in ctx are deleted after returning from RequestHandler.

func (*RequestCtx) Success

func (ctx *RequestCtx) Success(contentType string, body []byte)

Success sets response Content-Type and body to the given values.

func (*RequestCtx) SuccessString

func (ctx *RequestCtx) SuccessString(contentType, body string)

SuccessString sets response Content-Type and body to the given values.

func (*RequestCtx) TLSConnectionState

func (ctx *RequestCtx) TLSConnectionState() *tls.ConnectionState

TLSConnectionState returns TLS connection state.

The function returns nil if the underlying connection isn't tls.Conn.

The returned state may be used for verifying TLS version, client certificates, etc.

func (*RequestCtx) Time

func (ctx *RequestCtx) Time() time.Time

Time returns RequestHandler call time.

func (*RequestCtx) TimeoutError

func (ctx *RequestCtx) TimeoutError(msg string)

TimeoutError sets response status code to StatusRequestTimeout and sets body to the given msg.

All response modifications after TimeoutError call are ignored.

TimeoutError MUST be called before returning from RequestHandler if there are references to ctx and/or its members in other goroutines remain.

Usage of this function is discouraged. Prefer eliminating ctx references from pending goroutines instead of using this function.

func (*RequestCtx) TimeoutErrorWithCode

func (ctx *RequestCtx) TimeoutErrorWithCode(msg string, statusCode int)

TimeoutErrorWithCode sets response body to msg and response status code to statusCode.

All response modifications after TimeoutErrorWithCode call are ignored.

TimeoutErrorWithCode MUST be called before returning from RequestHandler if there are references to ctx and/or its members in other goroutines remain.

Usage of this function is discouraged. Prefer eliminating ctx references from pending goroutines instead of using this function.

func (*RequestCtx) TimeoutErrorWithResponse

func (ctx *RequestCtx) TimeoutErrorWithResponse(resp *Response)

TimeoutErrorWithResponse marks the ctx as timed out and sends the given response to the client.

All ctx modifications after TimeoutErrorWithResponse call are ignored.

TimeoutErrorWithResponse MUST be called before returning from RequestHandler if there are references to ctx and/or its members in other goroutines remain.

Usage of this function is discouraged. Prefer eliminating ctx references from pending goroutines instead of using this function.

func (*RequestCtx) URI

func (ctx *RequestCtx) URI() *URI

URI returns requested uri.

The uri is valid until returning from RequestHandler.

func (*RequestCtx) UserAgent

func (ctx *RequestCtx) UserAgent() []byte

UserAgent returns User-Agent header value from the request.

func (*RequestCtx) UserValue

func (ctx *RequestCtx) UserValue(key string) interface{}

UserValue returns the value stored via SetUserValue* under the given key.

func (*RequestCtx) UserValueBytes

func (ctx *RequestCtx) UserValueBytes(key []byte) interface{}

UserValueBytes returns the value stored via SetUserValue* under the given key.

func (*RequestCtx) Write

func (ctx *RequestCtx) Write(p []byte) (int, error)

Write writes p into response body.

func (*RequestCtx) WriteString

func (ctx *RequestCtx) WriteString(s string) (int, error)

WriteString appends s to response body.

type RequestHandler

type RequestHandler func(ctx *RequestCtx)

RequestHandler must process incoming requests.

RequestHandler must call ctx.TimeoutError() before returning if it keeps references to ctx and/or its' members after the return. Consider wrapping RequestHandler into TimeoutHandler if response time must be limited.

func CompressHandler

func CompressHandler(h RequestHandler) RequestHandler

CompressHandler returns RequestHandler that transparently compresses response body generated by h if the request contains 'gzip' or 'deflate' 'Accept-Encoding' header.

func CompressHandlerLevel

func CompressHandlerLevel(h RequestHandler, level int) RequestHandler

CompressHandlerLevel returns RequestHandler that transparently compresses response body generated by h if the request contains 'gzip' or 'deflate' 'Accept-Encoding' header.

Level is the desired compression level:

* CompressNoCompression
* CompressBestSpeed
* CompressBestCompression
* CompressDefaultCompression

func FSHandler

func FSHandler(root string, stripSlashes int) RequestHandler

FSHandler returns request handler serving static files from the given root folder.

stripSlashes indicates how many leading slashes must be stripped from requested path before searching requested file in the root folder. Examples:

* stripSlashes = 0, original path: "/foo/bar", result: "/foo/bar"
* stripSlashes = 1, original path: "/foo/bar", result: "/bar"
* stripSlashes = 2, original path: "/foo/bar", result: ""

The returned request handler automatically generates index pages for directories without index.html.

The returned handler caches requested file handles for FSHandlerCacheDuration. Make sure your program has enough 'max open files' limit aka 'ulimit -n' if root folder contains many files.

Do not create multiple request handler instances for the same (root, stripSlashes) arguments - just reuse a single instance. Otherwise goroutine leak will occur.

func TimeoutHandler

func TimeoutHandler(h RequestHandler, timeout time.Duration, msg string) RequestHandler

TimeoutHandler creates RequestHandler, which returns StatusRequestTimeout error with the given msg to the client if h didn't return during the given duration.

The returned handler may return StatusTooManyRequests error with the given msg to the client if there are more than Server.Concurrency concurrent handlers h are running at the moment.

type RequestHeader

type RequestHeader struct {
	// contains filtered or unexported fields
}

RequestHeader represents HTTP request header.

It is forbidden copying RequestHeader instances. Create new instances instead and use CopyTo.

RequestHeader instance MUST NOT be used from concurrently running goroutines.

func (*RequestHeader) Add

func (h *RequestHeader) Add(key, value string)

Add adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*RequestHeader) AddBytesK

func (h *RequestHeader) AddBytesK(key []byte, value string)

AddBytesK adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*RequestHeader) AddBytesKV

func (h *RequestHeader) AddBytesKV(key, value []byte)

AddBytesKV adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*RequestHeader) AddBytesV

func (h *RequestHeader) AddBytesV(key string, value []byte)

AddBytesV adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*RequestHeader) AppendBytes

func (h *RequestHeader) AppendBytes(dst []byte) []byte

AppendBytes appends request header representation to dst and returns the extended dst.

func (*RequestHeader) ConnectionClose

func (h *RequestHeader) ConnectionClose() bool

ConnectionClose returns true if 'Connection: close' header is set.

func (*RequestHeader) ConnectionUpgrade

func (h *RequestHeader) ConnectionUpgrade() bool

ConnectionUpgrade returns true if 'Connection: Upgrade' header is set.

func (*RequestHeader) ContentLength

func (h *RequestHeader) ContentLength() int

ContentLength returns Content-Length header value.

It may be negative: -1 means Transfer-Encoding: chunked.

func (*RequestHeader) ContentType

func (h *RequestHeader) ContentType() []byte

ContentType returns Content-Type header value.

func (*RequestHeader) Cookie

func (h *RequestHeader) Cookie(key string) []byte

Cookie returns cookie for the given key.

func (*RequestHeader) CookieBytes

func (h *RequestHeader) CookieBytes(key []byte) []byte

CookieBytes returns cookie for the given key.

func (*RequestHeader) CopyTo

func (h *RequestHeader) CopyTo(dst *RequestHeader)

CopyTo copies all the headers to dst.

func (*RequestHeader) Del

func (h *RequestHeader) Del(key string)

Del deletes header with the given key.

func (*RequestHeader) DelAllCookies

func (h *RequestHeader) DelAllCookies()

DelAllCookies removes all the cookies from request headers.

func (*RequestHeader) DelBytes

func (h *RequestHeader) DelBytes(key []byte)

DelBytes deletes header with the given key.

func (*RequestHeader) DelCookie

func (h *RequestHeader) DelCookie(key string)

DelCookie removes cookie under the given key.

func (*RequestHeader) DelCookieBytes

func (h *RequestHeader) DelCookieBytes(key []byte)

DelCookieBytes removes cookie under the given key.

func (*RequestHeader) DisableNormalizing

func (h *RequestHeader) DisableNormalizing()

DisableNormalizing disables header names' normalization.

By default all the header names are normalized by uppercasing the first letter and all the first letters following dashes, while lowercasing all the other letters. Examples:

* CONNECTION -> Connection
* conteNT-tYPE -> Content-Type
* foo-bar-baz -> Foo-Bar-Baz

Disable header names' normalization only if know what are you doing.

func (*RequestHeader) HasAcceptEncoding

func (h *RequestHeader) HasAcceptEncoding(acceptEncoding string) bool

HasAcceptEncoding returns true if the header contains the given Accept-Encoding value.

func (*RequestHeader) HasAcceptEncodingBytes

func (h *RequestHeader) HasAcceptEncodingBytes(acceptEncoding []byte) bool

HasAcceptEncodingBytes returns true if the header contains the given Accept-Encoding value.

func (*RequestHeader) Header

func (h *RequestHeader) Header() []byte

Header returns request header representation.

The returned representation is valid until the next call to RequestHeader methods.

func (*RequestHeader) HeaderMap

func (h *RequestHeader) HeaderMap() map[string]string

HeaderMap returns request header representation.

func (*RequestHeader) Host

func (h *RequestHeader) Host() []byte

Host returns Host header value.

func (*RequestHeader) IsDelete

func (h *RequestHeader) IsDelete() bool

IsDelete returns true if request method is DELETE.

func (*RequestHeader) IsGet

func (h *RequestHeader) IsGet() bool

IsGet returns true if request method is GET.

func (*RequestHeader) IsHTTP11

func (h *RequestHeader) IsHTTP11() bool

IsHTTP11 returns true if the request is HTTP/1.1.

func (*RequestHeader) IsHead

func (h *RequestHeader) IsHead() bool

IsHead returns true if request method is HEAD.

func (*RequestHeader) IsPost

func (h *RequestHeader) IsPost() bool

IsPost returns true if request methos is POST.

func (*RequestHeader) IsPut

func (h *RequestHeader) IsPut() bool

IsPut returns true if request method is PUT.

func (*RequestHeader) Len

func (h *RequestHeader) Len() int

Len returns the number of headers set, i.e. the number of times f is called in VisitAll.

func (*RequestHeader) Method

func (h *RequestHeader) Method() []byte

Method returns HTTP request method.

func (*RequestHeader) MultipartFormBoundary

func (h *RequestHeader) MultipartFormBoundary() []byte

MultipartFormBoundary returns boundary part from 'multipart/form-data; boundary=...' Content-Type.

func (*RequestHeader) Peek

func (h *RequestHeader) Peek(key string) []byte

Peek returns header value for the given key.

Returned value is valid until the next call to RequestHeader. Do not store references to returned value. Make copies instead.

func (*RequestHeader) PeekBytes

func (h *RequestHeader) PeekBytes(key []byte) []byte

PeekBytes returns header value for the given key.

Returned value is valid until the next call to RequestHeader. Do not store references to returned value. Make copies instead.

func (*RequestHeader) Read

func (h *RequestHeader) Read(r *bufio.Reader) error

Read reads request header from r.

io.EOF is returned if r is closed before reading the first header byte.

func (*RequestHeader) Referer

func (h *RequestHeader) Referer() []byte

Referer returns Referer header value.

func (*RequestHeader) RequestURI

func (h *RequestHeader) RequestURI() []byte

RequestURI returns RequestURI from the first HTTP request line.

func (*RequestHeader) Reset

func (h *RequestHeader) Reset()

Reset clears request header.

func (*RequestHeader) ResetConnectionClose

func (h *RequestHeader) ResetConnectionClose()

ResetConnectionClose clears 'Connection: close' header if it exists.

func (*RequestHeader) Set

func (h *RequestHeader) Set(key, value string)

Set sets the given 'key: value' header.

func (*RequestHeader) SetByteRange

func (h *RequestHeader) SetByteRange(startPos, endPos int)

SetByteRange sets 'Range: bytes=startPos-endPos' header.

* If startPos is negative, then 'bytes=-startPos' value is set.
* If endPos is negative, then 'bytes=startPos-' value is set.

func (*RequestHeader) SetBytesK

func (h *RequestHeader) SetBytesK(key []byte, value string)

SetBytesK sets the given 'key: value' header.

func (*RequestHeader) SetBytesKV

func (h *RequestHeader) SetBytesKV(key, value []byte)

SetBytesKV sets the given 'key: value' header.

func (*RequestHeader) SetBytesV

func (h *RequestHeader) SetBytesV(key string, value []byte)

SetBytesV sets the given 'key: value' header.

func (*RequestHeader) SetCanonical

func (h *RequestHeader) SetCanonical(key, value []byte)

SetCanonical sets the given 'key: value' header assuming that key is in canonical form.

func (*RequestHeader) SetConnectionClose

func (h *RequestHeader) SetConnectionClose()

SetConnectionClose sets 'Connection: close' header.

func (*RequestHeader) SetContentLength

func (h *RequestHeader) SetContentLength(contentLength int)

SetContentLength sets Content-Length header value.

Negative content-length sets 'Transfer-Encoding: chunked' header.

func (*RequestHeader) SetContentType

func (h *RequestHeader) SetContentType(contentType string)

SetContentType sets Content-Type header value.

func (*RequestHeader) SetContentTypeBytes

func (h *RequestHeader) SetContentTypeBytes(contentType []byte)

SetContentTypeBytes sets Content-Type header value.

func (*RequestHeader) SetCookie

func (h *RequestHeader) SetCookie(key, value string)

SetCookie sets 'key: value' cookies.

func (*RequestHeader) SetCookieBytesK

func (h *RequestHeader) SetCookieBytesK(key []byte, value string)

SetCookieBytesK sets 'key: value' cookies.

func (*RequestHeader) SetCookieBytesKV

func (h *RequestHeader) SetCookieBytesKV(key, value []byte)

SetCookieBytesKV sets 'key: value' cookies.

func (*RequestHeader) SetHost

func (h *RequestHeader) SetHost(host string)

SetHost sets Host header value.

func (*RequestHeader) SetHostBytes

func (h *RequestHeader) SetHostBytes(host []byte)

SetHostBytes sets Host header value.

func (*RequestHeader) SetMethod

func (h *RequestHeader) SetMethod(method string)

SetMethod sets HTTP request method.

func (*RequestHeader) SetMethodBytes

func (h *RequestHeader) SetMethodBytes(method []byte)

SetMethodBytes sets HTTP request method.

func (*RequestHeader) SetMultipartFormBoundary

func (h *RequestHeader) SetMultipartFormBoundary(boundary string)

SetMultipartFormBoundary sets the following Content-Type: 'multipart/form-data; boundary=...' where ... is substituted by the given boundary.

func (*RequestHeader) SetMultipartFormBoundaryBytes

func (h *RequestHeader) SetMultipartFormBoundaryBytes(boundary []byte)

SetMultipartFormBoundaryBytes sets the following Content-Type: 'multipart/form-data; boundary=...' where ... is substituted by the given boundary.

func (*RequestHeader) SetReferer

func (h *RequestHeader) SetReferer(referer string)

SetReferer sets Referer header value.

func (*RequestHeader) SetRefererBytes

func (h *RequestHeader) SetRefererBytes(referer []byte)

SetRefererBytes sets Referer header value.

func (*RequestHeader) SetRequestURI

func (h *RequestHeader) SetRequestURI(requestURI string)

SetRequestURI sets RequestURI for the first HTTP request line. RequestURI must be properly encoded. Use URI.RequestURI for constructing proper RequestURI if unsure.

func (*RequestHeader) SetRequestURIBytes

func (h *RequestHeader) SetRequestURIBytes(requestURI []byte)

SetRequestURIBytes sets RequestURI for the first HTTP request line. RequestURI must be properly encoded. Use URI.RequestURI for constructing proper RequestURI if unsure.

func (*RequestHeader) SetUserAgent

func (h *RequestHeader) SetUserAgent(userAgent string)

SetUserAgent sets User-Agent header value.

func (*RequestHeader) SetUserAgentBytes

func (h *RequestHeader) SetUserAgentBytes(userAgent []byte)

SetUserAgentBytes sets User-Agent header value.

func (*RequestHeader) String

func (h *RequestHeader) String() string

String returns request header representation.

func (*RequestHeader) UserAgent

func (h *RequestHeader) UserAgent() []byte

UserAgent returns User-Agent header value.

func (*RequestHeader) VisitAll

func (h *RequestHeader) VisitAll(f func(key, value []byte))

VisitAll calls f for each header.

f must not retain references to key and/or value after returning. Copy key and/or value contents before returning if you need retaining them.

func (*RequestHeader) VisitAllCookie

func (h *RequestHeader) VisitAllCookie(f func(key, value []byte))

VisitAllCookie calls f for each request cookie.

f must not retain references to key and/or value after returning.

func (*RequestHeader) Write

func (h *RequestHeader) Write(w *bufio.Writer) error

Write writes request header to w.

func (*RequestHeader) WriteTo

func (h *RequestHeader) WriteTo(w io.Writer) (int64, error)

WriteTo writes request header to w.

WriteTo implements io.WriterTo interface.

type Response

type Response struct {

	// Response header
	//
	// Copying Header by value is forbidden. Use pointer to Header instead.
	Header ResponseHeader

	// Response.Read() skips reading body if set to true.
	// Use it for reading HEAD responses.
	//
	// Response.Write() skips writing body if set to true.
	// Use it for writing HEAD responses.
	SkipBody bool
	// contains filtered or unexported fields
}

Response represents HTTP response.

It is forbidden copying Response instances. Create new instances and use CopyTo instead.

Response instance MUST NOT be used from concurrently running goroutines.

func AcquireResponse

func AcquireResponse() *Response

AcquireResponse returns an empty Response instance from response pool.

The returned Response instance may be passed to ReleaseResponse when it is no longer needed. This allows Response recycling, reduces GC pressure and usually improves performance.

func (*Response) AppendBody

func (resp *Response) AppendBody(p []byte)

AppendBody appends p to response body.

It is safe re-using p after the function returns.

func (*Response) AppendBodyString

func (resp *Response) AppendBodyString(s string)

AppendBodyString appends s to response body.

func (*Response) Body

func (resp *Response) Body() []byte

Body returns response body.

func (*Response) BodyGunzip

func (resp *Response) BodyGunzip() ([]byte, error)

BodyGunzip returns un-gzipped body data.

This method may be used if the response header contains 'Content-Encoding: gzip' for reading un-gzipped body. Use Body for reading gzipped response body.

func (*Response) BodyInflate

func (resp *Response) BodyInflate() ([]byte, error)

BodyInflate returns inflated body data.

This method may be used if the response header contains 'Content-Encoding: deflate' for reading inflated response body. Use Body for reading deflated response body.

func (*Response) BodyWriteTo

func (resp *Response) BodyWriteTo(w io.Writer) error

BodyWriteTo writes response body to w.

func (*Response) BodyWriter

func (resp *Response) BodyWriter() io.Writer

BodyWriter returns writer for populating response body.

If used inside RequestHandler, the returned writer must not be used after returning from RequestHandler. Use RequestCtx.Write or SetBodyStreamWriter in this case.

func (*Response) ConnectionClose

func (resp *Response) ConnectionClose() bool

ConnectionClose returns true if 'Connection: close' header is set.

func (*Response) CopyTo

func (resp *Response) CopyTo(dst *Response)

CopyTo copies resp contents to dst except of body stream.

func (*Response) IsBodyStream

func (resp *Response) IsBodyStream() bool

IsBodyStream returns true if body is set via SetBodyStream*

func (*Response) Read

func (resp *Response) Read(r *bufio.Reader) error

Read reads response (including body) from the given r.

io.EOF is returned if r is closed before reading the first header byte.

func (*Response) ReadLimitBody

func (resp *Response) ReadLimitBody(r *bufio.Reader, maxBodySize int) error

ReadLimitBody reads response from the given r, limiting the body size.

If maxBodySize > 0 and the body size exceeds maxBodySize, then ErrBodyTooLarge is returned.

io.EOF is returned if r is closed before reading the first header byte.

func (*Response) ReleaseBody

func (resp *Response) ReleaseBody(size int)

ReleaseBody retires the response body if it is greater than "size" bytes.

This permits GC to reclaim the large buffer. If used, must be before ReleaseResponse.

func (*Response) Reset

func (resp *Response) Reset()

Reset clears response contents.

func (*Response) ResetBody

func (resp *Response) ResetBody()

ResetBody resets response body.

func (*Response) SendFile

func (resp *Response) SendFile(path string) error

SendFile registers file on the given path to be used as response body when Write is called.

Note that SendFile doesn't set Content-Type, so set it yourself with Header.SetContentType.

func (*Response) SetBody

func (resp *Response) SetBody(body []byte)

SetBody sets response body.

It is safe re-using body argument after the function returns.

func (*Response) SetBodyStream

func (resp *Response) SetBodyStream(bodyStream io.Reader, bodySize int)

SetBodyStream sets response body stream and, optionally body size.

If bodySize is >= 0, then the bodyStream must provide exactly bodySize bytes before returning io.EOF.

If bodySize < 0, then bodyStream is read until io.EOF.

bodyStream.Close() is called after finishing reading all body data if it implements io.Closer.

See also SetBodyStreamWriter.

func (*Response) SetBodyStreamWriter

func (resp *Response) SetBodyStreamWriter(sw StreamWriter)

SetBodyStreamWriter registers the given sw for populating response body.

This function may be used in the following cases:

* if response body is too big (more than 10MB).
* if response body is streamed from slow external sources.
* if response body must be streamed to the client in chunks
(aka `http server push` or `chunked transfer-encoding`).

See also SetBodyStream.

func (*Response) SetBodyString

func (resp *Response) SetBodyString(body string)

SetBodyString sets response body.

func (*Response) SetConnectionClose

func (resp *Response) SetConnectionClose()

SetConnectionClose sets 'Connection: close' header.

func (*Response) SetStatusCode

func (resp *Response) SetStatusCode(statusCode int)

SetStatusCode sets response status code.

func (*Response) StatusCode

func (resp *Response) StatusCode() int

StatusCode returns response status code.

func (*Response) String

func (resp *Response) String() string

String returns response representation.

Returns error message instead of response representation on error.

Use Write instead of String for performance-critical code.

func (*Response) Write

func (resp *Response) Write(w *bufio.Writer) error

Write writes response to w.

Write doesn't flush response to w for performance reasons.

See also WriteTo.

func (*Response) WriteDeflate

func (resp *Response) WriteDeflate(w *bufio.Writer) error

WriteDeflate writes response with deflated body to w.

The method deflates response body and sets 'Content-Encoding: deflate' header before writing response to w.

WriteDeflate doesn't flush response to w for performance reasons.

func (*Response) WriteDeflateLevel

func (resp *Response) WriteDeflateLevel(w *bufio.Writer, level int) error

WriteDeflateLevel writes response with deflated body to w.

Level is the desired compression level:

* CompressNoCompression
* CompressBestSpeed
* CompressBestCompression
* CompressDefaultCompression

The method deflates response body and sets 'Content-Encoding: deflate' header before writing response to w.

WriteDeflateLevel doesn't flush response to w for performance reasons.

func (*Response) WriteGzip

func (resp *Response) WriteGzip(w *bufio.Writer) error

WriteGzip writes response with gzipped body to w.

The method gzips response body and sets 'Content-Encoding: gzip' header before writing response to w.

WriteGzip doesn't flush response to w for performance reasons.

func (*Response) WriteGzipLevel

func (resp *Response) WriteGzipLevel(w *bufio.Writer, level int) error

WriteGzipLevel writes response with gzipped body to w.

Level is the desired compression level:

* CompressNoCompression
* CompressBestSpeed
* CompressBestCompression
* CompressDefaultCompression

The method gzips response body and sets 'Content-Encoding: gzip' header before writing response to w.

WriteGzipLevel doesn't flush response to w for performance reasons.

func (*Response) WriteTo

func (resp *Response) WriteTo(w io.Writer) (int64, error)

WriteTo writes response to w. It implements io.WriterTo.

type ResponseHeader

type ResponseHeader struct {
	// contains filtered or unexported fields
}

ResponseHeader represents HTTP response header.

It is forbidden copying ResponseHeader instances. Create new instances instead and use CopyTo.

ResponseHeader instance MUST NOT be used from concurrently running goroutines.

func (*ResponseHeader) Add

func (h *ResponseHeader) Add(key, value string)

Add adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*ResponseHeader) AddBytesK

func (h *ResponseHeader) AddBytesK(key []byte, value string)

AddBytesK adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*ResponseHeader) AddBytesKV

func (h *ResponseHeader) AddBytesKV(key, value []byte)

AddBytesKV adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*ResponseHeader) AddBytesV

func (h *ResponseHeader) AddBytesV(key string, value []byte)

AddBytesV adds the given 'key: value' header.

Multiple headers with the same key may be added.

func (*ResponseHeader) AppendBytes

func (h *ResponseHeader) AppendBytes(dst []byte) []byte

AppendBytes appends response header representation to dst and returns the extended dst.

func (*ResponseHeader) ConnectionClose

func (h *ResponseHeader) ConnectionClose() bool

ConnectionClose returns true if 'Connection: close' header is set.

func (*ResponseHeader) ConnectionUpgrade

func (h *ResponseHeader) ConnectionUpgrade() bool

ConnectionUpgrade returns true if 'Connection: Upgrade' header is set.

func (*ResponseHeader) ContentLength

func (h *ResponseHeader) ContentLength() int

ContentLength returns Content-Length header value.

It may be negative: -1 means Transfer-Encoding: chunked. -2 means Transfer-Encoding: identity.

func (*ResponseHeader) ContentType

func (h *ResponseHeader) ContentType() []byte

ContentType returns Content-Type header value.

func (*ResponseHeader) Cookie

func (h *ResponseHeader) Cookie(cookie *Cookie) bool

Cookie fills cookie for the given cookie.Key.

Returns false if cookie with the given cookie.Key is missing.

func (*ResponseHeader) CopyTo

func (h *ResponseHeader) CopyTo(dst *ResponseHeader)

CopyTo copies all the headers to dst.

func (*ResponseHeader) Del

func (h *ResponseHeader) Del(key string)

Del deletes header with the given key.

func (*ResponseHeader) DelAllCookies

func (h *ResponseHeader) DelAllCookies()

DelAllCookies removes all the cookies from response headers.

func (*ResponseHeader) DelBytes

func (h *ResponseHeader) DelBytes(key []byte)

DelBytes deletes header with the given key.

func (*ResponseHeader) DelClientCookie

func (h *ResponseHeader) DelClientCookie(key string)

DelClientCookie instructs the client to remove the given cookie.

Use DelCookie if you want just removing the cookie from response header.

func (*ResponseHeader) DelClientCookieBytes

func (h *ResponseHeader) DelClientCookieBytes(key []byte)

DelClientCookieBytes instructs the client to remove the given cookie.

Use DelCookieBytes if you want just removing the cookie from response header.

func (*ResponseHeader) DelCookie

func (h *ResponseHeader) DelCookie(key string)

DelCookie removes cookie under the given key from response header.

Note that DelCookie doesn't remove the cookie from the client. Use DelClientCookie instead.

func (*ResponseHeader) DelCookieBytes

func (h *ResponseHeader) DelCookieBytes(key []byte)

DelCookieBytes removes cookie under the given key from response header.

Note that DelCookieBytes doesn't remove the cookie from the client. Use DelClientCookieBytes instead.

func (*ResponseHeader) DisableNormalizing

func (h *ResponseHeader) DisableNormalizing()

DisableNormalizing disables header names' normalization.

By default all the header names are normalized by uppercasing the first letter and all the first letters following dashes, while lowercasing all the other letters. Examples:

* CONNECTION -> Connection
* conteNT-tYPE -> Content-Type
* foo-bar-baz -> Foo-Bar-Baz

Disable header names' normalization only if know what are you doing.

func (*ResponseHeader) Header

func (h *ResponseHeader) Header() []byte

Header returns response header representation.

The returned value is valid until the next call to ResponseHeader methods.

func (*ResponseHeader) IsHTTP11

func (h *ResponseHeader) IsHTTP11() bool

IsHTTP11 returns true if the response is HTTP/1.1.

func (*ResponseHeader) Len

func (h *ResponseHeader) Len() int

Len returns the number of headers set, i.e. the number of times f is called in VisitAll.

func (*ResponseHeader) Peek

func (h *ResponseHeader) Peek(key string) []byte

Peek returns header value for the given key.

Returned value is valid until the next call to ResponseHeader. Do not store references to returned value. Make copies instead.

func (*ResponseHeader) PeekBytes

func (h *ResponseHeader) PeekBytes(key []byte) []byte

PeekBytes returns header value for the given key.

Returned value is valid until the next call to ResponseHeader. Do not store references to returned value. Make copies instead.

func (*ResponseHeader) Read

func (h *ResponseHeader) Read(r *bufio.Reader) error

Read reads response header from r.

io.EOF is returned if r is closed before reading the first header byte.

func (*ResponseHeader) Reset

func (h *ResponseHeader) Reset()

Reset clears response header.

func (*ResponseHeader) ResetConnectionClose

func (h *ResponseHeader) ResetConnectionClose()

ResetConnectionClose clears 'Connection: close' header if it exists.

func (*ResponseHeader) Server

func (h *ResponseHeader) Server() []byte

Server returns Server header value.

func (*ResponseHeader) Set

func (h *ResponseHeader) Set(key, value string)

Set sets the given 'key: value' header.

func (*ResponseHeader) SetBytesK

func (h *ResponseHeader) SetBytesK(key []byte, value string)

SetBytesK sets the given 'key: value' header.

func (*ResponseHeader) SetBytesKV

func (h *ResponseHeader) SetBytesKV(key, value []byte)

SetBytesKV sets the given 'key: value' header.

func (*ResponseHeader) SetBytesV

func (h *ResponseHeader) SetBytesV(key string, value []byte)

SetBytesV sets the given 'key: value' header.

func (*ResponseHeader) SetCanonical

func (h *ResponseHeader) SetCanonical(key, value []byte)

SetCanonical sets the given 'key: value' header assuming that key is in canonical form.

func (*ResponseHeader) SetConnectionClose

func (h *ResponseHeader) SetConnectionClose()

SetConnectionClose sets 'Connection: close' header.

func (*ResponseHeader) SetContentLength

func (h *ResponseHeader) SetContentLength(contentLength int)

SetContentLength sets Content-Length header value.

Content-Length may be negative: -1 means Transfer-Encoding: chunked. -2 means Transfer-Encoding: identity.

func (*ResponseHeader) SetContentRange

func (h *ResponseHeader) SetContentRange(startPos, endPos, contentLength int)

SetContentRange sets 'Content-Range: bytes startPos-endPos/contentLength' header.

func (*ResponseHeader) SetContentType

func (h *ResponseHeader) SetContentType(contentType string)

SetContentType sets Content-Type header value.

func (*ResponseHeader) SetContentTypeBytes

func (h *ResponseHeader) SetContentTypeBytes(contentType []byte)

SetContentTypeBytes sets Content-Type header value.

func (*ResponseHeader) SetCookie

func (h *ResponseHeader) SetCookie(cookie *Cookie)

SetCookie sets the given response cookie.

func (*ResponseHeader) SetLastModified

func (h *ResponseHeader) SetLastModified(t time.Time)

SetLastModified sets 'Last-Modified' header to the given value.

func (*ResponseHeader) SetServer

func (h *ResponseHeader) SetServer(server string)

SetServer sets Server header value.

func (*ResponseHeader) SetServerBytes

func (h *ResponseHeader) SetServerBytes(server []byte)

SetServerBytes sets Server header value.

func (*ResponseHeader) SetStatusCode

func (h *ResponseHeader) SetStatusCode(statusCode int)

SetStatusCode sets response status code.

func (*ResponseHeader) StatusCode

func (h *ResponseHeader) StatusCode() int

StatusCode returns response status code.

func (*ResponseHeader) String

func (h *ResponseHeader) String() string

String returns response header representation.

func (*ResponseHeader) VisitAll

func (h *ResponseHeader) VisitAll(f func(key, value []byte))

VisitAll calls f for each header.

f must not retain references to key and/or value after returning. Copy key and/or value contents before returning if you need retaining them.

func (*ResponseHeader) VisitAllCookie

func (h *ResponseHeader) VisitAllCookie(f func(key, value []byte))

VisitAllCookie calls f for each response cookie.

Cookie name is passed in key and the whole Set-Cookie header value is passed in value on each f invocation. Value may be parsed with Cookie.ParseBytes().

f must not retain references to key and/or value after returning.

func (*ResponseHeader) Write

func (h *ResponseHeader) Write(w *bufio.Writer) error

Write writes response header to w.

func (*ResponseHeader) WriteTo

func (h *ResponseHeader) WriteTo(w io.Writer) (int64, error)

WriteTo writes response header to w.

WriteTo implements io.WriterTo interface.

type Server

type Server struct {

	// Handler for processing incoming requests.
	Handler RequestHandler

	// Server name for sending in response headers.
	//
	// Default server name is used if left blank.
	Name string

	// The maximum number of concurrent connections the server may serve.
	//
	// DefaultConcurrency is used if not set.
	Concurrency int

	// Whether to disable keep-alive connections.
	//
	// The server will close all the incoming connections after sending
	// the first response to client if this option is set to true.
	//
	// By default keep-alive connections are enabled.
	DisableKeepalive bool

	// Per-connection buffer size for requests' reading.
	// This also limits the maximum header size.
	//
	// Increase this buffer if your clients send multi-KB RequestURIs
	// and/or multi-KB headers (for example, BIG cookies).
	//
	// Default buffer size is used if not set.
	ReadBufferSize int

	// Per-connection buffer size for responses' writing.
	//
	// Default buffer size is used if not set.
	WriteBufferSize int

	// Maximum duration for reading the full request (including body).
	//
	// This also limits the maximum duration for idle keep-alive
	// connections.
	//
	// By default request read timeout is unlimited.
	ReadTimeout time.Duration

	// Maximum duration for writing the full response (including body).
	//
	// By default response write timeout is unlimited.
	WriteTimeout time.Duration

	// Maximum number of concurrent client connections allowed per IP.
	//
	// By default unlimited number of concurrent connections
	// may be established to the server from a single IP address.
	MaxConnsPerIP int

	// Maximum number of requests served per connection.
	//
	// The server closes connection after the last request.
	// 'Connection: close' header is added to the last response.
	//
	// By default unlimited number of requests may be served per connection.
	MaxRequestsPerConn int

	// Maximum keep-alive connection lifetime.
	//
	// The server closes keep-alive connection after its' lifetime
	// expiration.
	//
	// See also ReadTimeout for limiting the duration of idle keep-alive
	// connections.
	//
	// By default keep-alive connection lifetime is unlimited.
	MaxKeepaliveDuration time.Duration

	// Maximum request body size.
	//
	// The server rejects requests with bodies exceeding this limit.
	//
	// By default request body size is unlimited.
	MaxRequestBodySize int

	// Aggressively reduces memory usage at the cost of higher CPU usage
	// if set to true.
	//
	// Try enabling this option only if the server consumes too much memory
	// serving mostly idle keep-alive connections (more than 1M concurrent
	// connections). This may reduce memory usage by up to 50%.
	//
	// Aggressive memory usage reduction is disabled by default.
	ReduceMemoryUsage bool

	// Rejects all non-GET requests if set to true.
	//
	// This option is useful as anti-DoS protection for servers
	// accepting only GET requests. The request size is limited
	// by ReadBufferSize if GetOnly is set.
	//
	// Server accepts all the requests by default.
	GetOnly bool

	// Logs all errors, including the most frequent
	// 'connection reset by peer', 'broken pipe' and 'connection timeout'
	// errors. Such errors are common in production serving real-world
	// clients.
	//
	// By default the most frequent errors such as
	// 'connection reset by peer', 'broken pipe' and 'connection timeout'
	// are suppressed in order to limit output log traffic.
	LogAllErrors bool

	// Header names are passed as-is without normalization
	// if this option is set.
	//
	// Disabled header names' normalization may be useful only for proxying
	// incoming requests to other servers expecting case-sensitive
	// header names. See https://github.com/valyala/fasthttp/issues/57
	// for details.
	//
	// By default request and response header names are normalized, i.e.
	// The first letter and the first letters following dashes
	// are uppercased, while all the other letters are lowercased.
	// Examples:
	//
	//     * HOST -> Host
	//     * content-type -> Content-Type
	//     * cONTENT-lenGTH -> Content-Length
	DisableHeaderNamesNormalizing bool

	// Logger, which is used by RequestCtx.Logger().
	//
	// By default standard logger from log package is used.
	Logger Logger
	// contains filtered or unexported fields
}

Server implements HTTP server.

Default Server settings should satisfy the majority of Server users. Adjust Server settings only if you really understand the consequences.

It is forbidden copying Server instances. Create new Server instances instead.

It is safe to call Server methods from concurrently running goroutines.

func (*Server) ListenAndServe

func (s *Server) ListenAndServe(addr string) error

ListenAndServe serves HTTP requests from the given TCP4 addr.

Pass custom listener to Serve if you need listening on non-TCP4 media such as IPv6.

func (*Server) ListenAndServeTLS

func (s *Server) ListenAndServeTLS(addr, certFile, keyFile string) error

ListenAndServeTLS serves HTTPS requests from the given TCP4 addr.

certFile and keyFile are paths to TLS certificate and key files.

Pass custom listener to Serve if you need listening on non-TCP4 media such as IPv6.

func (*Server) ListenAndServeTLSEmbed

func (s *Server) ListenAndServeTLSEmbed(addr string, certData, keyData []byte) error

ListenAndServeTLSEmbed serves HTTPS requests from the given TCP4 addr.

certData and keyData must contain valid TLS certificate and key data.

Pass custom listener to Serve if you need listening on arbitrary media such as IPv6.

func (*Server) ListenAndServeUNIX

func (s *Server) ListenAndServeUNIX(addr string, mode os.FileMode) error

ListenAndServeUNIX serves HTTP requests from the given UNIX addr.

The function deletes existing file at addr before starting serving.

The server sets the given file mode for the UNIX addr.

func (*Server) Serve

func (s *Server) Serve(ln net.Listener) error

Serve serves incoming connections from the given listener.

Serve blocks until the given listener returns permanent error.

func (*Server) ServeConn

func (s *Server) ServeConn(c net.Conn) error

ServeConn serves HTTP requests from the given connection.

ServeConn returns nil if all requests from the c are successfully served. It returns non-nil error otherwise.

Connection c must immediately propagate all the data passed to Write() to the client. Otherwise requests' processing may hang.

ServeConn closes c before returning.

func (*Server) ServeTLS

func (s *Server) ServeTLS(ln net.Listener, certFile, keyFile string) error

ServeTLS serves HTTPS requests from the given listener.

certFile and keyFile are paths to TLS certificate and key files.

func (*Server) ServeTLSEmbed

func (s *Server) ServeTLSEmbed(ln net.Listener, certData, keyData []byte) error

ServeTLSEmbed serves HTTPS requests from the given listener.

certData and keyData must contain valid TLS certificate and key data.

type StreamWriter

type StreamWriter func(w *bufio.Writer)

StreamWriter must write data to w.

Usually StreamWriter writes data to w in a loop (aka 'data streaming').

StreamWriter must return immediately if w returns error.

Since the written data is buffered, do not forget calling w.Flush when the data must be propagated to reader.

type URI

type URI struct {
	// contains filtered or unexported fields
}

URI represents URI :) .

It is forbidden copying URI instances. Create new instance and use CopyTo instead.

URI instance MUST NOT be used from concurrently running goroutines.

func AcquireURI

func AcquireURI() *URI

AcquireURI returns an empty URI instance from the pool.

Release the URI with ReleaseURI after the URI is no longer needed. This allows reducing GC load.

func (*URI) AppendBytes

func (u *URI) AppendBytes(dst []byte) []byte

AppendBytes appends full uri to dst and returns the extended dst.

func (*URI) CopyTo

func (u *URI) CopyTo(dst *URI)

CopyTo copies uri contents to dst.

func (*URI) FullURI

func (u *URI) FullURI() []byte

FullURI returns full uri in the form {Scheme}://{Host}{RequestURI}#{Hash}.

func (*URI) Hash

func (u *URI) Hash() []byte

Hash returns URI hash, i.e. qwe of http://aaa.com/foo/bar?baz=123#qwe .

The returned value is valid until the next URI method call.

func (*URI) Host

func (u *URI) Host() []byte

Host returns host part, i.e. aaa.com of http://aaa.com/foo/bar?baz=123#qwe .

Host is always lowercased.

func (*URI) LastPathSegment

func (u *URI) LastPathSegment() []byte

LastPathSegment returns the last part of uri path after '/'.

Examples:

* For /foo/bar/baz.html path returns baz.html.
* For /foo/bar/ returns empty byte slice.
* For /foobar.js returns foobar.js.

func (*URI) Parse

func (u *URI) Parse(host, uri []byte)

Parse initializes URI from the given host and uri.

func (*URI) Path

func (u *URI) Path() []byte

Path returns URI path, i.e. /foo/bar of http://aaa.com/foo/bar?baz=123#qwe .

The returned path is always urldecoded and normalized, i.e. '//f%20obar/baz/../zzz' becomes '/f obar/zzz'.

The returned value is valid until the next URI method call.

func (*URI) PathOriginal

func (u *URI) PathOriginal() []byte

PathOriginal returns the original path from requestURI passed to URI.Parse().

The returned value is valid until the next URI method call.

func (*URI) QueryArgs

func (u *URI) QueryArgs() *Args

QueryArgs returns query args.

func (*URI) QueryString

func (u *URI) QueryString() []byte

QueryString returns URI query string, i.e. baz=123 of http://aaa.com/foo/bar?baz=123#qwe .

The returned value is valid until the next URI method call.

func (*URI) RequestURI

func (u *URI) RequestURI() []byte

RequestURI returns RequestURI - i.e. URI without Scheme and Host.

func (*URI) Reset

func (u *URI) Reset()

Reset clears uri.

func (*URI) Scheme

func (u *URI) Scheme() []byte

Scheme returns URI scheme, i.e. http of http://aaa.com/foo/bar?baz=123#qwe .

Returned scheme is always lowercased.

The returned value is valid until the next URI method call.

func (*URI) SetHash

func (u *URI) SetHash(hash string)

SetHash sets URI hash.

func (*URI) SetHashBytes

func (u *URI) SetHashBytes(hash []byte)

SetHashBytes sets URI hash.

func (*URI) SetHost

func (u *URI) SetHost(host string)

SetHost sets host for the uri.

func (*URI) SetHostBytes

func (u *URI) SetHostBytes(host []byte)

SetHostBytes sets host for the uri.

func (*URI) SetPath

func (u *URI) SetPath(path string)

SetPath sets URI path.

func (*URI) SetPathBytes

func (u *URI) SetPathBytes(path []byte)

SetPathBytes sets URI path.

func (*URI) SetQueryString

func (u *URI) SetQueryString(queryString string)

SetQueryString sets URI query string.

func (*URI) SetQueryStringBytes

func (u *URI) SetQueryStringBytes(queryString []byte)

SetQueryStringBytes sets URI query string.

func (*URI) SetScheme

func (u *URI) SetScheme(scheme string)

SetScheme sets URI scheme, i.e. http, https, ftp, etc.

func (*URI) SetSchemeBytes

func (u *URI) SetSchemeBytes(scheme []byte)

SetSchemeBytes sets URI scheme, i.e. http, https, ftp, etc.

func (*URI) String

func (u *URI) String() string

String returns full uri.

func (*URI) Update

func (u *URI) Update(newURI string)

Update updates uri.

The following newURI types are accepted:

* Absolute, i.e. http://foobar.com/aaa/bb?cc . In this case the original
  uri is replaced by newURI.
* Missing host, i.e. /aaa/bb?cc . In this case only RequestURI part
  of the original uri is replaced.
* Relative path, i.e.  xx?yy=abc . In this case the original RequestURI
  is updated according to the new relative path.

func (*URI) UpdateBytes

func (u *URI) UpdateBytes(newURI []byte)

UpdateBytes updates uri.

The following newURI types are accepted:

* Absolute, i.e. http://foobar.com/aaa/bb?cc . In this case the original
  uri is replaced by newURI.
* Missing host, i.e. /aaa/bb?cc . In this case only RequestURI part
  of the original uri is replaced.
* Relative path, i.e.  xx?yy=abc . In this case the original RequestURI
  is updated according to the new relative path.

func (*URI) WriteTo

func (u *URI) WriteTo(w io.Writer) (int64, error)

WriteTo writes full uri to w.

WriteTo implements io.WriterTo interface.

Directories

Path Synopsis
examples
fileserver
Example static file server.
Example static file server.
Package expvarhandler provides fasthttp-compatible request handler serving expvars.
Package expvarhandler provides fasthttp-compatible request handler serving expvars.
Package fasthttpadaptor provides helper functions for converting net/http request handlers to fasthttp request handlers.
Package fasthttpadaptor provides helper functions for converting net/http request handlers to fasthttp request handlers.
Package fasthttputil provides utility functions for fasthttp.
Package fasthttputil provides utility functions for fasthttp.
Package reuseport provides TCP net.Listener with SO_REUSEPORT support.
Package reuseport provides TCP net.Listener with SO_REUSEPORT support.

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