[PIC] Problem with UDP over WiFi (EX16 with MRF24wb0)

[larten]

Hi,
I wrote some code for send and receive data using UDP but there is a strange problem. when I test send data or receive data separately it works but when I want to send the data that I receive send part won't work at all.
I hope you can help me with this.

Here is my code:

 switch (UDPState)
        {
            case UDP_OPEN_SOCKET:
// RemoteIP.v[0] = (192ul);
// RemoteIP.v[1] = (168ul);
// RemoteIP.v[2] = (1ul);
// RemoteIP.v[3] = (100ul);
                
                MyUDPSocket = UDPOpenEx(0,UDP_OPEN_SERVER,UDP_LOCAL_PORT,UDP_REMOTE_PORT);

                if (MyUDPSocket == INVALID_UDP_SOCKET)
                    break;
                else
                    UDPState = UDP_SEND;

                break;

            case UDP_SEND:
                if(!UDPIsPutReady(MyUDPSocket))
                    break;

                UDPPutString((BYTE*)buffer);
                UDPFlush();

                UDPState = UDP_LISTEN;
                break;

            case UDP_LISTEN:
                if(!UDPIsGetReady(MyUDPSocket))
                    break;

                for(i = 0; i < 20; i++)
                    buffer[i] = 0;
                
                Result = UDPGetArray((BYTE*)buffer,19);
                UDPDiscard();
                if(Result != 0)
                {
                    putsUART((unsigned int*)"UDP LISTEN = ");
                    putsUART((unsigned int*)buffer);

                    UDPState = UDP_SEND;
                }

                break;

            case UDP_CLOSE_SOCKET:

                break;

            default:
                ;
        }