Client unable to send message.

Unity Engine
1

When i send a network message through the LLAPI either the server does not receive the message or the client does not send it, i get the following warning message on the clients console:

The server receives the connection event and the client creates a connection with the server, so i have no idea whats going on I’ve been researching for a while now but i cant find anyone else having this issue.
Here is my code:

—Server—

    int connectionID;
    int maxConnections = 20;
    int reliableChannelID;
    int hostID;
    int socketPort = 8888;
    byte error;

    void Start ()
    {
        NetworkTransport.Init ();
        ConnectionConfig config = new ConnectionConfig ();
        reliableChannelID = config.AddChannel (QosType.Reliable);
        HostTopology topology = new HostTopology (config, maxConnections);
        hostID = NetworkTransport.AddHost (topology, socketPort);
    }

    void Update ()
    {
        int recHostID;
        int recConnectionID;
        int recChannelID;
        byte[] recBuffer = new byte[1024];
        int bufferSize = 1024;
        int dataSize;
        NetworkEventType recNetworkEvent = NetworkTransport.Receive (out recHostID, out recConnectionID, out recChannelID, recBuffer, bufferSize, out dataSize, out error);

        switch (recNetworkEvent) {

        case NetworkEventType.ConnectEvent:
            print ("connectionRecieved");
            break;

        case NetworkEventType.DataEvent:
            string message = Encoding.Unicode.GetString (recBuffer, 0, dataSize);
            print ("Recieved: " + message);
            break;

        case NetworkEventType.DisconnectEvent:
            break;

        case NetworkEventType.Nothing:
            break;

        }

    }

—Client—

int connectionID;
    int maxConnections = 20;
    int reliableChannelID;
    int hostID;
    int socketPort = 8889;
    byte error;

    void Start ()
    {
        NetworkTransport.Init ();
    }

    public void Connect ()
    {
        ConnectionConfig config = new ConnectionConfig ();
        reliableChannelID = config.AddChannel (QosType.Reliable);
        HostTopology topology = new HostTopology (config, maxConnections);
        hostID = NetworkTransport.AddHost (topology, socketPort);

        connectionID = NetworkTransport.Connect (hostID, "127.0.0.1", 8888, 0, out error);
        print ("connected, connectionID: " + connectionID);
    }

    public void Disconnect ()
    {
        NetworkTransport.Disconnect (hostID, connectionID, out error);
    }

    public void sendMsg (string message)
    {
        byte[] buffer = Encoding.Unicode.GetBytes (message);

        NetworkTransport.Send (hostID, connectionID, reliableChannelID, buffer, message.Length * sizeof(char), out error);
    }
2

I found out what the problem is: the client doesn’t know its connected because it has to have this code as well otherwise it doesn’t know it’s connected.

int recHostID;
        int recConnectionID;
        int recChannelID;
        byte[] recBuffer = new byte[1024];
        int bufferSize = 1024;
        int dataSize;
        NetworkEventType recNetworkEvent = NetworkTransport.Receive (out recHostID, out recConnectionID, out recChannelID, recBuffer, bufferSize, out dataSize, out error);
        switch (recNetworkEvent) {
        case NetworkEventType.ConnectEvent:
            print ("connectionRecieved");
            break;
        case NetworkEventType.DataEvent:
            string message = Encoding.Unicode.GetString (recBuffer, 0, dataSize);
            print ("Recieved: " + message);
            break;
        case NetworkEventType.DisconnectEvent:
            break;
            break;
1 Like
3

I have a similar problem to above but with the server: i’m unable to send data from the server to the client maybe it’s because in the server it’s not setting a connection ID? How can i send data from server to clients if the server doesn’t have an connection ID.

4

Connect request is just polite request for connection establishing. You don’t know will this request successful or not.
So,
client:
connectionId = …Connect();
event = Receive(… receivedConnectionId…);
if event == ConnectEvent && connectionId == receivedConnectionId
Only AFTER THAT I CAN SEND DATA.

Server:
event = Receive(… receivedConnectionId…);
if event == ConnectEvent
WE RECEIVE NEW CONNECTION, new connectionid = receivedConnectionId
NOW WE CAN SEND DATA TO receivedConnectionId

was i clean?

5

So the server uses the clients id to send a message to them?

        NetworkTransport.Send (hostID, targetID, reliableChannelID, buffer, message.Length * sizeof(char), out error);

Where targetID is a clients connection ID.

6

@Epic-Username , hm, no :slight_smile:
I guess the best approach will be, PM me with your project and I will take a look, ok?