go 设置http请求超时时间

10.11.12.13不真实存在，ping会超时。

使用 http.Client 设置全局超时

package main

import (
	"net/http"
	"time"
)

func main() {
	client := &http.Client{
		Timeout: 5 * time.Second, // 设置总超时时间（包括连接、请求和响应）
	}
	
	resp, err := client.Get("https://10.11.12.13:443")
	if err != nil {
		return
	}
	defer resp.Body.Close()
}

 

使用context设置单个请求超时

package main

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

func main() {
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, "GET", "https://10.11.12.13:443", nil)
	if err != nil {
		return
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		return
	}
	defer resp.Body.Close()
}

 

 

go 设置http请求超时时间

package main

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

func main() {
	client := &http.Client{
		Transport: &http.Transport{
			DialContext: (&net.Dialer{
				Timeout: 1 * time.Second, // 连接超时
			}).DialContext,
			TLSHandshakeTimeout:   700 * time.Millisecond, // TLS握手超时
			ResponseHeaderTimeout: 300 * time.Millisecond, // 响应头超时
			ExpectContinueTimeout: 500 * time.Millisecond, // 100-continue等待超时
		},
		Timeout: 5 * time.Second, // 总超时
	}

	resp, err := client.Get("https://10.11.12.13:443")
	if err != nil {
		return
	}
	defer resp.Body.Close()
}

 

使用http.Server设置细粒度超时时间

package main

import (
	"net/http"
	"time"
)

func main() {
	srv := &http.Server{
		Addr:         ":443",
		ReadTimeout:  1 * time.Second, // 读取请求头的超时
		WriteTimeout: 3 * time.Second, // 写入响应的超时
		IdleTimeout:  5 * time.Second, // keep-alive 连接的空闲超时
	}

	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("ok"))
	})

	srv.ListenAndServe()
}