# Step 4: Configuring Softwares to Use Qv2ray

Congratulations! There's only one step left in order to access the unlocked Internet!

# General Methods

# Using System Proxy

For Windows and macOS users, almost all of the applications will follow the system proxy settings. For Linux users, some applications such as Firefox and Chromium, but not all, will read and obey the proxy configurations in GNOME/KDE Settings.

Currently, automatic setting of system proxy is supported by Qv2ray, including Windows, macOS and Linux (GNOME/KDE). You may find System Proxy options of Qv2ray in the following positions:

  • Qv2ray Tray Menu.
    1. Right click on the tray icon.
    2. In the popup menu, choose System Proxy -> Enable/Disable System Proxy.
  • Qv2ray Preference Window.
    1. Click Preferences button in the main window.
    2. In Preference Window, choose the tab Inbound Settings.
    3. Check the option Set System Proxy.
    4. Click OK to apply the settings.

Linux Users: KDE/GNOME Proxy Settings

If you are using GNOME as your main desktop environment, you may find it quite useful to set a system proxy. That's because GNOME Proxy Settings is almost universally acknowledged.

However, KDE users may have a difficult time, since KDE Proxy Settings is more like a toy. Even KDE Applications themselves won't read and obey that configuration. In that case, you may seek for an alternative solution to configure your applications.

Windows Users: UWP Loopback Problem

By default, UWP applications are prohibited from using a proxy with a loopback address (127.0.0.1), so the system proxy settings will probably cause your UWP applications cease to work normally.

According to an article by Microsoft (opens new window), you can resolve the problem by running the following command in a Command Prompt(or Powershell) with admin privileges:

for CMD:

FOR /F "tokens=11 delims=\" %p IN ('REG QUERY "HKCU\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings"') DO CheckNetIsolation.exe LoopbackExempt -a -p=%p

for PowerShell:

Get-ChildItem -Path Registry::"HKCU\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\" -name | ForEach-Object {CheckNetIsolation.exe LoopbackExempt -a -p="$_"}

Or, You can just simply use some third-party tools. We here present you this program from Fiddler (opens new window) project.

# Configure Manually in Applications

# Telegram

You can configure Telegram to use proxies in the app. Go to Settings -> Advanced -> Network and proxy and click Connection type, where Proxy Settings dialog will be opened.

In Proxy Settings, click Add Proxy button on the bottom. Choose SOCKS5/HTTP according to your own flavor and fill in the blanks with the information from Qv2ray Inbound Settings.

Finally, click on the proxy entry that you've just configured. You are done.

# Web Browsers

Almost all web browsers support manual configuration of proxies. Taking Firefox as example, you can find this settings in Preferences -> General -> Network -> Manual Proxy Configuration. Fill these fields with the information from Qv2ray Inbound Settings to use Qv2ray.

Using Proxy Plugins

To avoid switching back and forth among proxy configurations, you may want to use a third-party plugin (eg: SwitchyOmega) to enhance your browser. These plugins can help to implement a more sophisticated configuration, including multiple profiles and further traffic diversion.

# Java Applications

For Java applications, you may use configure proxies through JVM arguments.

Here are some examples:

  • Using SOCKS5:
    java -DsocksProxyHost=127.0.0.1 -DsocksProxyPort=1088 -jar some-application.jar
    
  • Using HTTP(S):
    java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=8000 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=8000 -jar some-application.jar
    

Buggy Minecraft

Newer versions of Minecraft (>=1.5.2) won't follow JVM proxy settings. That is not Qv2ray's problem. If you really want to play Minecraft through proxy, consider setting up a Dokodemo-door inbound for that server and connect directly to localhost.

# Platform-dependent Methods

# Using Environment Variables

Many CLI programs (for example curl and wget) will use the proxies given by <PROTOCOL>_PROXY environment variable.

Here is a configuration example:

# Change the host and port according to Qv2ray inbound configuration
export HTTP_PROXY="http://127.0.0.1:8000"
export HTTPS_PROXY="http://127.0.0.1:8000"

If authentication is enabled in Qv2ray, use the following settings:

# Change user/pass according to your configuration
export HTTP_PROXY="http://user:[email protected]:8000"
export HTTPS_PROXY="http://user:[email protected]:8000"

Note that if there is a special character in your username or password, you need to encode it. Here's a quick reference:

! # $ & ' ( ) * + , / : ; = ? @ [ ]
%21 %23 %24 %26 %27 %28 %29 %2A %2B %2C %2F %3A %3B %3D %3F %40 %5B %5D

Or enter the text you want to encode:

For programs running in sudo, it is required to configure sudo to preserve these variables if you do not run sudo in a shell. Call visudo with root and add the following line:

Defaults env_keep += "HTTP_PROXY HTTPS_PROXY"

Still, there are some programs who are using their own variables. For example, rsync uses RSYNC_PROXY for HTTP proxies:

export RSYNC_PROXY=user:[email protected]:8000

It is strongly recommended to read the manual of programs that you want to configure proxy with.

# Using proxychains

If none of the above methods works, you can try using proxychains, which hijacks program's function/library to redirect network connections into your proxies.

First, you should install proxychains-ng. Installation methods varies with each operating system.

Edit /etc/proxychains.conf (for global proxychains) or $HOME/.proxychains/proxychains.conf (for user), edit [ProxyList] section and change the proxy to SOCKS5 Proxy in Qv2ray:

[ProxyList]
socks5  127.0.0.1  1088

After configuring proxychains, you may use proxychains <program> in terminal to make proxychains hijack the program to use the given proxy. If you are fed up with the noisy output, you may append -q option after proxychains.

One thing to note is that proxychains does not work with statically-linked programs, for example, Golang programs.