treemux

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README

treemux - fast and flexible HTTP router

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High-speed, flexible, tree-based HTTP router for Go. It is like Julien Schmidt's httprouter, but supports more flexible routing.

Installing with Go Modules

When using Go Modules, import this repository with import "github.com/vmihailenco/treemux" to ensure that you get the right version.

Handler

The handler is a simple function with the prototype func(w http.ResponseWriter, req treemux.Request) error. A treemux.Request contains route name and parameters parsed from wildcards and catch-alls in the URL. This type is aliased as treemux.HandlerFunc.

import "github.com/vmihailenco/treemux"

router := treemux.New()

group := router.NewGroup("/api/v1")

group.GET("/:id", func(w http.ResponseWriter, req treemux.Request) error {
    id := req.Param("id")
    return treemux.JSON(w, treemux.H{
        "url": fmt.Sprintf("GET /api/v1/%s", id),
        "route": req.Route(),
    })
})

log.Println(http.ListenAndServe(":8080", router))

treemux supports centralized handling of errors returned by handlers:

router.ErrorHandler = func(w http.ResponseWriter, req treemux.Request, err error) {
    w.WriteHeader(500)
    _ = treemux.JSON(w, treemux.H{
        "message": "Internal Server Error",
    })
}

Middlewares

Middleware is a function that wraps a handler with another function:

func corsMiddleware(next treemux.HandlerFunc) treemux.HandlerFunc {
    return func(w http.ResponseWriter, req treemux.Request) error {
        if origin := req.Header.Get("Origin"); origin != "" {
            h := w.Header()
            h.Set("Access-Control-Allow-Origin", origin)
            h.Set("Access-Control-Allow-Credentials", "true")
        }
        return next(w, req)
    }
}

router.Use(corsMiddleware)

Routing Rules

The syntax here is modeled after httprouter. Each variable in a path may match on one segment only, except for an optional catch-all variable at the end of the URL.

Some examples of valid URL patterns are:

  • /post/all
  • /post/:postid
  • /post/:postid/page/:page
  • /post/:postid/:page
  • /images/*path
  • /favicon.ico
  • /:year/:month/
  • /:year/:month/:post
  • /:page

Note that all of the above URL patterns may exist concurrently in the router.

Path elements starting with : indicate a wildcard in the path. A wildcard will only match on a single path segment. That is, the pattern /post/:postid will match on /post/1 or /post/1/, but not /post/1/2.

A path element starting with * is a catch-all, whose value will be a string containing all text in the URL matched by the wildcards. For example, with a pattern of /images/*path and a requested URL images/abc/def, path would contain abc/def. A catch-all path will not match an empty string, so in this example a separate route would need to be installed if you also want to match /images/.

Using : and * in routing patterns

The characters : and * can be used at the beginning of a path segment by escaping them with a backslash. A double backslash at the beginning of a segment is interpreted as a single backslash. These escapes are only checked at the very beginning of a path segment; they are not necessary or processed elsewhere in a token.

router.GET("/foo/\\*starToken", handler) // matches /foo/*starToken
router.GET("/foo/star*inTheMiddle", handler) // matches /foo/star*inTheMiddle
router.GET("/foo/starBackslash\\*", handler) // matches /foo/starBackslash\*
router.GET("/foo/\\\\*backslashWithStar") // matches /foo/\*backslashWithStar
Routing Groups

Lets you create a new group of routes with a given path prefix. Makes it easier to create clusters of paths like:

  • /api/v1/foo
  • /api/v1/bar

To use this you do:

router = treemux.New()
api := router.NewGroup("/api/v1")
api.GET("/foo", fooHandler) // becomes /api/v1/foo
api.GET("/bar", barHandler) // becomes /api/v1/bar

Or using WithGroup:

router.WithGroup("/api/v1", func(g *treemux.Group) {
    g.GET("/foo", fooHandler) // becomes /api/v1/foo
    g.GET("/bar", barHandler) // becomes /api/v1/bar
})
Routing Priority

The priority rules in the router are simple.

  1. Static path segments take the highest priority. If a segment and its subtree are able to match the URL, that match is returned.
  2. Wildcards take second priority. For a particular wildcard to match, that wildcard and its subtree must match the URL.
  3. Finally, a catch-all rule will match when the earlier path segments have matched, and none of the static or wildcard conditions have matched. Catch-all rules must be at the end of a pattern.

So with the following patterns adapted from simpleblog, we'll see certain matches:

router = treemux.New()
router.GET("/:page", pageHandler)
router.GET("/:year/:month/:post", postHandler)
router.GET("/:year/:month", archiveHandler)
router.GET("/images/*path", staticHandler)
router.GET("/favicon.ico", staticHandler)
Example scenarios
  • /abc will match /:page
  • /2014/05 will match /:year/:month
  • /2014/05/really-great-blog-post will match /:year/:month/:post
  • /images/CoolImage.gif will match /images/*path
  • /images/2014/05/MayImage.jpg will also match /images/*path, with all the text after /images stored in the variable path.
  • /favicon.ico will match /favicon.ico
Special Method Behavior

If TreeMux.HeadCanUseGet is set to true, the router will call the GET handler for a pattern when a HEAD request is processed, if no HEAD handler has been added for that pattern. This behavior is enabled by default.

Go's http.ServeContent and related functions already handle the HEAD method correctly by sending only the header, so in most cases your handlers will not need any special cases for it.

By default TreeMux.OptionsHandler is a null handler that doesn't affect your routing. If you set the handler, it will be called on OPTIONS requests to a path already registered by another method. If you set a path specific handler by using router.OPTIONS, it will override the global Options Handler for that path.

Trailing Slashes

The router has special handling for paths with trailing slashes. If a pattern is added to the router with a trailing slash, any matches on that pattern without a trailing slash will be redirected to the version with the slash. If a pattern does not have a trailing slash, matches on that pattern with a trailing slash will be redirected to the version without.

The trailing slash flag is only stored once for a pattern. That is, if a pattern is added for a method with a trailing slash, all other methods for that pattern will also be considered to have a trailing slash, regardless of whether or not it is specified for those methods too. However this behavior can be turned off by setting TreeMux.RedirectTrailingSlash to false. By default it is set to true.

One exception to this rule is catch-all patterns. By default, trailing slash redirection is disabled on catch-all patterns, since the structure of the entire URL and the desired patterns can not be predicted. If trailing slash removal is desired on catch-all patterns, set TreeMux.RemoveCatchAllTrailingSlash to true.

router = treemux.New()
router.GET("/about", pageHandler)
router.GET("/posts/", postIndexHandler)
router.POST("/posts", postFormHandler)

GET /about will match normally.
GET /about/ will redirect to /about.
GET /posts will redirect to /posts/.
GET /posts/ will match normally.
POST /posts will redirect to /posts/, because the GET method used a trailing slash.
Custom Redirects

RedirectBehavior sets the behavior when the router redirects the request to the canonical version of the requested URL using RedirectTrailingSlash or RedirectClean. The default behavior is to return a 301 status, redirecting the browser to the version of the URL that matches the given pattern.

These are the values accepted for RedirectBehavior. You may also add these values to the RedirectMethodBehavior map to define custom per-method redirect behavior.

  • Redirect301 - HTTP 301 Moved Permanently; this is the default.
  • Redirect307 - HTTP/1.1 Temporary Redirect
  • Redirect308 - RFC7538 Permanent Redirect
  • UseHandler - Don't redirect to the canonical path. Just call the handler instead.
Rationale/Usage

On a POST request, most browsers that receive a 301 will submit a GET request to the redirected URL, meaning that any data will likely be lost. If you want to handle and avoid this behavior, you may use Redirect307, which causes most browsers to resubmit the request using the original method and request body.

Since 307 is supposed to be a temporary redirect, the new 308 status code has been proposed, which is treated the same, except it indicates correctly that the redirection is permanent. The big caveat here is that the RFC is relatively recent, and older or non-compliant browsers will not handle it. Therefore its use is not recommended unless you really know what you're doing.

Finally, the UseHandler value will simply call the handler function for the pattern, without redirecting to the canonical version of the URL.

RequestURI vs. URL.Path
Escaped Slashes

Go automatically processes escaped characters in a URL, converting + to a space and %XX to the corresponding character. This can present issues when the URL contains a %2f, which is unescaped to '/'. This isn't an issue for most applications, but it will prevent the router from correctly matching paths and wildcards.

For example, the pattern /post/:post would not match on /post/abc%2fdef, which is unescaped to /post/abc/def. The desired behavior is that it matches, and the post wildcard is set to abc/def.

Therefore, this router defaults to using the raw URL, stored in the Request.RequestURI variable. Matching wildcards and catch-alls are then unescaped, to give the desired behavior.

TL;DR: If a requested URL contains a %2f, this router will still do the right thing. Some Go HTTP routers may not due to Go issue 3659.

Escaped Characters

As mentioned above, characters in the URL are not unescaped when using RequestURI to determine the matched route. If this is a problem for you and you are unable to switch to URL.Path for the above reasons, you may set router.EscapeAddedRoutes to true. This option will run each added route through the URL.EscapedPath function, and add an additional route if the escaped version differs.

http Package Utility Functions

Although using RequestURI avoids the issue described above, certain utility functions such as http.StripPrefix modify URL.Path, and expect that the underlying router is using that field to make its decision. If you are using some of these functions, set the router's PathSource member to URLPath. This will give up the proper handling of escaped slashes described above, while allowing the router to work properly with these utility functions.

Concurrency

The router contains an RWMutex that arbitrates access to the tree. This allows routes to be safely added from multiple goroutines at once.

No concurrency controls are needed when only reading from the tree, so the default behavior is to not use the RWMutex when serving a request. This avoids a theoretical slowdown under high-usage scenarios from competing atomic integer operations inside the RWMutex. If your application adds routes to the router after it has begun serving requests, you should avoid potential race conditions by setting router.SafeAddRoutesWhileRunning to true to use the RWMutex when serving requests.

Error Handlers

ErrorHandler

To handle errors returned by handlers, use TreeMux.ErrorHandler:

router.ErrorHandler = func(w http.ResponseWriter, req treemux.Request, err error) {
    w.WriteHeader(500)
    _, _ = w.Write([]byte("Internal Server Error"))
}
NotFoundHandler

TreeMux.NotFoundHandler can be set to provide custom 404-error handling. The default implementation is Go's http.NotFound function.

MethodNotAllowedHandler

If a pattern matches, but the pattern does not have an associated handler for the requested method, the router calls the MethodNotAllowedHandler. The default version of this handler just writes the status code http.StatusMethodNotAllowed and sets the response header's Allowed field appropriately.

Unexpected Differences from Other Routers

This router is intentionally light on features in the name of simplicity and performance. When coming from another router that does heavier processing behind the scenes, you may encounter some unexpected behavior. This list is by no means exhaustive, but covers some nonobvious cases that users have encountered.

httprouter and catch-all parameters

When using httprouter, a route with a catch-all parameter (e.g. /images/*path) will match on URLs like /images/ where the catch-all parameter is empty. This router does not match on empty catch-all parameters, but the behavior can be duplicated by adding a route without the catch-all (e.g. /images/).

httptreemux

This is a fork of httptreemux. Most of the code is written by Daniel Imfeld.

Changes from httptreemux

  • Thin wrapper treemux.Request around http.Request to expose route via Request.Route and route params via req.Params.

  • Setting a context.Context does not require an allocation.

  • Centralized error handling. Each handler returns an error which is handled by global TreeMux.ErrorHandler func.

router.GET("/posts/:id", func(w http.ResponseWriter, req treemux.Request) error {
    id, err := req.Params.Uint64("id")
    if err != nil {
        return err
    }

    _, err = fmt.Fprintf(w, "hello %d", id)
    return err
})

router.ErrorHandler = func(w http.ResponseWriter, req treemux.Request, err error) {
    _, _ = w.Write([]byte(err.Error()))
}

  • More efficient params encoding using a slice instead of a map.

  • Group can be locked before sharing to avoid accidental leaking of middlewares into the group.

Documentation

Overview

This is inspired by Julien Schmidt's httprouter, in that it uses a patricia tree, but the implementation is rather different. Specifically, the routing rules are relaxed so that a single path segment may be a wildcard in one route and a static token in another. This gives a nice combination of high performance with a lot of convenience in designing the routing patterns.

Index

Constants

View Source 
const (
	Redirect301 RedirectBehavior = iota // Return 301 Moved Permanently
	Redirect307                         // Return 307 HTTP/1.1 Temporary Redirect
	Redirect308                         // Return a 308 RFC7538 Permanent Redirect
	UseHandler                          // Just call the handler function

	RequestURI PathSource = iota // Use r.RequestURI
	URLPath                      // Use r.URL.Path
)

Variables

This section is empty.

Functions

func Clean 

func Clean(p string) string

Clean is the URL version of path.Clean, it returns a canonical URL path for p, eliminating . and .. elements.

The following rules are applied iteratively until no further processing can be done:

  1. Replace multiple slashes with a single slash.
  2. Eliminate each . path name element (the current directory).
  3. Eliminate each inner .. path name element (the parent directory) along with the non-.. element that precedes it.
  4. Eliminate .. elements that begin a rooted path: that is, replace "/.." by "/" at the beginning of a path.

If the result of this process is an empty string, "/" is returned

func JSON added in v0.1.1 

func JSON(w http.ResponseWriter, value H) error

JSON marshals the value as JSON and writes it to the response writer. Don't hesitate to copy-paste this function to your project and customize it as necessary.

func MethodNotAllowedHandler 

func MethodNotAllowedHandler(w http.ResponseWriter, r *http.Request,
	methods map[string]HandlerFunc)

MethodNotAllowedHandler is the default handler for TreeMux.MethodNotAllowedHandler, which is called for patterns that match, but do not have a handler installed for the requested method. It simply writes the status code http.StatusMethodNotAllowed and fills in the `Allow` header value appropriately.

Types

type Group 

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

Group is a group of routes and middlewares.

func (*Group) DELETE 

func (g *Group) DELETE(path string, handler HandlerFunc)

Syntactic sugar for Handle("DELETE", path, handler)

func (*Group) GET 

func (g *Group) GET(path string, handler HandlerFunc)

Syntactic sugar for Handle("GET", path, handler)

func (*Group) HEAD 

func (g *Group) HEAD(path string, handler HandlerFunc)

Syntactic sugar for Handle("HEAD", path, handler)

func (*Group) Handle 

func (g *Group) Handle(method string, path string, handler HandlerFunc)

Path elements starting with : indicate a wildcard in the path. A wildcard will only match on a single path segment. That is, the pattern `/post/:postid` will match on `/post/1` or `/post/1/`, but not `/post/1/2`.

A path element starting with * is a catch-all, whose value will be a string containing all text in the URL matched by the wildcards. For example, with a pattern of `/images/*path` and a requested URL `images/abc/def`, path would contain `abc/def`.

Routing Rule Priority

The priority rules in the router are simple.

1. Static path segments take the highest priority. If a segment and its subtree are able to match the URL, that match is returned.

2. Wildcards take second priority. For a particular wildcard to match, that wildcard and its subtree must match the URL.

3. Finally, a catch-all rule will match when the earlier path segments have matched, and none of the static or wildcard conditions have matched. Catch-all rules must be at the end of a pattern.

So with the following patterns, we'll see certain matches: 

router = treemux.New()
router.GET("/:page", pageHandler)
router.GET("/:year/:month/:post", postHandler)
router.GET("/:year/:month", archiveHandler)
router.GET("/images/*path", staticHandler)
router.GET("/favicon.ico", staticHandler)

/abc will match /:page
/2014/05 will match /:year/:month
/2014/05/really-great-blog-post will match /:year/:month/:post
/images/CoolImage.gif will match /images/*path
/images/2014/05/MayImage.jpg will also match /images/*path, with all the text after /images stored in the variable path.
/favicon.ico will match /favicon.ico

Trailing Slashes

The router has special handling for paths with trailing slashes. If a pattern is added to the router with a trailing slash, any matches on that pattern without a trailing slash will be redirected to the version with the slash. If a pattern does not have a trailing slash, matches on that pattern with a trailing slash will be redirected to the version without.

The trailing slash flag is only stored once for a pattern. That is, if a pattern is added for a method with a trailing slash, all other methods for that pattern will also be considered to have a trailing slash, regardless of whether or not it is specified for those methods too.

This behavior can be turned off by setting TreeMux.RedirectTrailingSlash to false. By default it is set to true. The specifics of the redirect depend on RedirectBehavior.

One exception to this rule is catch-all patterns. By default, trailing slash redirection is disabled on catch-all patterns, since the structure of the entire URL and the desired patterns can not be predicted. If trailing slash removal is desired on catch-all patterns, set TreeMux.RemoveCatchAllTrailingSlash to true. 

router = treemux.New()
router.GET("/about", pageHandler)
router.GET("/posts/", postIndexHandler)
router.POST("/posts", postFormHandler)

GET /about will match normally.
GET /about/ will redirect to /about.
GET /posts will redirect to /posts/.
GET /posts/ will match normally.
POST /posts will redirect to /posts/, because the GET method used a trailing slash.

func (*Group) Lock 

func (g *Group) Lock() *LockedGroup

Lock returns a locked group that does not allow mutating the original group.

func (*Group) NewGroup 

func (g *Group) NewGroup(path string) *Group

NewGroup adds a sub-group to this group.

func (*Group) OPTIONS 

func (g *Group) OPTIONS(path string, handler HandlerFunc)

Syntactic sugar for Handle("OPTIONS", path, handler)

func (*Group) PATCH 

func (g *Group) PATCH(path string, handler HandlerFunc)

Syntactic sugar for Handle("PATCH", path, handler)

func (*Group) POST 

func (g *Group) POST(path string, handler HandlerFunc)

Syntactic sugar for Handle("POST", path, handler)

func (*Group) PUT 

func (g *Group) PUT(path string, handler HandlerFunc)

Syntactic sugar for Handle("PUT", path, handler)

func (*Group) Use 

func (g *Group) Use(fn MiddlewareFunc)

Use appends a middleware handler to the Group middleware stack.

func (*Group) UseHandler 

func (g *Group) UseHandler(fn HandlerFunc)

UseHandler is like Use, but handler can't modify the request.

func (*Group) WithGroup 

func (g *Group) WithGroup(path string, fn func(g *Group))

type H added in v0.1.1 

type H map[string]interface{}

type HandlerFunc 

type HandlerFunc func(http.ResponseWriter, Request) error

type LockedGroup 

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

LockedGroup is an immutable version of a Group.

func (*LockedGroup) NewGroup 

func (g *LockedGroup) NewGroup(path string) *Group

type LookupResult 

type LookupResult struct {
	// StatusCode informs the caller about the result of the lookup.
	// This will generally be `http.StatusNotFound` or `http.StatusMethodNotAllowed` for an
	// error case. On a normal success, the statusCode will be `http.StatusOK`. A redirect code
	// will also be used in the case
	StatusCode int
	// contains filtered or unexported fields
}

LookupResult contains information about a route lookup, which is returned from Lookup and can be passed to ServeLookupResult if the request should be served.

type MiddlewareFunc 

type MiddlewareFunc func(next HandlerFunc) HandlerFunc

type Param 

type Param struct {
	Name  string
	Value string
}

type Params 

type Params []Param

func (Params) Get 

func (ps Params) Get(name string) (string, bool)

func (Params) Int32 added in v0.1.2 

func (ps Params) Int32(name string) (int32, error)

func (Params) Int64 added in v0.1.2 

func (ps Params) Int64(name string) (int64, error)

func (Params) Map 

func (ps Params) Map() map[string]string

func (Params) Text 

func (ps Params) Text(name string) string

func (Params) Uint32 

func (ps Params) Uint32(name string) (uint32, error)

func (Params) Uint64 

func (ps Params) Uint64(name string) (uint64, error)

type PathSource 

type PathSource int

type RedirectBehavior 

type RedirectBehavior int

RedirectBehavior sets the behavior when the router redirects the request to the canonical version of the requested URL using RedirectTrailingSlash or RedirectClean. The default behavior is to return a 301 status, redirecting the browser to the version of the URL that matches the given pattern.

On a POST request, most browsers that receive a 301 will submit a GET request to the redirected URL, meaning that any data will likely be lost. If you want to handle and avoid this behavior, you may use Redirect307, which causes most browsers to resubmit the request using the original method and request body.

Since 307 is supposed to be a temporary redirect, the new 308 status code has been proposed, which is treated the same, except it indicates correctly that the redirection is permanent. The big caveat here is that the RFC is relatively recent, and older browsers will not know what to do with it. Therefore its use is not recommended unless you really know what you're doing.

Finally, the UseHandler value will simply call the handler function for the pattern.

type Request 

type Request struct {
	*http.Request

	Params Params
	// contains filtered or unexported fields
}

func (Request) Context 

func (req Request) Context() context.Context

func (Request) Param 

func (req Request) Param(key string) string

func (Request) Route 

func (req Request) Route() string

func (Request) WithContext 

func (req Request) WithContext(ctx context.Context) Request

type TreeMux 

type TreeMux struct {
	Group

	// ErrorHandler handles errors returned from handlers.
	ErrorHandler func(w http.ResponseWriter, req Request, err error)

	// The default NotFoundHandler is http.NotFound.
	NotFoundHandler func(w http.ResponseWriter, r *http.Request)

	// Any OPTIONS request that matches a path without its own OPTIONS handler will use this handler,
	// if set, instead of calling MethodNotAllowedHandler.
	OptionsHandler HandlerFunc

	// MethodNotAllowedHandler is called when a pattern matches, but that
	// pattern does not have a handler for the requested method. The default
	// handler just writes the status code http.StatusMethodNotAllowed and adds
	// the required Allowed header.
	// The methods parameter contains the map of each method to the corresponding
	// handler function.
	MethodNotAllowedHandler func(w http.ResponseWriter, r *http.Request,
		methods map[string]HandlerFunc)

	// HeadCanUseGet allows the router to use the GET handler to respond to
	// HEAD requests if no explicit HEAD handler has been added for the
	// matching pattern. This is true by default.
	HeadCanUseGet bool

	// RedirectCleanPath allows the router to try clean the current request path,
	// if no handler is registered for it, using CleanPath from github.com/dimfeld/httppath.
	// This is true by default.
	RedirectCleanPath bool

	// RedirectTrailingSlash enables automatic redirection in case router doesn't find a matching route
	// for the current request path but a handler for the path with or without the trailing
	// slash exists. This is true by default.
	RedirectTrailingSlash bool

	// RemoveCatchAllTrailingSlash removes the trailing slash when a catch-all pattern
	// is matched, if set to true. By default, catch-all paths are never redirected.
	RemoveCatchAllTrailingSlash bool

	// RedirectBehavior sets the default redirect behavior when RedirectTrailingSlash or
	// RedirectCleanPath are true. The default value is Redirect301.
	RedirectBehavior RedirectBehavior

	// RedirectMethodBehavior overrides the default behavior for a particular HTTP method.
	// The key is the method name, and the value is the behavior to use for that method.
	RedirectMethodBehavior map[string]RedirectBehavior

	// PathSource determines from where the router gets its path to search.
	// By default it pulls the data from the RequestURI member, but this can
	// be overridden to use URL.Path instead.
	//
	// There is a small tradeoff here. Using RequestURI allows the router to handle
	// encoded slashes (i.e. %2f) in the URL properly, while URL.Path provides
	// better compatibility with some utility functions in the http
	// library that modify the Request before passing it to the router.
	PathSource PathSource

	// EscapeAddedRoutes controls URI escaping behavior when adding a route to the tree.
	// If set to true, the router will add both the route as originally passed, and
	// a version passed through URL.EscapedPath. This behavior is disabled by default.
	EscapeAddedRoutes bool

	// SafeAddRoutesWhileRunning tells the router to protect all accesses to the tree with an RWMutex. This is only needed
	// if you are going to add routes after the router has already begun serving requests. There is a potential
	// performance penalty at high load.
	SafeAddRoutesWhileRunning bool
	// contains filtered or unexported fields
}

func New 

func New() *TreeMux

func (*TreeMux) Dump 

func (t *TreeMux) Dump() string

Dump returns a text representation of the routing tree.

func (*TreeMux) Lookup 

func (t *TreeMux) Lookup(w http.ResponseWriter, r *http.Request) (LookupResult, bool)

Lookup performs a lookup without actually serving the request or mutating the request or response. The return values are a LookupResult and a boolean. The boolean will be true when a handler was found or the lookup resulted in a redirect which will point to a real handler. It is false for requests which would result in a `StatusNotFound` or `StatusMethodNotAllowed`.

Regardless of the returned boolean's value, the LookupResult may be passed to ServeLookupResult to be served appropriately.

func (*TreeMux) ServeHTTP 

func (t *TreeMux) ServeHTTP(w http.ResponseWriter, r *http.Request)

func (*TreeMux) ServeLookupResult 

func (t *TreeMux) ServeLookupResult(w http.ResponseWriter, req *http.Request, lr LookupResult)

ServeLookupResult serves a request, given a lookup result from the Lookup function.

Source Files

View all Source files

Directories

Path Synopsis
extra
reqlog Module
treemuxgzip Module
treemuxotel Module

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