How to use Go and http.Transport for HTTP/2 transport?

How to use Go and http.Transport for HTTP/2 transport?

HTTP/2 is a new HTTP protocol version that provides faster transfer speeds and more efficient bandwidth utilization. The Go language comes with support for HTTP/2, and HTTP/2 transmission can be easily performed through the http.Transport package. This article explains how to use Go and http.Transport for HTTP/2 transport, and provides some code examples.

1. Import the required packages

First, we need to import net/http and golang.org/x/net/http2 These two packages. The net/http package provides HTTP client and server functionality, while the golang.org/x/net/http2 package provides support for HTTP/2.

import (
    "net/http"
    "golang.org/x/net/http2"
)

2. Create HTTP client

Next, we need to create an HTTP client. This can be achieved using the http.Client structure, in which some http.Transport options can be set.

client := &http.Client{
    Transport: &http2.Transport{},
}

Here we use http2.Transport as an instance of Transport, thus enabling HTTP/2 transmission.

3. Send HTTP request

Using the created HTTP client, we can send HTTP requests. Here we take a GET request as an example, and output the returned response to the console.

resp, err := client.Get("https://example.com")
if err != nil {
    panic(err)
}
defer resp.Body.Close()

body, err := ioutil.ReadAll(resp.Body)
if err != nil {
    panic(err)
}

fmt.Println(string(body))

In this example, we sent a GET request using the client.Get method and saved the response in the resp variable. Then we use the ioutil.ReadAll method to read the response body as a byte slice, and convert it into a string and output it to the console.

4. Append Header and other options

We can append additional Header or set other options before sending the request. For example, we can attach a custom Header in the following way:

req, err := http.NewRequest("GET", "https://example.com", nil)
if err != nil {
    panic(err)
}
req.Header.Add("X-Custom-Header", "CustomValue")

resp, err := client.Do(req)
if err != nil {
    panic(err)
}
defer resp.Body.Close()

// 处理响应...

In this example, we first create a GET request using the http.NewRequest method and attach a custom Header. Defined Header. We then send the request using the client.Do method, handling the response the same way as before.

5. Skip certificate verification

Sometimes we may need to skip the verification of the server certificate in a test or development environment. This can be achieved through the TLSClientConfig field of http2.Transport. For example:

tr := &http2.Transport{
    TLSClientConfig: &tls.Config{
        InsecureSkipVerify: true,
    },
}

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

In this example, we create a http2.Transport instance and set the TLSClientConfig's InsecureSkipVerify field to true, that is, skip server certificate verification. We then pass this Transport instance to the HTTP client.

Summary:

Through the above steps, we can use Go and http.Transport for HTTP/2 transmission. First import the necessary packages, then create an HTTP client, send HTTP requests, and process the returned responses. We can also attach additional headers and set other options.

I hope this article will help you understand and use Go and http.Transport for HTTP/2 transmission. If you have any questions, please feel free to ask me.

The above is the detailed content of How to use Go and http.Transport for HTTP/2 transport?. For more information, please follow other related articles on the PHP Chinese website!