void CACMStream::Convert(LPVOID src, DWORD size)
{
m_mmr = 0;
if (m_hdr->fdwStatus & ACMSTREAMHEADER_STATUSF_PREPARED)
{
if (src != m_hdr->pbSrc || size > m_hdr->dwSrcUser)
{
Unprepare();
Prepare(src, size);
}
}
else
{
Prepare(src, size);
}
m_mmr = acmStreamConvert(m_strm,
m_hdr,
ACM_STREAMCONVERTF_END|
ACM_STREAMCONVERTF_START);
if (m_mmr)
raiseError(m_mmr, "Error during conversion");
}
void
ManagedWidget::Clear()
{
Unprepare();
delete widget;
widget = NULL;
}
BOOL CTcpSocket::Call(ULONG uPeerIP, HWND hWnd, int iPort)
{
SOCKADDR_IN addr;
int err;
m_hWnd = hWnd;
m_iPort = (iPort == 0) ? TCP_DEFAULT_PORT : iPort;
if (Prepare() == FALSE) return FALSE;
// Create a socket for this connection.
m_socket = WSASocket(FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, FROM_PROTOCOL_INFO, m_pTcpInfo, 0, 0);
if (m_socket == INVALID_SOCKET)
{
OutputDebugString(_T("Could not open a socket in Call\n"));
goto Error;
}
else
{ // Set up socket for windows message event notification.
WSAAsyncSelect(m_socket, m_hWnd, WM_TCP_SOCKET_CONNECT, FD_CONNECT);
}
addr.sin_family = AF_INET;
addr.sin_port = htons(m_iPort);
addr.sin_addr.s_addr = uPeerIP;
err = WSAConnect(m_socket, (SOCKADDR *)&addr, m_pTcpInfo->iMaxSockAddr, NULL, NULL, NULL, NULL);
if (err == SOCKET_ERROR)
{
err = WSAGetLastError();
if (err != WSAEWOULDBLOCK)
{
OutputDebugString(_T("WSAConnect failed\n"));
goto Error;
}
}
else
{
OutputDebugString(_T("WSAConnect should have returned SOCKET_ERROR\n"));
goto Error;
}
m_uPeerIP = addr.sin_addr.s_addr;
m_strPeerName = inet_ntoa(addr.sin_addr);
OutputDebugString(_T("Calling ") + m_strPeerName + _T("\n"));
return TRUE;
Error:
Unprepare();
return FALSE;
}
/**
* Delete the #Widget or #Window object.
*/
void Delete() {
Unprepare();
if (type == Type::WIDGET) {
assert(widget != nullptr);
assert(window == nullptr);
assert(!shown);
assert(!prepared);
delete widget;
return;
}
delete window;
}
ULONG CTcpSocket::OnConnect(LPARAM lParam)
{
int err;
DWORD dwThreadId; // needed for CreateThread
err = WSAGETSELECTERROR(lParam);
// Check to see if there was an error on the connection attempt.
if (err)
{
// Some kind of error occurred.
if (err == WSAECONNREFUSED)
{
OutputDebugString(m_strPeerName + _T(" 处没有应用程序应答\n"));
}
else
{
OutputDebugString(m_strPeerName + _T(" 没有在网络上\n"));
}
goto Error;
}
WSAAsyncSelect(m_socket, m_hWnd, 0, 0);
// Put Connection in Event Object Notification Mode.
WSAEventSelect(m_socket, m_hNetEvent, FD_READ | FD_WRITE | FD_CLOSE);
// Start the I/O thread, and save the thread handle.
m_hIOThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadFunc, this, 0, &dwThreadId);
if (m_hIOThread == NULL)
{
OutputDebugString(_T("CreateThread() failed in OnConnect()\n"));
goto Error;
}
OutputDebugString(m_strPeerName + _T(" joined the meeting\n"));
return m_uPeerIP;
Error:
Unprepare();
return 0;
}
BOOL CTcpSocket::Prepare()
{
m_hNetEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
m_hOutputEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
m_hQuitEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (!m_hNetEvent || !m_hOutputEvent || !m_hQuitEvent)
{
OutputDebugString(_T("CreateEvent fail in Prepare connection data\n"));
goto Error;
}
m_eventArray[0] = m_hNetEvent;
m_eventArray[1] = m_hOutputEvent;
m_eventArray[2] = m_hQuitEvent;
return TRUE;
Error:
Unprepare();
return FALSE;
}
CACMStream::~CACMStream()
{
Unprepare();
Close();
}
// prepares the comm interface for use - MUST be invoked before any data can be sent/received
void CCommunicationInterface::PrepareForUse(BOOL bUseNetwork, BOOL bClient)
{
// clear the network conditions emulation data
_pbsSend.Clear();
_pbsRecv.Clear();
// if the network is already initialized, shut it down before proceeding
if (cm_bNetworkInitialized) {
Unprepare();
}
// make sure winsock is off (could be on if enumeration was triggered)
GameAgent_EnumCancel();
EndWinsock();
if (bUseNetwork) {
CPrintF(TRANSV("Initializing TCP/IP...\n"));
if (bClient) {
CPrintF(TRANSV(" opening as client\n"));
} else {
CPrintF(TRANSV(" opening as server\n"));
}
// make sure winsock is on
InitWinsock();
// no address by default
cm_ulLocalHost = 0;
// if there is a desired local address
if (net_strLocalHost!="") {
CPrintF(TRANSV(" user forced local address: %s\n"), (const char*)net_strLocalHost);
// use that address
cm_strName = net_strLocalHost;
cm_ulLocalHost = StringToAddress(cm_strName);
// if invalid
if (cm_ulLocalHost==0 || cm_ulLocalHost==-1) {
cm_ulLocalHost=0;
// report it
CPrintF(TRANSV(" requested local address is invalid\n"));
}
}
// if no valid desired local address
CPrintF(TRANSV(" getting local addresses\n"));
// get default
char hostname[256];
gethostname(hostname, sizeof(hostname)-1);
cm_strName = hostname;
// lookup the host
HOSTENT *phe = gethostbyname(cm_strName);
// if succeeded
if (phe!=NULL) {
// get the addresses
cm_strAddress = "";
for(INDEX i=0; phe->h_addr_list[i]!=NULL; i++) {
if (i>0) {
cm_strAddress += ", ";
}
cm_strAddress += inet_ntoa(*(const in_addr *)phe->h_addr_list[i]);
}
}
CPrintF(TRANSV(" local addresses: %s (%s)\n"), (const char *) cm_strName, (const char *) cm_strAddress);
CPrintF(TRANSV(" port: %d\n"), net_iPort);
// try to open master UDP socket
try {
OpenSocket_t(cm_ulLocalHost, bClient?0:net_iPort);
cci_pbMasterInput.pb_ppbsStats = NULL;
cci_pbMasterOutput.pb_ppbsStats = NULL;
cm_ciBroadcast.SetLocal(NULL);
CPrintF(TRANSV(" opened socket: \n"));
} catch (char *strError) {
CPrintF(TRANSV(" cannot open UDP socket: %s\n"), strError);
}
}
cm_bNetworkInitialized = cci_bWinSockOpen;
};
CTcpSocket::~CTcpSocket()
{
if (m_socket != INVALID_SOCKET)
Unprepare();
}
void CTcpSocket::OnClose()
{
Unprepare();
}
ULONG CTcpSocket::Accept(SOCKET socketListen, LPARAM lParam, HWND hWnd, int iPort)
{
SOCKADDR_IN addr;
int iAddrLen = sizeof(addr);
int err;
DWORD dwThreadId; // needed for CreateThread
err = WSAGETSELECTERROR(lParam);
// Check to see if there was an error on the connection attempt.
if (err)
{ // Some kind of error occurred.
if (err == WSAENETDOWN)
{
OutputDebugString(_T("The network is down\n"));
}
else
{
OutputDebugString(_T("Unknown error on FD_ACCEPT\n"));
}
return 0;
}
m_hWnd = hWnd;
m_iPort = (iPort == 0) ? TCP_DEFAULT_PORT : iPort;
if (Prepare() == FALSE) return 0;
m_socket = WSAAccept(socketListen, (SOCKADDR *)&addr, &iAddrLen, NULL, (DWORD)NULL);
if (m_socket == INVALID_SOCKET)
{
err = WSAGetLastError();
if (err != WSAECONNREFUSED)
{
OutputDebugString(_T("WSAAccept failed\n"));
goto Error;
}
else
{
OutputDebugString(_T("The connection attempt has been refused\n"));
goto Error;
}
}
m_uPeerIP = addr.sin_addr.s_addr;
m_strPeerName = inet_ntoa(addr.sin_addr);
WSAAsyncSelect(m_socket, m_hWnd, 0, 0);
// Put Connection in Event Object Notification Mode.
WSAEventSelect(m_socket, m_hNetEvent, FD_READ | FD_WRITE | FD_CLOSE);
// Start the I/O thread, and save the thread handle.
m_hIOThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ThreadFunc, this, 0, &dwThreadId);
if (m_hIOThread == NULL)
{
OutputDebugString(_T("CreateThread() failed in HandleAcceptMessage()\n"));
goto Error;
}
OutputDebugString(m_strPeerName + _T(" joined the meeting\n"));
return m_uPeerIP;
Error:
Unprepare();
return 0;
}
