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/*=========================================================================
Program: OpenIGTLink -- Example for String Echo Server Program
Language: C++
Copyright (c) Insight Software Consortium. All rights reserved.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#include <iostream>
#include <math.h>
#include <cstdlib>
#include "igtlOSUtil.h"
#include "igtlStringMessage.h"
#include "igtlServerSocket.h"
int main(int argc, char* argv[])
{
//------------------------------------------------------------
// Parse Arguments
if (argc != 2) // check number of arguments
{
// If not correct, print usage
std::cerr << "Usage: " << argv[0] << " <port>" << std::endl;
std::cerr << " <port> : Port # (18944 in Slicer default)" << std::endl;
exit(0);
}
int port = atoi(argv[1]);
igtl::ServerSocket::Pointer serverSocket = igtl::ServerSocket::New();
int r = serverSocket->CreateServer(port);
if (r < 0)
{
std::cerr << "Cannot create a server socket." << std::endl;
exit(0);
}
igtl::Socket::Pointer socket;
while (1)
{
//------------------------------------------------------------
// Waiting for Connection
socket = serverSocket->WaitForConnection(1000);
igtl::MessageHeader::Pointer hdrMsg = igtl::MessageHeader::New();
while (socket.IsNotNull() && socket->GetConnected())
{
hdrMsg->InitPack();
int r = socket->Receive(hdrMsg->GetPackPointer(), hdrMsg->GetPackSize());
// check message
if (r == 0)
{
socket->CloseSocket();
continue;
}
if (r != hdrMsg->GetPackSize())
continue;
// get data
hdrMsg->Unpack();
igtl::StringMessage::Pointer strMsg(igtl::StringMessage::New());
strMsg->SetMessageHeader(hdrMsg);
strMsg->AllocatePack();
socket->Receive(strMsg->GetPackBodyPointer(), strMsg->GetPackBodySize());
int c = strMsg->Unpack();
// echo message back
std::cout << "Echoing: " << strMsg->GetString() << std::endl;
strMsg->SetDeviceName("StringEchoServer");
strMsg->Pack();
socket->Send(strMsg->GetPackPointer(), strMsg->GetPackSize());
}
}
//------------------------------------------------------------
// Close connection (The example code never reachs to this section ...)
socket->CloseSocket();
}
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