Set global proxy golang

Golang is a high-performance programming language that is loved by more and more people. In different application scenarios, we will use network requests, and sometimes we need to use a proxy to make requests, which requires setting a global proxy in Golang.

This article will introduce how to set up a global proxy in Golang. We'll cover how to set it up on three operating systems: Windows, Mac, and Linux.

Using proxies in Golang

First, we need to add a proxy to the code. We can use Golang's own net/http package and url package to set up the proxy. The code is as follows:

package main

import (
    "fmt"
    "io/ioutil"
    "net/http"
    "net/url"
)

func main() {
    proxyUrl, _ := url.Parse("http://127.0.0.1:1080")
    client := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxyUrl)}}

    resp, err := client.Get("https://www.google.com")
    if err != nil {
        fmt.Println("Error: ", err)
        return
    }
    defer resp.Body.Close()

    body, err := ioutil.ReadAll(resp.Body)
    if err != nil {
        fmt.Println("Error: ", err)
        return
    }

    fmt.Println(string(body))
}

In this code, we create a The client object uses http.Transport to set the proxy and initiate a GET request to Google (https://www.google.com). Here, we use the local http proxy http://127.0.0.1:1080.

Before running this code, we need to ensure that the local proxy service is already running.

If the proxy service is not configured correctly, an error message will be returned.

Set the global proxy in Windows

Under the Windows operating system, we can use the proxy option in the system settings to set the global proxy.

Open the "Network and Internet Settings" -> "Proxy" tab in the Windows system settings and turn on the "Manually set proxy server" switch.

Enter the proxy server address and port number in "HTTP", for example 127.0.0.1:1080.

Then click the "Save" button to save the settings.

Set the global proxy in Mac

Under the Mac operating system, we can set the global proxy in the system network settings. The detailed steps are as follows:

1. Open " System Preferences, and click Network.
2. In Network Settings, click the connection type in the list on the left, such as Wi-Fi, and then click the Advanced button.
3. In Advanced Network Settings, click the Proxy tab and select Manual in the Selection Box.
4. Enter the proxy server address and port number in the "Web Proxy (HTTP)" field, for example 127.0.0.1:1080.
5. Click the "OK" button and close the advanced settings.

Set the global proxy in Linux

Under the Linux operating system, we can use environment variables to set the global proxy. We need to set the HTTP_PROXY and HTTPS_PROXY environment variables to the proxy server address and port number.

We can run the following command in the terminal to set the environment variables:

export HTTP_PROXY=http://127.0.0.1:1080
export HTTPS_PROXY=https://127.0.0.1:1080

Here, we will set both the HTTP_PROXY and HTTPS_PROXY environment variables It becomes 127.0.0.1:1080. This address is the address of our proxy server.

We can also add these environment variables to the system's .bashrc or .bash_profile file to ensure that the proxy is automatically set every time you log in.

Summary

It is not difficult to set up a global proxy in Golang. You only need to use the http.Transport and url packages, and then set it in the code Just be an agent. If you need to set up a global proxy under multiple operating systems, you can do so according to the method provided in this article.

Setting a global proxy can help us use the proxy when making network requests, hide our real IP address, and protect our network security.

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