golang http Specifically check for timeout error

Specifically check for timeout error

特异性识别 golang http client 的超时错误

   package main

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

   func main() {
          client := &http.Client{}
          _, err := client.Get("http://lsjkgj/kllsjkljg/jljsdglk")

          fmt.Println(err.Error())

          if oe, ok := err.(net.Error); ok {
                  if oe.Timeout() {
                          fmt.Println("timeout")
                  }
          } else {
                  fmt.Println("error")
          }
  }

Get http://lsjkgj/kllsjkljg/jljsdglk: dial tcp: i/o timeout
timeout