GolangHTTP超时设置与测试方法

func TestHTTPTimeout(t *testing.T) {
    // 模拟一个响应时间为2秒的服务器
    server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        time.Sleep(2 * time.Second)
        w.WriteHeader(http.StatusOK)
        w.Write([]byte("hello"))
    }))
    defer server.Close()
// 客户端设置1秒超时
client := &http.Client{
    Timeout: 1 * time.Second,
}

_, err := client.Get(server.URL)
if err == nil {
    t.Fatal("expected request to timeout")
}
// 检查是否为超时错误
if !strings.Contains(err.Error(), "timeout") {
    t.Errorf("expected timeout error, got %v", err)
}
}

client := &http.Client{
    Transport: &http.Transport{
        DialContext: (&net.Dialer{
            Timeout:   500 * time.Millisecond,
            KeepAlive: 30 * time.Second,
        }).DialContext,
        ResponseHeaderTimeout: 500 * time.Millisecond,
    },
}

server := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    // 不写入任何响应，连接将一直挂起
    // 可选：手动关闭连接以测试其他行为
}))
server.Start()
defer server.Close()
client := &http.Client{Timeout: 1 * time.Second}
_, err := client.Get(server.URL)
if err == nil {
t.Fatal("expected timeout due to no response")
}