//
// Check for the host and port arguments //
if (argc != 3) { fprintf(stderr,\ return; }
nPort = atoi(argv[2]); //
// Initialize WinSock and check the version //
nRet = WSAStartup(wVersionRequested, &wsaData); if (wsaData.wVersion != wVersionRequested) { fprintf(stderr,\ return; } //
// Go do the stuff a stream client does //
StreamClient(argv[1], nPort); //
// Release WinSock //
WSACleanup(); }
////////////////////////////////////////////////////////////
void StreamClient(char *szServer, short nPort) {
printf(\ szServer, nPort);
//
// Find the server //
LPHOSTENT lpHostEntry;
lpHostEntry = gethostbyname(szServer); if (lpHostEntry == NULL) {
PRINTERROR(\ return;
45
} //
// Create a TCP/IP stream socket //
SOCKET theSocket;
theSocket = socket(AF_INET, // Address family SOCK_STREAM, // Socket type IPPROTO_TCP); // Protocol if (theSocket == INVALID_SOCKET) { PRINTERROR(\ return; } //
// Fill in the address structure //
SOCKADDR_IN saServer;
saServer.sin_family = AF_INET;
saServer.sin_addr = *((LPIN_ADDR)*lpHostEntry->h_addr_list); // ^ Server's address saServer.sin_port = htons(nPort); // Port number from command line //
// connect to the server //
int nRet;
nRet = connect(theSocket, // Socket (LPSOCKADDR)&saServer, // Server address sizeof(struct sockaddr));// Length of server address structure if (nRet == SOCKET_ERROR) { PRINTERROR(\ closesocket(theSocket); return; } //
// Send data to the server //
char szBuf[256];
strcpy(szBuf, \ nRet = send(theSocket, // Connected socket szBuf, // Data buffer strlen(szBuf)+1, // Length of data 0); // Flags
46
}
if (nRet == SOCKET_ERROR) { PRINTERROR(\ closesocket(theSocket); return; } //
// Wait for a reply //
nRet = recv(theSocket, szBuf, sizeof(szBuf), 0); if (nRet == SOCKET_ERROR) { PRINTERROR(\ closesocket(theSocket); return; } //
// Display the received data //
printf(\closesocket(theSocket); return;
// Connected socket // Receive buffer
// Size of receive buffer // Flags
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