server_part1.cpp

使用socket实现客户端与服务器的通信（仅含源文件）

#include <stdio.h>
#include <winsock.h>
#include <windows.h>

#define SERVER_SOCKET_ERROR 1
#define SOCKET_OK 0

#pragma comment(lib, "wsock32.lib")

void socketError(char*);

int WINAPI WinMain(	HINSTANCE hInst, HINSTANCE hPrevInstance, 
					LPSTR lpCmdLine, int nShow)
{
	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;

	client = accept(s, NULL, NULL);

	if(client == INVALID_SOCKET)
	{
		socketError("Failed accept()");
		WSACleanup();
		return SERVER_SOCKET_ERROR;
	}

	//close process
	closesocket(client);
	closesocket(s);

	WSACleanup();

	return SOCKET_OK;
};

void socketError(char* str)
{
	MessageBox(NULL, str, "SOCKET ERROR", MB_OK);
};