int ReceiveMsgSize(SOCKET socket, int* size)
{
int retval = NVN_NOERR;
int valid = 0;
if(NVN_NOERR == ValidSocket(socket, &valid) && valid && size)
{
char buf[4];
int received = 0;
int result = 0;
while(received < 4)
{
result = recv(socket, buf + received, 4 - received, 0);
if(result < 0)
{
PrintSocketError("recv failed");
retval = NVN_ECOMMFAIL;
break;
}
else if(result == 0)
{
retval = NVN_ECLIENTGONE;
break;
}
else
{
received += result;
}
}
if(received == 4)
{
if(sizeof(int) == 4)
{
*size = *((int*)buf);
*size = ntohl(*size);
}
else
{
retval = NVN_ERROR;
fprintf(stderr, "Architecture not supported: sizeof(int) != 4\n");
}
}
}
else
{
retval = NVN_EINVARGS;
}
return retval;
}
BOOL CUDPSocketAsync::Close()
{
try
{
//Quit if not ok
if (!ValidSocket())
return FALSE;
//Kill the timer
CAsyncSocket::SocketClosing();
//Remove from socket list
RemoveSocketFromList();
//Delegate call
return CUDPSocket::Close();
}
ERROR_HANDLER_RETURN("Close",FALSE)
}
int SendMsgSize(SOCKET socket, int size)
{
int retval = NVN_NOERR;
char buf[4];
int sent = 0;
int result = 0;
int valid = 0;
if(NVN_NOERR == ValidSocket(socket, &valid) && valid)
{
if(sizeof(int) == 4)
{
((int*)buf)[0] = htonl(size);
}
else
{
retval = NVN_ERROR;
fprintf(stderr, "Architecture not supported: sizeof(int) != 4\n");
}
while(sent < 4)
{
result = send(socket, buf + sent, 4 - sent, 0);
if(result <= 0)
{
retval = NVN_ECOMMFAIL;
PrintSocketError("send failed");
break;
}
else
{
sent += result;
}
}
}
else
{
retval = NVN_EINVARGS;
}
return retval;
}
// Create and bind the DNS Proxy Skts for use
mDNSexport void mDNSPlatformInitDNSProxySkts(mDNS *const m, ProxyCallback UDPCallback, ProxyCallback TCPCallback)
{
int dpskt[4];
dpskt[0] = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
dpskt[1] = socket(AF_INET6, SOCK_DGRAM, IPPROTO_UDP);
dpskt[2] = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
dpskt[3] = socket(AF_INET6, SOCK_STREAM, IPPROTO_TCP);
// Close all DNS Proxy skts in case any of them are invalid
if (!ValidSocket(dpskt[0]) || !ValidSocket(dpskt[1]) ||
!ValidSocket(dpskt[2]) || !ValidSocket(dpskt[3]))
{
if (ValidSocket(dpskt[0]))
close(dpskt[0]);
if (ValidSocket(dpskt[1]))
close(dpskt[1]);
if (ValidSocket(dpskt[2]))
close(dpskt[2]);
if (ValidSocket(dpskt[3]))
close(dpskt[3]);
}
BindDPSocket(dpskt[0], AF_INET);
BindDPSocket(dpskt[1], AF_INET6);
BindDPSocket(dpskt[2], AF_INET);
BindDPSocket(dpskt[3], AF_INET6);
LogInfo("mDNSPlatformInitDNSProxySkts: Opened Listener Sockets for DNS Proxy : %d, %d, %d, %d",
dpskt[0], dpskt[1], dpskt[2], dpskt[3]);
m->p->UDPProxyCallback = UDPCallback;
m->p->TCPProxyCallback = TCPCallback;
SetupDNSProxySkts(m, dpskt);
}
BOOL CTCPSocketAsync::Close()
{
try
{
//Quit if not ok
if (!ValidSocket())
return FALSE;
//Delegate to remove socket
if (m_pLinkedSocket &&
m_bCloseEventsOnly)
m_pLinkedSocket->Close();
//Kill the timer
CAsyncSocket::SocketClosing();
//Remove from socket list
RemoveSocketFromList();
//Done
return CTCPSocket::Close();
}
ERROR_HANDLER_RETURN("Close",FALSE)
}
