Demos | Client SocketIO

This demo shows how connect to a Socket.IO Server. Requires a TsgcWebSocketClient to handle WebSocket / TCP protocols.

 

Configuration

• First create a new TsgcWebSocketClient instance, check the Client Demo.
• Then, create a new instance of TsgcWSAPI_SocketIO.
• After that, you must assign the Socket.IO API to WebSocket client and configure the connection options in WebSocket client.

 

SOCKETIO.Client := WSClient;
WSClient.Host := 'socketio-chat-h9jt.herokuapp.com';
WSClient.Port := 443;
WSClient.Options.Parameters := '/';
WSClient.Specifications.RFC6455 := True;
WSClient.TLS := True;

Send Messages

Socket.IO uses TsgcWebSocketClient to send messages to server, so just call WriteData and pass as a parameter the JSON message to socket.io server

 

WSClient.WriteData('42["new message", "' +  txtSocketIOMessage.Text + '"]');

 

Receive Messages

The messages received as the flow of connection is handled by TsgcWebSocketClient, so use this component to read the messages sent from server and to know if connection is active or not.

 

procedure TfrmWebSocketClient.WSClientMessage(Connection: TsgcWSConnection;
  const Text: string);
begin
  DoLog(Text);
end;