vimagination.zapto.org/httpbuffer

httpbuffer

-- import "vimagination.zapto.org/httpbuffer"

Package httpbuffer provides a buffer for HTTP requests so that the Content-Length may be set and compression applied for dynamic pages.

Highlights

• Buffer HTTP responses before sending them to the client.
• Automatically sets Content-Length header.
• Supports optional compression which is automatically applied based on Accept-Encoding header.
• Import vimagination.zapto.org/httpbuffer/{brotli,deflate,gzip} to support compression.

Usage

package main

import (
	"fmt"
	"io"
	"net/http"
	"net/http/httptest"

	"vimagination.zapto.org/httpbuffer"
	_ "vimagination.zapto.org/httpbuffer/gzip"
)

func handler(w http.ResponseWriter, r *http.Request) {
	io.WriteString(w, "Hello, World!")
}

func main() {
	w := httptest.NewRecorder()
	r, _ := http.NewRequest(http.MethodGet, "/", nil)

	handler(w, r)

	fmt.Println(w.Result().ContentLength)

	w = httptest.NewRecorder()
	buf := httpbuffer.Handler{Handler: http.HandlerFunc(handler)}
	buf.ServeHTTP(w, r)

	fmt.Println(w.Result().ContentLength)
	fmt.Println(w.Body)

	// Output:
	// -1
	// 13
	// Hello, World!
}

Documentation

Full API docs can be found at:

https://pkg.go.dev/vimagination.zapto.org/httpbuffer