Golang HTTP请求超时设置方法

client := &http.Client{
    Timeout: 10 * time.Second,
}
resp, err := client.Get("https://httpbin.org/delay/5")
if err != nil {
log.Fatal(err)
}
defer resp.Body.Close()

transport := &http.Transport{
    DialContext: (&net.Dialer{
        Timeout:   5 * time.Second,  // 建立TCP连接超时
        KeepAlive: 30 * time.Second,
    }).DialContext,
    TLSHandshakeTimeout:   5 * time.Second,  // TLS握手超时
    ResponseHeaderTimeout: 5 * time.Second,  // 发送请求后等待响应头超时
    ExpectContinueTimeout: 2 * time.Second,  // 等待100-continue响应超时
    MaxIdleConns:          100,
    IdleConnTimeout:       90 * time.Second,
}
client := &http.Client{
Transport: transport,
Timeout:   15 * time.Second, // 整体请求仍不能超过15秒
}

ctx, cancel := context.WithTimeout(context.Background(), 8*time.Second)
defer cancel()
req, _ := http.NewRequestWithContext(ctx, "GET", "https://httpbin.org/delay/6", nil)
resp, err := client.Do(req)