util

README

lib-compose/util

Common middleware handlers.

NewGzipHandler

Transparently gzip the response body if the client supports it (via the Accept-Encoding header) and the response Content-type starts with one of GzipCompressableTypes.

In difference to the most implementations found in the web, we do the decision of compression in the Writer, when the Content-Type is determined.

Documentation

Index

• Constants
• Variables
• func NewGzipHandler(h http.Handler) http.Handler
• func ReadCookieValue(h http.Header, cookieName string) (string, bool)
• type ForwardedHostHandler
  • func NewForwardedHostHandler(next http.Handler) *ForwardedHostHandler
  • func (p *ForwardedHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)
• type GzipResponseWriter
  • func NewGzipResponseWriter(w http.ResponseWriter) *GzipResponseWriter
  • func (grw *GzipResponseWriter) Close()
  • func (grw *GzipResponseWriter) Write(b []byte) (int, error)
  • func (grw *GzipResponseWriter) WriteHeader(code int)

Constants

const X_FORWARDED_HOST_HEADER_KEY = "X-Forwarded-Host"

Variables

var GzipCompressableTypes = []string{
	"text/",
	"application/json",
	"application/xhtml+xml",
	"application/xml",
	"image/svg+xml",
	"application/javascript",
	"application/font-woff",
}

Functions

func NewGzipHandler

func NewGzipHandler(h http.Handler) http.Handler

Transparently gzip the response body if the client supports it (via the Accept-Encoding header) and the response Content-type starts with one of GzipCompressableTypes.

In difference to the most implementations found in the web, we do the decision of compression in the Writer, when the Content-Type is determined.

func ReadCookieValue

func ReadCookieValue(h http.Header, cookieName string) (string, bool)

taken and adapted from net/http

Types

type ForwardedHostHandler

type ForwardedHostHandler struct {
	Next http.Handler
}

func NewForwardedHostHandler

func NewForwardedHostHandler(next http.Handler) *ForwardedHostHandler

func (*ForwardedHostHandler) ServeHTTP

func (p *ForwardedHostHandler) ServeHTTP(w http.ResponseWriter, r *http.Request)

type GzipResponseWriter

type GzipResponseWriter struct {
	http.ResponseWriter
	// contains filtered or unexported fields
}

func NewGzipResponseWriter

func NewGzipResponseWriter(w http.ResponseWriter) *GzipResponseWriter

func (*GzipResponseWriter) Close

func (grw *GzipResponseWriter) Close()

func (*GzipResponseWriter) Write

func (grw *GzipResponseWriter) Write(b []byte) (int, error)

func (*GzipResponseWriter) WriteHeader

func (grw *GzipResponseWriter) WriteHeader(code int)