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// XnSyncServerSocketConnection.cpp
#include "XnSyncServerSocketConnection.h"
#include <OpenNI.h>
namespace xn
{
SyncServerSocketListener::SyncServerSocketListener()
{
// Nullify all sockets
m_hListenControlSocket = NULL;
m_hListenDataInSocket = NULL;
m_nDataOutSockets = 0;
m_nMaxControlPacketSize = 0;
m_nMaxDataOutPacketSize = 0;
m_nMaxDataInPacketSize = 0;
for (XnUInt32 nDataOutSocket = 0; nDataOutSocket < MAX_DATAOUT_SOCKETS; nDataOutSocket++)
{
m_arrhListenDataOutSockets[nDataOutSocket] = NULL;
}
// Init control connection pool
for (XnUInt32 nConn = 0; nConn < MAX_SERVER_CONTROL_CONNECTIONS; nConn++)
{
m_controlConnPool[nConn].fActive = false;
}
}
SyncServerSocketListener::~SyncServerSocketListener()
{
if (m_hListenControlSocket || m_hListenDataInSocket)
{
Shutdown();
}
}
XnStatus SyncServerSocketListener::Init(const XnChar* strIP,
XnUInt16 nControlPort,
XnUInt16 nInputPort,
XnUInt16 nFirstDataPort,
XnUInt16 nDataOutSockets,
XnUInt16 nMaxColntrolPacketSize,
XnUInt16 nMaxDataOutPacketSize,
XnUInt16 nMaxDataInPacketSize)
{
XnStatus rc = XN_STATUS_OK;
XN_ASSERT(!m_hListenControlSocket);
XN_ASSERT(!m_hListenDataInSocket);
XN_ASSERT(nDataOutSockets < MAX_DATAOUT_SOCKETS);
m_nMaxControlPacketSize = nMaxColntrolPacketSize;
m_nMaxDataOutPacketSize = nMaxDataOutPacketSize;
m_nMaxDataInPacketSize = nMaxDataInPacketSize;
m_nDataOutSockets = nDataOutSockets;
const XnUInt16 NON_DATA_OUT_CONNECTIONS = 2;
XnUInt16 nSocketsToCreate = NON_DATA_OUT_CONNECTIONS + nDataOutSockets; // Control + + All data outs
for (XnUInt16 nSockToCreate = 0; nSockToCreate < nSocketsToCreate; nSockToCreate++)
{
XN_SOCKET_HANDLE newSocket = NULL;
XnUInt16 nCurrSocketPort = nSockToCreate == 0 ? nControlPort : // First create control socket
nSockToCreate == 1 ? nInputPort : // Input port
nFirstDataPort + (nSockToCreate - NON_DATA_OUT_CONNECTIONS); // Output ports
// Create listen socket for control connections:
rc = xnOSCreateSocket(XN_OS_TCP_SOCKET, strIP, nCurrSocketPort, &newSocket);
if (rc != XN_STATUS_OK)
{
Shutdown();break;
}
rc = xnOSBindSocket(newSocket);
if (rc != XN_STATUS_OK)
{
Shutdown();break;
}
rc = xnOSListenSocket(newSocket);
if (rc != XN_STATUS_OK)
{
Shutdown();break;
}
// Store the socket
if (nSockToCreate == 0) m_hListenControlSocket = newSocket;
else if (nSockToCreate == 1) m_hListenDataInSocket = newSocket;
else
{
XnUInt32 nOutSocketIndex = nSockToCreate - NON_DATA_OUT_CONNECTIONS;
XN_ASSERT(nOutSocketIndex < MAX_DATAOUT_SOCKETS);
m_arrhListenDataOutSockets[nOutSocketIndex] = newSocket;
}
}
// Set the timeout for the control connection to something low enough to allow many clients on one thread
SyncSocketConnection::RECEIVE_TIMEOUT = 50;
return rc;
}
void SyncServerSocketListener::Shutdown()
{
if (m_hListenControlSocket)
{
xnOSCloseSocket(m_hListenControlSocket);
m_hListenControlSocket = NULL;
}
if (m_hListenDataInSocket)
{
xnOSCloseSocket(m_hListenDataInSocket);
m_hListenDataInSocket = NULL;
}
for (XnUInt32 nOutConn = 0; nOutConn < MAX_SERVER_CONTROL_CONNECTIONS; nOutConn++)
{
if (m_arrhListenDataOutSockets[nOutConn])
{
xnOSCloseSocket(m_arrhListenDataOutSockets[nOutConn]);
m_arrhListenDataOutSockets[nOutConn] = NULL;
}
}
}
// Returns SyncServerSocketConnection
XnStatus SyncServerSocketListener::GetControlConnection(ISyncIOConnection*& pStream)
{
XN_SOCKET_HANDLE hClientSocket = NULL;
// Find free connection and destroy terminated connections
const XnUInt32 FREECONN_NA = (XnUInt32)-1;
XnUInt32 nFreeConn = FREECONN_NA;
for (XnUInt32 nConn = 0; nConn < MAX_SERVER_CONTROL_CONNECTIONS; nConn++)
{
PoolControlConnection& CurrConn = m_controlConnPool[nConn];
// Deactivate disconnected connections
if (CurrConn.fActive)
{
if (!CurrConn.syncConnection.IsConnected())
{
CurrConn.fActive = false;
}
}
// See if we can use this connection
if (!CurrConn.fActive && nFreeConn == FREECONN_NA)
{
nFreeConn = nConn;
}
}
// See if we got inactive connection from the pool
if (nFreeConn == FREECONN_NA)
{
return XN_STATUS_INTERNAL_BUFFER_TOO_SMALL;
}
// Accept the connection (blocking)
XnStatus rc = xnOSAcceptSocket(m_hListenControlSocket, &hClientSocket, XN_WAIT_INFINITE);
if (rc == XN_STATUS_OK)
{
XN_ASSERT(m_hListenControlSocket);
PoolControlConnection& FreeConn = m_controlConnPool[nFreeConn];
FreeConn.syncConnection.m_hSocket = hClientSocket;
FreeConn.syncConnection.m_nMaxPacketSize = m_nMaxControlPacketSize;
FreeConn.fActive = true;
pStream = &FreeConn.syncConnection;
}
return rc;
}
// Creates a NEW SyncServerSocketConnection
XnStatus SyncServerSocketListener::CreateOutputDataConnection(int nID, IOutputConnection*& pConn)
{
XN_SOCKET_HANDLE hClientSocket = NULL;
XN_ASSERT(nID < MAX_DATAOUT_SOCKETS);
XN_ASSERT(m_arrhListenDataOutSockets[nID]);
// Accept the connection (blocking)
XnStatus rc = xnOSAcceptSocket(m_arrhListenDataOutSockets[nID], &hClientSocket, XN_WAIT_INFINITE);
if (rc == XN_STATUS_OK)
{
XN_ASSERT(hClientSocket);
SyncServerSocketConnection* pSocket = XN_NEW(SyncServerSocketConnection);
pSocket->m_hSocket = hClientSocket;
pSocket->m_nMaxPacketSize = m_nMaxDataOutPacketSize;
pConn = pSocket;
}
return rc;
}
// Creates a NEW SyncServerSocketConnection
XnStatus SyncServerSocketListener::CreateInputDataConnection(IAsyncInputConnection*& pStream)
{
XN_SOCKET_HANDLE hClientSocket = NULL;
XN_ASSERT(m_hListenDataInSocket);
// Accept the connection (blocking)
XnStatus rc = xnOSAcceptSocket(m_hListenDataInSocket, &hClientSocket, XN_WAIT_INFINITE);
if (rc == XN_STATUS_OK)
{
XN_ASSERT(hClientSocket);
ASyncServerSocketConnection* pSocket = XN_NEW(ASyncServerSocketConnection);
pSocket->m_hSocketFromListener = hClientSocket;
rc = pSocket->Init("", 0, m_nMaxDataInPacketSize);
if (rc != XN_STATUS_OK)
{
XN_DELETE(pSocket);
xnOSCloseSocket(hClientSocket);
}
pStream = pSocket;
}
return rc;
}
}
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