/// <summary>
/// General update routine.
/// </summary>
public void Update()
{
// KEYBOARD INTERACTION for demonstration purposes
//
// C - connect to WebSocket Server
if (Input.GetKeyDown(KeyCode.C))
{
Debug.Log("[WebSocketServerConnector] C pressed");
if (websocket != null)
{
Debug.Log("[WebSocketServerConnector] Initiate connection to configured WebSocket server.");
websocket.Connect();
}
}
// S - send message from Unity to JavaScript via WebSocket Server
if (Input.GetKeyDown(KeyCode.S))
{
Debug.Log("[WebSocketServerConnector] S pressed");
if (websocket != null)
{
Debug.Log("[WebSocketServerConnector] Send a DefaultMessage to the WebSocket server.");
// construct an example DefaultMessage
MessageJSONAPI.DefaultMessage message = new MessageJSONAPI.DefaultMessage("Unity3D client", "JavaScript client", UNITYsendMessageToJAVASCRIPT, "An example string from Unity to JavaScript via Node.js.", 42, 23.7f, true);
// create JSON string based on message object's properties
string jsonStringMessage = JsonUtility.ToJson(message);
// send string to WebSocket server
websocket.Send(jsonStringMessage);
}
}
}
/// <summary>
/// Instantiation and dynamic reference set up.
/// </summary>
public void Awake()
{
// check if helper instance is set up
if (webSocketReceivedMessageHandler == null)
{
Debug.LogError("[WebSocketServerConnector] WebSocketReceivedMessageHandler is not assigned.");
}
// instantiate new WebSocket object using the specified server url
websocket = new WebSocket(WEBSOCKET_SERVER_URL);
// configure WebSocket event listeners if instantiation was successful
if (websocket != null)
{
// Event Handler: OnOpen
websocket.OnOpen += (sender, e) =>
{
Debug.Log("[WebSocketServerConnector] Connection established to WSS Server.");
};
// Event Handler: OnClose
websocket.OnClose += (sender, e) =>
{
Debug.LogWarning("[WebSocketServerConnector] OnClose event received.");
websocket.Close();
};
// Event Handler: OnClose
websocket.OnError += (sender, e) =>
{
Debug.LogError("[WebSocketServerConnector] OnError event received.");
};
// Event Handler: OnMessage
websocket.OnMessage += (sender, e) =>
{
// determine type of message event
// text (== string) data received
if (e.IsText)
{
Debug.Log("[WebSocketServerConnector] OnMessage received with TEXT data: " + e.Data);
// parse received message formatted in JSON, and create an object accordingly
MessageJSONAPI.DefaultMessage receivedJsonMessage = JsonUtility.FromJson <MessageJSONAPI.DefaultMessage>(e.Data);
// access / use parsed JSON data
Debug.Log(receivedJsonMessage);
Debug.Log(receivedJsonMessage.sender);
Debug.Log(receivedJsonMessage.receiver);
Debug.Log(receivedJsonMessage.api);
Debug.Log(receivedJsonMessage.valueString);
Debug.Log(receivedJsonMessage.valueInt);
Debug.Log(receivedJsonMessage.valueFloat);
Debug.Log(receivedJsonMessage.valueBool);
// determine what to do next based on determined API field
switch (receivedJsonMessage.api)
{
case JAVASCRIPTsendMessageToUNITY:
Debug.Log("Message received from JavaScript client.");
// do something
// === update from 2021-02-23 ===
// Generally, data structure manipulation is possible directly from within this event, but not Unity GameObject-related manipulations.
// As a work-around, the WebSocketReceivedMessageHandler class was created (see its documentation for further information).
// hand over received message to WebSocketReceivedMessageHandler, responsible for further handling of any desired (and Unity GameObject-related) actions in the application
webSocketReceivedMessageHandler.queueDefaultMessage(receivedJsonMessage);
break;
default:
break;
}
}
// binary data received
else if (e.IsBinary)
{
Debug.Log("[WebSocketServerConnector] OnMessage received with BINARY raw data: " + e.RawData);
}
// ping received
else if (e.IsPing)
{
Debug.Log("[WebSocketServerConnector] OnMessage ping received from server.");
}
// data could not be determined
else
{
Debug.Log("[WebSocketServerConnector] Message received with UNDETERMINED data: " + e.Data);
}
};
}
}