Untitled

package main

import (
    "fmt"
    "net/http"
    "time"
    "crypto/tls"
)

func main() {
    sites := []string{
        "https://www.github.com",
        "https://www.cloudflare.com",
        "https://www.youtube.com",
    }

    for _, site := range sites {
        start := time.Now()

        // 创建一个自定义的TLS配置，启用了TCP连接时的RTT测量
        tlsConfig := &tls.Config{
            InsecureSkipVerify: true, // 跳过证书验证，仅用于测量目的
        }

        transport := &http.Transport{
            TLSClientConfig: tlsConfig,
        }

        client := &http.Client{
            Transport: transport,
        }

        resp, err := client.Get(site)
        if err != nil {
            fmt.Printf("无法连接到 %s: %v\n", site, err)
            continue
        }
        defer resp.Body.Close()

        elapsed := time.Since(start).Milliseconds()
        fmt.Printf("网站: %s\n", site)
        fmt.Printf("HTTPS延迟: %d ms\n", elapsed)
        
        tlsConnState, ok := resp.TLS.HandshakeComplete()
        if ok {
            rtt := tlsConnState.RTT.Milliseconds()
            fmt.Printf("TLS RTT: %d ms\n", rtt)
        } else {
            fmt.Println("未能测量TLS RTT")
        }

        fmt.Println()
    }
}