Introduction

Enterprises with high-security requirements usually have firewalls that restrict employees from visiting unauthorized sites to protect internal information.

To ensure that enterprise users can connect to Agora's services through a firewall, Agora provides the cloud proxy service.

Working principles

The following figure shows the working principles of the Agora cloud proxy service.

1. Before connecting to Agora SD-RTN™, the SDK sends the request to the cloud proxy service.
2. The cloud proxy service sends back the proxy information.
3. The SDK sends the data to the cloud proxy service, and the cloud proxy service forwards the data to Agora SD-RTN™.
4. Agora SD-RTN™ sends the data to the cloud proxy service, and the cloud proxy service forwards the data to the SDK.

Implementation

v3.4.0 or later

The Web SDK v3.4.0 optimizes the Agora cloud proxy architecture and enhances its connectivity in environments with restricted network access. The optimized Agora cloud proxy service also supports regional connection. If you use the Web SDK v3.4.0 or later (the 4.x not included), follow these steps to set up a cloud proxy service:

1. Apply for the cloud proxy

Contact support@agora.io and provide the following information:

• Your App ID
• The regions using the cloud proxy
• Concurrent scale
• Network operators

2. Enable the cloud proxy on the client

Before joining a channel, call the startProxyServer method to enable the cloud proxy service and set type as 3, and then test if the audio call and video call or the live streaming works.

var client = AgoraRTC.createClient({mode: 'live',codec: 'vp8'});

// Enable the cloud proxy.
client.startProxyServer(3);
// Join a channel.
client.init(key, function() {
    client.join(channelKey, channel, null, function(uid) {
      /** ... **/
    })
})

3. Disable the cloud proxy on the client

To disable the cloud proxy, call the stopProxyServer method after leaving the channel.

// After enabling the cloud proxy and joining the channel.
/** ... **/
// Leave the channel.
client.leave();

// Disable the cloud proxy.
client.stopProxyServer();

// Join the channel.
client.join(channelKey, channel, null, function(uid) {
 /** ... **/
}

v2.5.1 to v3.3.1

If you use any version between the Web SDK v2.5.1 to v3.3.1, follow these steps to set up a cloud proxy service:

1. Apply for the cloud proxy

Contact support@agora.io and provide the following information:

• Your App ID
• The regions using the cloud proxy
• Concurrent scale
• Network operators

2. Add IP addresses and ports to your whitelist

Add the following test IP addresses and ports to your whitelist.

The sources are the clients that integrate the Agora Web SDK.

3. Enable the cloud proxy on the client

Before joining a channel, call the startProxyServer method to enable the cloud proxy service and set type as 3, and then test if the audio call and video call or the live streaming works.

var client = AgoraRTC.createClient({mode: 'live',codec: 'vp8'});

// Start the cloud proxy.
client.startProxyServer();
// Join a channel.
client.init(key, function() {
    client.join(channelKey, channel, null, function(uid) {
        .......
    })
})

4. Disable the cloud proxy on the client

To disable the cloud proxy, call the stopProxyServer method after leaving the channel.

// After enabling the cloud proxy and joining the channel.
...
// Leave the channel.
client.leave();

// Disable the cloud proxy.
client.stopProxyServer();

// Join the channel.
client.join(channelKey, channel, null, function(uid) {
...
}

API reference

• startProxyServer
• stopProxyServer

Considerations

• The startProxyServer and stopProxyServer methods must be called before joining the channel or after leaving the channel.
• The Agora Web SDK also provides the setProxyServer and setTurnServer methods for you to deploy the proxy. The setProxyServer and setTurnServer methods cannot be used with the startProxyServer method at the same time, else an error occurs.
• The stopProxyServer method disables all proxy settings, including those set by the setProxyServer and setTurnServer methods.