How to setup a TURN Server for your WebRTC application ?

Get Started 

Developing a WebRTC application is easy, but solving the issue of NAT could be a difficult task. If you want to build your WebRTC environment without using any 3rd Party cloud solutions, I think you should take a look at an open source lib -  rfc5766-turn-server. Because it not only supports TURN, but also STUN. 

In this tutorial, you will learn how to set up a STUN & TURN server.

1.Download rfc5766-turn-server package

$ wget http://ftp.cn.debian.org/debian/pool/main/r/rfc5766-turn-server/rfc5766-turn-server_3.2.4.4-1_amd64.deb

2. Install

$ sudo apt-get update

$ sudo apt-get install gdebi-core

$ sudo gdebi rfc5766-turn-server_3.2.4.4-1_amd64.deb

Refer to docs in folder /usr/share/doc/rfc5766-turn-server

vim /opt/etc/turnserver.conf.default

3. Configuration

$ sudo vi /etc/turnserver.conf

// Setup IP address - listening-ip and external-ip are required to set up on EC2 of AWS.

listening-ip=172.31.4.37

external-ip=54.223.149.60

// If TURN server is used for WebRTC，please set long-term credential mechanism as shown below.

lt-cred-mech

// Add a user

user=weishihhsun:mypassword

// Setup realm

realm=mycompany.org

4. Start TURN Server

sudo turnserver -c /usr/local/etc/turnserver.conf --daemo

5. Setup TURN Server`s IP address

"iceServers": [{

   "url": "stun:stun.l.google.com:19302"

}, {

   "url": "turn:54.223.149.60",    // Your Server

   "username": "weishihhsun",  //  your Account

   "credential": "mypassword"   //  Your Password

}]

6. Open firewall`s ports

TCP 443

TCP 3478-3479

TCP 32355-65535

UDP 3478-3479

iptables -A INPUT -p tcp -m tcp --dport 443 -j ACCEPT

iptables -A INPUT -p tcp -m tcp --dport 3478:3479 -j ACCEPT

iptables -A INPUT -p tcp -m tcp --dport 32355:65535 -j ACCEPT

iptables -A INPUT -p udp -m tcp --dport 3478:3479 -j ACCEPT