golang 实现http请求测试代码示例

server端：

package main

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

func IndexHandler(w http.ResponseWriter, req *http.Request) {
  fmt.Println("-------------------")

  fmt.Println(w, "hello world")
  body, err := ioutil.ReadAll(req.Body)
  if err != nil {
    fmt.Println("read all error")
    return
  }
  fmt.Println(">>", string(body))

}

func main() {

  http.HandleFunc("/", IndexHandler)
  fmt.Println("start")
  err := http.ListenAndServe("127.0.0.1:19988", nil)
  if err != nil {
    fmt.Println("err:", err)
    return
  }
 fmt.Println("end")
}
 

client端：

package main

import (
  "fmt"
  "net/http"
  "time"
  "net"
  "encoding/json"
  "strings"
)

func main() {

    connTimeout := 2*time.Millisecond
    readTimeout := 3*time.Millisecond

    client := http.Client{
        Transport: &http.Transport{
            Dial: func(netw, addr string) (net.Conn, error) {
                c, err := net.DialTimeout("tcp4", addr, connTimeout)
                if err != nil {
                    return nil, err
                }
                c.SetDeadline(time.Now().Add(readTimeout))
                return c, nil
            },
        },
    }

    for i:=0; i<100; i++ {
        postParams := map[string]interface{}{"checksum": "1111111111111", "result": "penggetest"}
        bytebody, _ := json.Marshal(postParams)
        retbody := string(bytebody)

        req, err := http.NewRequest("POST", "http://127.0.0.1:19988/", strings.NewReader(retbody))
        if err != nil {
            fmt.Println("new request err:", err)
            return
        }
        headers := make(map[string]string)
        for key, value := range headers {

            req.Header.Set(key, value)
        }
        resp, reqErr := client.Do(req)
        if reqErr != nil {
            fmt.Println(" client do err:", reqErr)
            return
        }
        defer resp.Body.Close()

        fmt.Println("code:", resp.StatusCode, "\nerr:", err)
        time.Sleep(2*time.Second)
    }
}
运行服务端：

运行客户端：