Esempio n. 1
0
/*----------------------------------------------------------------------
|       UdpServerLoop
+---------------------------------------------------------------------*/
static void
UdpServerLoop(int port)
{
    NPT_UdpSocket listener;

    // info
    if (Options.verbose) {
        NPT_Debug("listening on port %d\n", port);
    }

    NPT_Result result = listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, port));
    if (NPT_FAILED(result)) {
        NPT_Debug("ERROR: Bind() failed (%d)\n", result);
    }

    // packet loop
    NPT_DataBuffer packet(32768);
    NPT_SocketAddress address;

    do {
        result = listener.Receive(packet, &address);
        if (NPT_SUCCEEDED(result)) {
            if (Options.verbose) {
                NPT_String ip = address.GetIpAddress().ToString();
                NPT_Debug("Received %d bytes from %s:%d\n", packet.GetDataSize(), ip.GetChars(), address.GetPort());
            }

            listener.Send(packet, &address);
        }
    } while (NPT_SUCCEEDED(result));
}
Esempio n. 2
0
/*----------------------------------------------------------------------
|       GetEndPointStreams
+---------------------------------------------------------------------*/
static NPT_Result
GetEndPointStreams(EndPoint*                  endpoint, 
                   NPT_InputStreamReference*  input_stream,
                   NPT_OutputStreamReference* output_stream)
{
    // default return values
    if (input_stream) *input_stream = NULL;
    if (output_stream) *output_stream = NULL;

    switch (endpoint->type) {
      case ENDPOINT_TYPE_UDP_CLIENT:
        {
            NPT_UdpSocket sender;

            // info
            if (Options.verbose) {
                NPT_Debug("sending to %s on port %d\n",
                         endpoint->info.udp_client.hostname,
                         endpoint->info.udp_client.port);
            }

            // resolve name
            NPT_IpAddress address;
            NPT_CHECK(address.ResolveName(endpoint->info.udp_client.hostname));

            // connect socket
            NPT_CHECK(sender.Connect(NPT_SocketAddress(address,
                                                       endpoint->info.udp_client.port)));

            // get the streams
            if (input_stream) {
                NPT_CHECK(sender.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(sender.GetOutputStream(*output_stream));
            }
                        
            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_TCP_CLIENT:
        {
            NPT_TcpClientSocket client;

            // info
            if (Options.verbose) {
                NPT_Debug("connecting to %s on port %d\n", 
                         endpoint->info.tcp_client.hostname,
                         endpoint->info.tcp_client.port);
            }

            // resolve the name
            NPT_IpAddress address;
            NPT_CHECK(address.ResolveName(endpoint->info.tcp_client.hostname));

            // connect
            NPT_CHECK(client.Connect(NPT_SocketAddress(address,
                                                       endpoint->info.tcp_client.port)));

            // info
            if (Options.verbose) {
                NPT_Debug("connected\n"); 
            }

            // get the streams
            if (input_stream) {
                NPT_CHECK(client.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(client.GetOutputStream(*output_stream));
            }
            
            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_MULTICAST_CLIENT:
        {
            NPT_UdpMulticastSocket sender;

            // info
            if (Options.verbose) {
                NPT_Debug("sending to %s on port %d\n",
                          endpoint->info.multicast_client.groupname,
                          endpoint->info.multicast_client.port);
            }

            // set time to live
            NPT_CHECK(sender.SetTimeToLive(endpoint->info.multicast_client.ttl));

            // resolve name
            NPT_IpAddress address;
            NPT_CHECK(address.ResolveName(endpoint->info.multicast_client.groupname));

            // connect socket
            NPT_CHECK(sender.Connect(NPT_SocketAddress(address, endpoint->info.multicast_client.port)));

            // get the streams
            if (input_stream) {
                NPT_CHECK(sender.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(sender.GetOutputStream(*output_stream));
            }

            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_UDP_SERVER:
        {
            NPT_UdpSocket listener;

            // info
            if (Options.verbose) {
                NPT_Debug("listening on port %d", endpoint->info.udp_server.port);
            }

            // listen on port, any addr
            NPT_CHECK(listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, endpoint->info.udp_server.port)));

            // get the streams
            if (input_stream) {
                NPT_CHECK(listener.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(listener.GetOutputStream(*output_stream));
            }

            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_TCP_SERVER:
        {
            NPT_TcpServerSocket server;
            NPT_Socket*         client;

            // info
            if (Options.verbose) {
                NPT_Debug("waiting for client on port %d\n", 
                          endpoint->info.tcp_server.port);
            }

            // bind to the address
            NPT_CHECK(server.Bind(NPT_SocketAddress(NPT_IpAddress::Any, 
                        endpoint->info.tcp_server.port)));

            // wait for connection
            NPT_CHECK(server.WaitForNewClient(client));

            // info
            if (Options.verbose) {
                NPT_Debug("client connected\n");
            }

            // get the streams
            if (input_stream) {
                NPT_CHECK(client->GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(client->GetOutputStream(*output_stream));
            }

            delete client;
            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_MULTICAST_SERVER:
        {
            NPT_UdpMulticastSocket listener;

            // info
            if (Options.verbose) {
                NPT_Debug("listening on port %d\n", endpoint->info.multicast_server.port);
            }

            // listen on port, any addr
            NPT_CHECK(listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, endpoint->info.multicast_server.port)));

            // info
            if (Options.verbose) {
                NPT_Debug("joining multicast group %s\n", endpoint->info.multicast_server.groupname);
            }

            // resolve name
            NPT_IpAddress address;
            NPT_CHECK(address.ResolveName(endpoint->info.multicast_server.groupname));

            // join the group
            NPT_CHECK(listener.JoinGroup(address));

            // get the streams
            if (input_stream) {
                NPT_CHECK(listener.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(listener.GetOutputStream(*output_stream));
            }

            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_FILE:
        {
            // create a file object
            NPT_File file(endpoint->info.file.name);
            if (endpoint->direction == ENDPOINT_DIRECTION_IN) {
                NPT_CHECK(file.Open(NPT_FILE_OPEN_MODE_READ | 
                                    NPT_FILE_OPEN_MODE_UNBUFFERED));
            } else {
                NPT_CHECK(file.Open(NPT_FILE_OPEN_MODE_WRITE | 
                                    NPT_FILE_OPEN_MODE_CREATE|
                                    NPT_FILE_OPEN_MODE_UNBUFFERED));
            }

            // get the streams
            if (input_stream) {
                NPT_CHECK(file.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(file.GetOutputStream(*output_stream));
            }

            return NPT_SUCCESS;
        }
        break;

      case ENDPOINT_TYPE_SERIAL_PORT:
        {
            // create a serial port object
            NPT_SerialPort serial_port(endpoint->info.serial_port.name);
            NPT_CHECK(serial_port.Open(endpoint->info.serial_port.speed));

            // get the streams
            if (input_stream) {
                NPT_CHECK(serial_port.GetInputStream(*input_stream));
            }
            if (output_stream) {
                NPT_CHECK(serial_port.GetOutputStream(*output_stream));
            }

            return NPT_SUCCESS;
        }
        break;
    }

    return NPT_SUCCESS;
}