A ShadowSocks Pac file Generator with fetched China IP range, which helps walk around GFW. It could Generate Pac file automaticlly base on your shadowsocks-gui config file.

中文介绍：http://foryoung365.github.io/development/2015/02/15/shadowsockspac/.

1. Install python from https://www.python.org/. If you have ShadowSocks-gui config file, jump to step 3;

2. Download latest ShadowSocks-gui from ShadowSocks, version 2.3 or higher required. Or Simply run GenPac.py Without any argument, it will download a lastest one for you. Run ShadowSocks-gui and configure your server. Make sure it generate a config file.

3. Clone this project into your ShadowSocks-gui folder:
   git clone https://github.com/foryoung365/ShadowSocksPac.git

4. Copy the config file to the folder and run GenPac.py. Wait a few minutes while pac.txt generating:
   GenPac.py -f[FileName] -d[0 or 1]
   -f: your ShadowSocks-gui config file name, default:gui-config.json
   -d: 0-do not download 1-download latest ShadowSocks-gui automatically, default:1

5. Copy pac.txt to your ShadowSocks-gui folder. Open ShadowSocks-gui and select pac mode.

6. Have fun.

1. Download GenPac.rar from here, decompress GenPac.exe to local disk. If you have ShadowSocks-gui config file, jump to step 3;
2. Download latest ShadowSocks-gui from ShadowSocks, version 2.3 or higher required. Or Simply run GenPac.py Without any argument, it will download a lastest one for you. Run ShadowSocks-gui and configure your server. Make sure it generate a config file.
3. Copy GenPac.exe to your ShadowSocks-gui folder.
4. Run GenPac.exe and wait a few minutes while pac.txt generating.
5. Open ShadowSocks-gui and select pac mode.
6. Have fun.