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Introduction

Shadowsocks is a cross-platform tunnel proxy which can help you get through firewalls.

This iOS version is for non-jailbroken devices. It has two features.

Shadowsocks works as a multi-tab web browser. It's really easy to use.

Tap the + button to open menu.
Tap Settings to configure Shadowsocks proxy settings.
Tap New Tab to open a new Tab. Tap URL field on the top to input URL.
Swipe a tab to scroll the tabs. Hold and press a tab to swap tabs.
If you've changed Proxy Mode, a restart is needed to take effect. (Kill the app, then open the app again).

Shadowsocks works as a background global PAC proxy, with some restrictions.

Only works with Wi-Fi network. But we are working on the cellular network.
Only works for a few minutes. Due to iOS restrictions, Shadowsocks can't keep running in the background. It's killed after you left it for a while. To keep it running long, you have to come back to Shadowsocks app every few minutes.
If you are an iOS developer, you can find some commented code in the source code, which tries to play a piece of music. Thus the app can keep running all the time. But this prevents us from getting approved on the App Store. You have to build the app for yourself, and use the app yourself.

So it's a little tricky to use global proxy.

Set up proxy settings in shadowsocks.
Copy this link http://127.0.0.1:8090/proxy.pac
Open iOS Settings -> Wi-Fi -> i icon on the right of your connected Wi-Fi -> HTTP Proxy. Choose Auto, paste the link in the URL field. Tap back.
Other apps now go through the proxy. If they don't, kill and restart them.
Come back every few minutes to keep Shadowsocks running in the background.

Set up a Shadowsocks server on your VPS.

You can choose one of the following servers:

You can find all available servers here.

Some FAQ is in the Trobleshooting.

First, you have to update submodules:

git submodule update --recursive --init
open shadowsocks.xcodeproj

Then build with XCode.