Reusing http connections in Golang

Question

I\'m currently struggling to find a way to reuse connections when making HTTP posts in Golang.

I\'ve created a transport and client like so:

// Crea         


        

Answer 1

Another approach to init() is to use a singleton method to get the http client. By using sync.Once you can be sure that only one instance will be used on all your requests.

var (
    once              sync.Once
    netClient         *http.Client
)

func newNetClient() *http.Client {
    once.Do(func() {
        var netTransport = &http.Transport{
            Dial: (&net.Dialer{
                Timeout: 2 * time.Second,
            }).Dial,
            TLSHandshakeTimeout: 2 * time.Second,
        }
        netClient = &http.Client{
            Timeout:   time.Second * 2,
            Transport: netTransport,
        }
    })

    return netClient
}

func yourFunc(){
    URL := "local.dev"
    req, err := http.NewRequest("POST", URL, nil)
    response, err := newNetClient().Do(req)
    // ...
}