handlers's Introduction

gorilla/handlers

Package handlers is a collection of handlers (aka "HTTP middleware") for use with Go's net/http package (or any framework supporting http.Handler), including:

LoggingHandler for logging HTTP requests in the Apache Common Log Format.
CombinedLoggingHandler for logging HTTP requests in the Apache Combined Log Format commonly used by both Apache and nginx.
CompressHandler for gzipping responses.
ContentTypeHandler for validating requests against a list of accepted content types.
MethodHandler for matching HTTP methods against handlers in a map[string]http.Handler
ProxyHeaders for populating r.RemoteAddr and r.URL.Scheme based on the X-Forwarded-For, X-Real-IP, X-Forwarded-Proto and RFC7239 Forwarded headers when running a Go server behind a HTTP reverse proxy.
CanonicalHost for re-directing to the preferred host when handling multiple domains (i.e. multiple CNAME aliases).
RecoveryHandler for recovering from unexpected panics.

Other handlers are documented on the Gorilla website.

Example

A simple example using handlers.LoggingHandler and handlers.CompressHandler:

import (
    "net/http"
    "github.com/gorilla/handlers"
)

func main() {
    r := http.NewServeMux()

    // Only log requests to our admin dashboard to stdout
    r.Handle("/admin", handlers.LoggingHandler(os.Stdout, http.HandlerFunc(ShowAdminDashboard)))
    r.HandleFunc("/", ShowIndex)

    // Wrap our server with our gzip handler to gzip compress all responses.
    http.ListenAndServe(":8000", handlers.CompressHandler(r))
}