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@yhsiang
Created February 19, 2024 05:44
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package main
import (
"bytes"
"crypto/tls"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"time"
)
func main() {
idleTime := 1 * time.Second
transport := &http.Transport{
MaxIdleConns: 0,
MaxConnsPerHost: 0,
TLSClientConfig: &tls.Config{
MinVersion: tls.VersionTLS12,
MaxVersion: tls.VersionTLS12,
CurvePreferences: []tls.CurveID{tls.CurveP521, tls.CurveP384, tls.CurveP256},
PreferServerCipherSuites: true,
CipherSuites: []uint16{
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
},
},
}
client := &http.Client{
Transport: transport,
}
fmt.Printf("Client timoeut: %+v\n", client.Timeout)
fmt.Printf("Idle timeout: %+v\n", transport.IdleConnTimeout)
for {
performRequest(client)
time.Sleep(idleTime)
}
}
func performRequest(client *http.Client) {
urlString := "https://exampl.com"
payloadString := "my payload"
err := request(client, urlString, payloadString)
if err != nil {
log.Printf("request failed: %+v", err)
} else {
log.Printf("request succeeded")
}
}
func request(client *http.Client, urlString, payloadString string) error {
payload := bytes.NewBufferString(payloadString)
req, err := http.NewRequest(http.MethodPost, urlString, payload)
if err != nil {
return fmt.Errorf("error creating request: %s", err)
}
resp, err := client.Do(req)
if err != nil {
return fmt.Errorf("error performing request: %s", err)
}
defer func() {
io.Copy(ioutil.Discard, resp.Body)
resp.Body.Close()
}()
if resp.StatusCode != http.StatusOK {
body, _ := io.ReadAll(resp.Body)
_ = resp.Body.Close()
return fmt.Errorf("HTTP %d: %s", resp.StatusCode, body)
}
body, err := io.ReadAll(resp.Body)
if err != nil {
_ = resp.Body.Close()
return fmt.Errorf("error reading body: %s", err)
}
if err := resp.Body.Close(); err != nil {
return fmt.Errorf("error closing body: %s", err)
}
if string(body) != "ok!" {
return fmt.Errorf("unexpected response: %s", body)
}
return nil
}
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