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-# CuteVPN
\ No newline at end of file
+# CuteVPN
+
+## Features
+- Has a built-in routing protocol, so it can switch between different links when failure.
+- Support load balancing. It can send network packets through different links concurrently when available.
+- Support many kinds of links(TCP, UDP, IP).
+- Can work on different layers, on TCP(like Shadowsocks) or IP(like OpenVPN).
+
+## Usage
+- Download a prebuilt package at https://github.com/clmul/cutevpn/releases
+- Edit the config file and `sudo ./cutevpn`
+
+## Config
+The format of config is [TOML](https://github.com/toml-lang/toml)
+#### Virtual Network Establishment
+- `cidr`, String. The IP address and the subnet mask of the node. `192.168.1.234/24`\
+This is similar to the command `ip address add 192.168.1.234/24`
+
+- `gateway`, String. The route for destinations outside of the subnet
+
+- `cipher`, String. The encryption algorithm. `aesgcm`
+
+- `secret`, String. The encryption key.\
+This is a hex-encoded string and it will be used as the encryption key directly.\
+A random 256-bits key can be generated by `xxd -p -l 32 -c 32 /dev/random`
+
+- `links`, Array of Tables. A link is a point-to-point tunnel.\
+Each link has 3 config items.
+    * `link`, String. `udp4` or `tcp4`.
+    * `dial`, String. The peer's listen address and port of the link. `4.3.2.1:54321`
+    * `listen`, String. The listen address and port of this link. `1.2.3.4:12345`
+
+#### Debug HTTP Server
+- `httpserver`, String. The listen address and port of the HTTP server.
+Some debug information can be fetch from this HTTP server.
+
+#### Extra configs
+These config items are not related to the VPN. They are some extra functions for convenience
+- `started`, String. Bash script which will be executed after the vpn started.
+- `stopped`, String. Bash script which will be executed after the vpn stopped.
+- `socks5server`, String. The listen address and port of the SOCKS5 server.
+
+
+## Build
+Install `Go`. https://golang.org/doc/install
+
+Install `dep`. https://github.com/golang/dep#installation
+
+```
+git clone https://github.com/clmul/cutevpn $GOPATH/src/github.com/clmul/cutevpn
+cd $GOPATH/src/github.com/clmul/cutevpn/cutevpn
+dep ensure
+go build
+```