fhttp

Documentation

Index

• Constants
• Variables
• func ASCIIToUpper(str string) []byte
• func AddHTTPS(url string) string
• func CacheOn(w http.ResponseWriter)
• func DebugHandler(w http.ResponseWriter, r *http.Request)
• func DebugSummary(buf []byte, max int) string
• func DynamicHTTPServer(closing bool) (*http.ServeMux, *net.TCPAddr)
• func EchoHandler(w http.ResponseWriter, r *http.Request)
• func Fetch(httpOptions *HTTPOptions) (int, []byte)
• func FetchURL(url string) (int, []byte)
• func FetcherHandler(w http.ResponseWriter, r *http.Request)
• func FoldFind(haystack []byte, needle []byte) (bool, int)
• func HTTPServer(name string, port string) (*http.ServeMux, net.Addr)
• func LogAndCall(msg string, hf http.HandlerFunc) http.HandlerFunc
• func LogAndCallNoArg(msg string, f func()) http.HandlerFunc
• func LogRequest(r *http.Request, msg string)
• func MultiServer(port string, cfg *MultiServerConfig) (*http.ServeMux, net.Addr)
• func NewHTMLEscapeWriter(w io.Writer) io.Writer
• func OnBehalfOf(o *HTTPOptions, r *http.Request)
• func ParseChunkSize(inp []byte) (int, int)
• func ParseDecimal(inp []byte) int
• func RedirectToHTTPS(port string) net.Addr
• func RedirectToHTTPSHandler(w http.ResponseWriter, r *http.Request)
• func RoundDuration(d time.Duration) time.Duration
• func Serve(port, debugPath string) (*http.ServeMux, net.Addr)
• func ServeTCP(port, debugPath string) (*http.ServeMux, *net.TCPAddr)
• func SetupPPROF(mux *http.ServeMux)
• type Client
  • func NewStdClient(o *HTTPOptions) (*Client, error)
  • func (c *Client) ChangeURL(urlStr string) (err error)
  • func (c *Client) Close() int
  • func (c *Client) Fetch() (int, []byte, int)
• type FastClient
  • func (c *FastClient) Close() int
  • func (c *FastClient) Fetch() (int, []byte, int)
• type Fetcher
  • func NewClient(o *HTTPOptions) (Fetcher, error)
  • func NewFastClient(o *HTTPOptions) (Fetcher, error)
• type HTMLEscapeWriter
  • func (w *HTMLEscapeWriter) Write(p []byte) (int, error)
• type HTTPOptions
  • func NewHTTPOptions(url string) *HTTPOptions
  • func (h *HTTPOptions) AddAndValidateExtraHeader(hdr string) error
  • func (h *HTTPOptions) AllHeaders() http.Header
  • func (h *HTTPOptions) GenerateHeaders() http.Header
  • func (h *HTTPOptions) Init(url string) *HTTPOptions
  • func (h *HTTPOptions) InitHeaders()
  • func (h *HTTPOptions) Method() string
  • func (h *HTTPOptions) PayloadString() string
  • func (h *HTTPOptions) ResetHeaders()
  • func (h *HTTPOptions) URLSchemeCheck()
  • func (h *HTTPOptions) ValidateAndAddBasicAuthentication(headers http.Header) error
• type HTTPRunnerOptions
• type HTTPRunnerResults
  • func RunHTTPTest(o *HTTPRunnerOptions) (*HTTPRunnerResults, error)
  • func (httpstate *HTTPRunnerResults) Run(t int)
• type MultiServerConfig
  • func (mcfg *MultiServerConfig) TeeHandler(w http.ResponseWriter, r *http.Request)
  • func (mcfg *MultiServerConfig) TeeParallelHandler(w http.ResponseWriter, r *http.Request, data []byte)
  • func (mcfg *MultiServerConfig) TeeSerialHandler(w http.ResponseWriter, r *http.Request, data []byte)
• type TargetConf

Constants

const (
	// SocketError is return when a transport error occurred: unexpected EOF, connection error, etc...
	SocketError = -1
	// RetryOnce is used internally as an error code to allow 1 retry for bad socket reuse.
	RetryOnce = -2
)

Extra error codes outside of the HTTP Status code ranges. ie negative.

const (

	// HTTPReqTimeOutDefaultValue is the default timeout value. 15s.
	HTTPReqTimeOutDefaultValue = 15 * time.Second
)

Variables

var (
	// BufferSizeKb size of the buffer (max data) for optimized client in kilobytes defaults to 128k.
	BufferSizeKb = 128
	// CheckConnectionClosedHeader indicates whether to check for server side connection closed headers.
	CheckConnectionClosedHeader = false
)

var (
	// EnvoyRequestID is the header set by envoy and we need to propagate for distributed tracing.
	EnvoyRequestID = textproto.CanonicalMIMEHeaderKey("x-request-id")
	// TraceHeader is the single aggregated open tracing header to propagate when present.
	TraceHeader = textproto.CanonicalMIMEHeaderKey("b3")
	// TraceHeadersPrefix is the prefix for the multi header version of open zipkin.
	TraceHeadersPrefix = textproto.CanonicalMIMEHeaderKey("x-b3-")
)

var (

	// EchoRequests is the number of request received. Only updated in Debug mode.
	EchoRequests int64
)

var MaxDelay = dflag.DynDuration(flag.CommandLine, "max-echo-delay", 1500*time.Millisecond,
	"Maximum sleep time for delay= echo server parameter. dynamic flag.")

MaxDelay is the maximum delay allowed for the echoserver responses. It is a dynamic flag with default value of 1.5s so we can test the default 1s timeout in envoy.

Functions

func ASCIIToUpper

func ASCIIToUpper(str string) []byte

ASCIIToUpper returns a byte array equal to the input string but in lowercase. Only works for ASCII, not meant for unicode.

func AddHTTPS

func AddHTTPS(url string) string

AddHTTPS replaces "http://" in url with "https://" or prepends "https://" if url does not contain prefix "http://".

func CacheOn

func CacheOn(w http.ResponseWriter)

CacheOn sets the header for indefinite caching.

func DebugHandler

func DebugHandler(w http.ResponseWriter, r *http.Request)

DebugHandler returns debug/useful info to http client.

func DebugSummary

func DebugSummary(buf []byte, max int) string

DebugSummary returns a string with the size and escaped first max/2 and last max/2 bytes of a buffer (or the whole escaped buffer if small enough).

func DynamicHTTPServer

func DynamicHTTPServer(closing bool) (*http.ServeMux, *net.TCPAddr)

DynamicHTTPServer listens on an available port, sets up an http or a closing server simulating an https server (when closing is true) server on it and returns the listening port and mux to which one can attach handlers to. Note: in a future version of istio, the closing will be actually be secure on/off and create an https server instead of a closing server. As this is a dynamic tcp socket server, the address is TCP.

func EchoHandler

func EchoHandler(w http.ResponseWriter, r *http.Request)

EchoHandler is an http server handler echoing back the input.

func Fetch

func Fetch(httpOptions *HTTPOptions) (int, []byte)

Fetch creates a client an performs a fetch according to the http options passed in. To be used only for single fetches or when performance doesn't matter as the client is closed at the end.

func FetchURL

func FetchURL(url string) (int, []byte)

FetchURL fetches the data at the given url using the standard client and default options. Returns the http status code (http.StatusOK == 200 for success) and the data. To be used only for single fetches or when performance doesn't matter as the client is closed at the end.

func FetcherHandler

func FetcherHandler(w http.ResponseWriter, r *http.Request)

FetcherHandler is the handler for the fetcher/proxy.

func FoldFind

func FoldFind(haystack []byte, needle []byte) (bool, int)

FoldFind searches the bytes assuming ascii, ignoring the lowercase bit for testing. Not intended to work with unicode, meant for http headers and to be fast (see benchmark in test file).

func HTTPServer

func HTTPServer(name string, port string) (*http.ServeMux, net.Addr)

HTTPServer creates an http server named name on address/port port. Port can include binding address and/or be port 0.

func LogAndCall

func LogAndCall(msg string, hf http.HandlerFunc) http.HandlerFunc

LogAndCall wrapps an HTTP handler to log the request first.

func LogAndCallNoArg

func LogAndCallNoArg(msg string, f func()) http.HandlerFunc

LogAndCallNoArg is LogAndCall for functions not needing the response/request args.

func LogRequest

func LogRequest(r *http.Request, msg string)

LogRequest logs the incoming request, including headers when loglevel is verbose.

func MultiServer

func MultiServer(port string, cfg *MultiServerConfig) (*http.ServeMux, net.Addr)

MultiServer starts fan out http server on the given port. Returns the mux and addr where the listening socket is bound. The port can be retrieved from it when requesting the 0 port as input for dynamic http server.

func NewHTMLEscapeWriter

func NewHTMLEscapeWriter(w io.Writer) io.Writer

NewHTMLEscapeWriter creates a io.Writer that can safely output to an http.ResponseWrite with HTMLEscape-ing.

func OnBehalfOf

func OnBehalfOf(o *HTTPOptions, r *http.Request)

OnBehalfOf adds a header with the remote addr to an http options object.

func ParseChunkSize

func ParseChunkSize(inp []byte) (int, int)

ParseChunkSize extracts the chunk size and consumes the line. Returns the offset of the data and the size of the chunk, 0, -1 when not found.

func ParseDecimal

func ParseDecimal(inp []byte) int

ParseDecimal extracts the first positive integer number from the input. spaces are ignored. any character that isn't a digit cause the parsing to stop.

func RedirectToHTTPS

func RedirectToHTTPS(port string) net.Addr

RedirectToHTTPS Sets up a redirector to https on the given port. (Do not create a loop, make sure this is addressed from an ingress).

func RedirectToHTTPSHandler

func RedirectToHTTPSHandler(w http.ResponseWriter, r *http.Request)

RedirectToHTTPSHandler handler sends a redirect to same URL with https.

func RoundDuration

func RoundDuration(d time.Duration) time.Duration

RoundDuration rounds to 10th of second.

func Serve

func Serve(port, debugPath string) (*http.ServeMux, net.Addr)

Serve starts a debug / echo http server on the given port. Returns the mux and addr where the listening socket is bound. The .Port can be retrieved from it when requesting the 0 port as input for dynamic http server.

func ServeTCP

func ServeTCP(port, debugPath string) (*http.ServeMux, *net.TCPAddr)

ServeTCP is Serve() but restricted to TCP (return address is assumed to be TCP - will panic for unix domain).

func SetupPPROF

func SetupPPROF(mux *http.ServeMux)

SetupPPROF add pprof to the mux (mirror the init() of http pprof).

Types

type Client

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

Client object for making repeated requests of the same URL using the same http client (net/http).

func NewStdClient

func NewStdClient(o *HTTPOptions) (*Client, error)

NewStdClient creates a client object that wraps the net/http standard client.

func (*Client) ChangeURL

func (c *Client) ChangeURL(urlStr string) (err error)

ChangeURL only for standard client, allows fetching a different URL.

func (*Client) Close

func (c *Client) Close() int

Close cleans up any resources used by NewStdClient.

func (*Client) Fetch

func (c *Client) Fetch() (int, []byte, int)

Fetch fetches the byte and code for pre created client.

type FastClient

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

FastClient is a fast, lockfree single purpose http 1.0/1.1 client.

func (*FastClient) Close

func (c *FastClient) Close() int

Close cleans up any resources used by FastClient.

func (*FastClient) Fetch

func (c *FastClient) Fetch() (int, []byte, int)

Fetch fetches the url content. Returns http code, data, offset of body.

type Fetcher

type Fetcher interface {
	// Fetch returns http code, data, offset of body (for client which returns
	// headers)
	Fetch() (int, []byte, int)
	// Close() cleans up connections and state - must be paired with NewClient calls.
	// returns how many sockets have been used (Fastclient only)
	Close() int
}

Fetcher is the Url content fetcher that the different client implements.

func NewClient

func NewClient(o *HTTPOptions) (Fetcher, error)

NewClient creates either a standard or fast client (depending on the DisableFastClient flag).

func NewFastClient

func NewFastClient(o *HTTPOptions) (Fetcher, error)

NewFastClient makes a basic, efficient http 1.0/1.1 client. This function itself doesn't need to be super efficient as it is created at the beginning and then reused many times.

type HTMLEscapeWriter

type HTMLEscapeWriter struct {
	NextWriter io.Writer
	Flusher    http.Flusher
}

HTMLEscapeWriter is an io.Writer escaping the output for safe html inclusion.

func (*HTMLEscapeWriter) Write

func (w *HTMLEscapeWriter) Write(p []byte) (int, error)

type HTTPOptions

type HTTPOptions struct {
	URL               string
	NumConnections    int  // num connections (for std client)
	Compression       bool // defaults to no compression, only used by std client
	DisableFastClient bool // defaults to fast client
	HTTP10            bool // defaults to http1.1
	DisableKeepAlive  bool // so default is keep alive
	AllowHalfClose    bool // if not keepalive, whether to half close after request
	Insecure          bool // do not verify certs for https
	FollowRedirects   bool // For the Std Client only: follow redirects.

	Resolve string // resolve Common Name to this ip when use CN as target url

	HTTPReqTimeOut time.Duration // timeout value for http request

	UserCredentials string // user credentials for authorization
	ContentType     string // indicates request body type, implies POST instead of GET
	Payload         []byte // body for http request, implies POST if not empty.

	UnixDomainSocket string // Path of unix domain socket to use instead of host:port from URL
	// contains filtered or unexported fields
}

HTTPOptions holds the common options of both http clients and the headers.

func NewHTTPOptions

func NewHTTPOptions(url string) *HTTPOptions

NewHTTPOptions creates and initialize a HTTPOptions object. It replaces plain % to %25 in the url. If you already have properly escaped URLs use o.URL = to set it.

func (*HTTPOptions) AddAndValidateExtraHeader

func (h *HTTPOptions) AddAndValidateExtraHeader(hdr string) error

AddAndValidateExtraHeader collects extra headers (see commonflags.go for example).

func (*HTTPOptions) AllHeaders

func (h *HTTPOptions) AllHeaders() http.Header

AllHeaders returns the current set of headers including virtual/special Host header.

func (*HTTPOptions) GenerateHeaders

func (h *HTTPOptions) GenerateHeaders() http.Header

GenerateHeaders completes the header generation, including Content-Type/Length and user credential coming from the http options in addition to extra headers coming from flags and AddAndValidateExtraHeader(). Warning this gets called more than once, do not generate duplicate headers.

func (*HTTPOptions) Init

func (h *HTTPOptions) Init(url string) *HTTPOptions

Init initializes the headers in an HTTPOptions (User-Agent).

func (*HTTPOptions) InitHeaders

func (h *HTTPOptions) InitHeaders()

InitHeaders initialize and/or resets the default headers (ie just User-Agent).

func (*HTTPOptions) Method

func (h *HTTPOptions) Method() string

Method returns the method of the http req.

func (*HTTPOptions) PayloadString

func (h *HTTPOptions) PayloadString() string

PayloadString returns the payload as a string. If payload is null return empty string This is only needed due to grpc ping proto. It takes string instead of byte array.

func (*HTTPOptions) ResetHeaders

func (h *HTTPOptions) ResetHeaders()

ResetHeaders resets all the headers, including the User-Agent: one (and the Host: logical special header). This is used from the UI as the user agent is settable from the form UI.

func (*HTTPOptions) URLSchemeCheck

func (h *HTTPOptions) URLSchemeCheck()

URLSchemeCheck makes sure the client will work with the scheme requested. it also adds missing http:// to emulate curl's behavior.

func (*HTTPOptions) ValidateAndAddBasicAuthentication

func (h *HTTPOptions) ValidateAndAddBasicAuthentication(headers http.Header) error

ValidateAndAddBasicAuthentication validates user credentials and adds basic authentication to http header, if user credentials are valid.

type HTTPRunnerOptions

type HTTPRunnerOptions struct {
	periodic.RunnerOptions
	HTTPOptions               // Need to call Init() to initialize
	Profiler           string // file to save profiles to. defaults to no profiling
	AllowInitialErrors bool   // whether initial errors don't cause an abort
	// Which status code cause an abort of the run (default 0 = don't abort; reminder -1 is returned for socket errors)
	AbortOn int
}

HTTPRunnerOptions includes the base RunnerOptions plus http specific options.

type HTTPRunnerResults

type HTTPRunnerResults struct {
	periodic.RunnerResults

	RetCodes map[int]int64

	// exported result
	Sizes       *stats.HistogramData
	HeaderSizes *stats.HistogramData
	URL         string
	SocketCount int
	// http code to abort the run on (-1 for connection or other socket error)
	AbortOn int
	// contains filtered or unexported fields
}

HTTPRunnerResults is the aggregated result of an HTTPRunner. Also is the internal type used per thread/goroutine.

func RunHTTPTest

func RunHTTPTest(o *HTTPRunnerOptions) (*HTTPRunnerResults, error)

RunHTTPTest runs an http test and returns the aggregated stats. nolint: funlen

func (*HTTPRunnerResults) Run

func (httpstate *HTTPRunnerResults) Run(t int)

Run tests http request fetching. Main call being run at the target QPS. To be set as the Function in RunnerOptions.

type MultiServerConfig

type MultiServerConfig struct {
	Targets []TargetConf
	Serial  bool // Serialize or parallel queries
	//	Javascript bool // return data as UI suitable
	Name string
	// contains filtered or unexported fields
}

MultiServerConfig configures the MultiServer and holds the http client it uses for proxying.

func (*MultiServerConfig) TeeHandler

func (mcfg *MultiServerConfig) TeeHandler(w http.ResponseWriter, r *http.Request)

TeeHandler common part between TeeSerialHandler and TeeParallelHandler.

func (*MultiServerConfig) TeeParallelHandler

func (mcfg *MultiServerConfig) TeeParallelHandler(w http.ResponseWriter, r *http.Request, data []byte)

TeeParallelHandler handles teeing off traffic in parallel (one goroutine each) mode.

func (*MultiServerConfig) TeeSerialHandler

func (mcfg *MultiServerConfig) TeeSerialHandler(w http.ResponseWriter, r *http.Request, data []byte)

TeeSerialHandler handles teeing off traffic in serial (one at a time) mode.

type TargetConf

type TargetConf struct {
	Destination  string // Destination URL or base
	MirrorOrigin bool   // wether to use the incoming request as URI and data params to outgoing one (proxy like)

}

TargetConf is the structure to configure one of the multiple targets for MultiServer.