Go set http request header

request.go

package main

import (
	"net/http"
)

func main() {
	client := &http.Client{}

	reqest, _ := http.NewRequest("GET", "http://localhost:9090", nil)
	reqest.Header.Set("Auth-Token", "123")
	client.Do(reqest)
}

result.txt

path: /
method: GET
header: map[User-Agent:[Go 1.1 package http] Auth-Token:[123] Accept-Encoding:[gzip]]

server.go

package main

import (
	"fmt"
	"log"
	"net/http"
)

func sayHello(w http.ResponseWriter, r *http.Request) {
	fmt.Println("")
	fmt.Println("path:", r.URL.Path)
	fmt.Println("method:", r.Method)
	fmt.Println("header:", r.Header)

	fmt.Fprintf(w, "Hello world!") //这个写入到w的是输出到客户端的
}

func main() {
	http.HandleFunc("/", sayHello)   //设置访问的路由
	http.HandleFunc("/login", login) //设置访问的路由

	err := http.ListenAndServe(":9090", nil) //设置监听的端口
	if err != nil {
		log.Fatal("ListenAndServe: ", err)
	}
}