sockets (c#)

#include <iostream> #include <winsock.h> #include <windows.h> #include <vector> using namespace std; #define SERVER_SOCKET_ERROR 1 #define SOCKET_OK 0 #pragma comment(lib, "wsock32.lib") void socketError(char*); char * readline(SOCKET *s); int main() { WORD sockVersion; WSADATA wsaData; int rVal; sockVersion = MAKEWORD(1,1); //start dll WSAStartup(sockVersion, &wsaData); //create socket SOCKET s = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if(s == INVALID_SOCKET) { socketError("Failed socket()"); WSACleanup(); return SERVER_SOCKET_ERROR; } //fill in sockaddr_in struct SOCKADDR_IN sin; sin.sin_family = PF_INET; sin.sin_port = htons(8888); sin.sin_addr.s_addr = INADDR_ANY; //bind the socket rVal = bind(s, (LPSOCKADDR)&sin, sizeof(sin)); if(rVal == SOCKET_ERROR) { socketError("Failed bind()"); WSACleanup(); return SERVER_SOCKET_ERROR; } //get socket to listen rVal = listen(s, 2); if(rVal == SOCKET_ERROR) { socketError("Failed listen()"); WSACleanup(); return SERVER_SOCKET_ERROR; } //wait for a client SOCKET client; cout << "waiting for newclient" << endl; client = accept(s, NULL, NULL); cout << "newclient found" << endl; if(client == INVALID_SOCKET) { socketError("Failed accept()"); WSACleanup(); return SERVER_SOCKET_ERROR; } readline(&client); //close process closesocket(client); closesocket(s); WSACleanup(); cout << "closing down"<< endl; return SOCKET_OK; }; char * readline(SOCKET *client) { vector<char> theVector; char buffer; int rVal; while(true) { rVal = recv(*(client), &buffer, 1, 0); if(rVal == SOCKET_ERROR) { int errorVal = WSAGetLastError(); if(errorVal == WSAENOTCONN) { socketError("Socket not connected!"); } socketError("Failed recv()"); WSACleanup(); } if(buffer == '\n') { char *data = new char[theVector.size() + 1]; memset(data, 0, theVector.size()+1); for(int i=0; i<theVector.size(); i+=1) { data[i] = theVector[i]; } cout << data << endl; return data; } else { theVector.push_back(buffer); } } } void socketError(char* str) { MessageBox(NULL, str, "SERVER SOCKET ERROR", MB_OK); };