WORD wVersionRequested = MAKEWORD(2, 2);
WSADATA wsaData;
if(0 != WSAStartup(wVersionRequested, &wsaData))
{
printf("WSAStartup failed with error: %d/n", GetLastError());
return EXIT_FAILURE;
}
if(2 != HIBYTE(wsaData.wVersion) || 2 != LOBYTE(wsaData.wVersion))
{
printf("Socket version not supported./n");
WSACleanup();
return EXIT_FAILURE;
}
g_UdpRecSock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if(INVALID_SOCKET == g_UdpRecSock)
{
printf("socket failed with error: %d/n", WSAGetLastError());
WSACleanup();
return EXIT_FAILURE;
}
SOCKADDR_IN addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
addr.sin_port = htonl(INADDR_ANY);//tons(atoi("13400"));//htonl(INADDR_BROADCAST);
if(SOCKET_ERROR == bind(g_UdpRecSock, (LPSOCKADDR)&addr, sizeof(addr)))
{
int i = WSAGetLastError();
printf("bind failed with error: %d/n", WSAGetLastError());
if(INVALID_SOCKET != g_UdpRecSock)
{
closesocket(g_UdpRecSock);
g_UdpRecSock = INVALID_SOCKET;
}
WSACleanup();
return EXIT_FAILURE;
}
char szBuf[MAX_BUFFER] = {0};
SOCKADDR_IN remote;
memset(&remote, 0, sizeof(remote));
int len = sizeof(remote);
char strTemp[1024] = {0};
while(TRUE)
{
if(SOCKET_ERROR == recvfrom(g_UdpRecSock, szBuf, MAX_BUFFER, 0, (LPSOCKADDR)&remote, &len))
{
int i = WSAGetLastError();
strerrorid.Format("udp Recv error ID:%d",i);
m_UdpRecThread->m_listbox.AddString(strerrorid);
printf("recvfrom failed with error: %d/n", WSAGetLastError());
// ExitThread(0);
break;
}
AscToHex(strTemp,(unsigned char *)szBuf, sizeof(szBuf));
m_UdpDebug.Format("Recv->%s",strTemp);
m_UdpRecThread->m_listbox.AddString(m_UdpDebug);
}
