#include "stdafx.h"#include "TVServerConnection.h"TVServerConnection::TVServerConnection(){}int TVServerConnection::Connect(char *host){ int nret; init(); // Store information about the server LPHOSTENT hostEntry; hostEntry = gethostbyname(host); cout << "Host entry is... " << hostEntry << endl; if (!hostEntry) { WSACleanup(); sock = NULL; return NETWORK_ERROR; } cout << "About to make a socket\n"; sock = ::socket(AF_INET, // Go over TCP/IP SOCK_STREAM, // This is a stream-oriented socket IPPROTO_TCP); // Use TCP rather than UDP cout << "Sock is " << sock << endl; if (sock == INVALID_SOCKET) { ::WSACleanup(); sock = NULL; return NETWORK_ERROR; } cout << "Socket successfull.. about to get in stuff..\n"; // Fill a SOCKADDR_IN struct with address information SOCKADDR_IN serverInfo; serverInfo.sin_family = AF_INET; // At this point, we've successfully retrieved vital information about the server, // including its hostname, aliases, and IP addresses. Wait; how could a single // computer have multiple addresses, and exactly what is the following line doing? // See the explanation below. serverInfo.sin_addr = *((LPIN_ADDR)*hostEntry->h_addr_list); printf("Sin _ addr is %x\n", serverInfo.sin_addr.s_host); serverInfo.sin_port = ::htons(this->PORT); // Change to network-byte order and // insert into port field cout << "Sin _port is " << serverInfo.sin_port << endl; cout << "About to connect\n"; // Connect to the server nret = ::connect(sock, (LPSOCKADDR)&serverInfo, sizeof(struct sockaddr)); cout << "Connect returns " << nret << endl; if (nret == SOCKET_ERROR) { nret = WSAGetLastError(); ReportError(nret, "connect()"); ::WSACleanup(); sock= NULL; return NETWORK_ERROR; } // Successfully connected! cout << "success connecting\n"; return NETWORK_OK;}void TVServerConnection::Disconnect(){ // Send/receive, then cleanup: ::closesocket(sock); ::WSACleanup();}int TVServerConnection::ReadData(char *data, int len){}int TVServerConnection::SendData(char *data, int len){ while(len > 0) { int nret = send(sock, data, len, 0); if (nret == SOCKET_ERROR) { nret = NETWORK_ERROR; // Get a specific code // Handle accordingly return NETWORK_ERROR; } else { // nret contains the number of bytes sent len -= nret; data += nret; } } return NETWORK_OK;}int TVServerConnection::init(){ WORD sockVersion; WSADATA wsaData; int nret; sockVersion = MAKEWORD(2, 2); // We begin by initializing Winsock ::WSAStartup(sockVersion, &wsaData); return 0;}void TVServerConnection::ReportError(int errorCode, const char *whichFunc) { char errorMsg[92]; // Declare a buffer to hold // the generated error message ZeroMemory(errorMsg, 92); // Automatically NULL-terminate the string // The following line copies the phrase, whichFunc string, and integer errorCode into the buffer sprintf(errorMsg, "Call to %s returned error %d!", (char *)whichFunc, errorCode); cout << "ERROR IS " << errorMsg << endl;}