http编程

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package main

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

var (
	Addr = ":1210"
)

func main() {
	// 创建路由器
	mux := http.NewServeMux()
	// 设置路由规则
	mux.HandleFunc("/bye", sayBye)
	// 创建服务器
	server := &http.Server{
		Addr:         Addr,
		WriteTimeout: time.Second * 3,
		Handler:      mux,
	}
	// 监听端口并提供服务
	log.Println("Starting httpserver at "+Addr)
	log.Fatal(server.ListenAndServe())
}

func sayBye(w http.ResponseWriter, r *http.Request) {
	time.Sleep(1 * time.Second)
	w.Write([]byte("bye bye ,this is httpServer"))
}

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package main

import (
	"fmt"
	"io/ioutil"
	"net"
	"net/http"
	"time"
)

func main() {
	// 创建连接池
	transport := &http.Transport{
		DialContext: (&net.Dialer{
			Timeout:   30 * time.Second, //连接超时
			KeepAlive: 30 * time.Second, //探活时间
		}).DialContext,
		MaxIdleConns:          100,              //最大空闲连接
		IdleConnTimeout:       90 * time.Second, //空闲超时时间
		TLSHandshakeTimeout:   10 * time.Second, //tls握手超时时间
		ExpectContinueTimeout:  1 * time.Second,  //100-continue状态码超时时间
	}
	// 创建客户端
	client := &http.Client{
		Timeout:   time.Second * 30, //请求超时时间
		Transport: transport,
	}
	// 请求数据
	resp, err := client.Get("http://127.0.0.1:1210/bye")
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()
	// 读取内容
	bds, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(bds))
}