问题表现

重现代码：

package main

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

func main() {

	client := &http.Client{
		Timeout: time.Duration(3) * time.Second,
	}

	for i := 0; i < 100; i++ {
		go func() {
			for {
				req, _ := http.NewRequest(http.MethodGet, "https://baidu.com", nil)

				rsp, err := client.Do(req)
				if err != nil {
					fmt.Println("request failed", err)
					continue
				}

				rsp.Body.Close()

				body, err := io.ReadAll(rsp.Body)
				if err != nil {
					fmt.Println("read body failed", err)
					continue
				}

				fmt.Println(string(body))
			}
		}()
	}

	select {}
}

启动后，随着请求越来越多，很快就出现了"cannot assign requested address"错误，服务器出现大量TIME_WAIT连接。

北京的三月飞雪

北京的三月飞雪

北京的三月飞雪