6.访问延迟处理
最后更新于：2022-04-02 04:46:25
访问延迟处理
~~~
package main
import (
"fmt"
"net/http"
"net"
"time"
)
var url = []string{
"http://www.baidu.com",
"http://google.com",
"http://taobao.com",
}
func main() {
for _, v := range url {
//type Client struct{}
c := http.Client{
//type Transport struct {}
Transport: &http.Transport {
//Dial func(network, addr string) (net.Conn, error)
Dial:func(network, addr string) (net.Conn, error){
timeout := time.Second*2
return net.DialTimeout(network, addr, timeout)
},
},
}
resp, err := c.Head(v)
if err != nil {
fmt.Printf("head %s failed, err:%v\n", v, err)
continue
}
fmt.Printf("head %s succ, status:%v\n", v ,resp.Status)
}
}
~~~
$ go run main.go
输出结果：
head http://www.baidu.com succ, status:200 OK
head http://google.com failed, err:Head http://google.com: dial tcp [2404:6800:4008:801::200e]:80: i/o timeout
head http://taobao.com succ, status:200 OK
';