#include<iostream>

#include<WinSock2.h>

#pragma comment(lib, "ws2_32.lib")

#define CONNECT_NUM_MAX 10

using namespace std;

int main()

{

	//加载套接字库

	WSADATA wsaData;

	int iRet = 0;

	iRet = WSAStartup(MAKEWORD(2, 2), &wsaData);

	if (iRet != 0)

	{

		cout << "WSAStartup(MAKEWORD(2, 2), &wsaData) execute failed!" << endl;;

		return -1;

	}

	if (2 != LOBYTE(wsaData.wVersion) || 2 != HIBYTE(wsaData.wVersion))

	{

		WSACleanup();

		cout << "WSADATA version is not correct!" << endl;

		return -1;

	}

	//创建套接字

	SOCKET serverSocket = socket(AF_INET, SOCK_STREAM, 0);

	if (serverSocket == INVALID_SOCKET)

	{

		cout << "serverSocket = socket(AF_INET, SOCK_STREAM, 0) execute failed!" << endl;

		return -1;

	}

	//初始化服务器地址族变量

	SOCKADDR_IN addrSrv;

	addrSrv.sin_addr.S_un.S_addr = htonl(INADDR_ANY);

	addrSrv.sin_family = AF_INET;

	addrSrv.sin_port = htons(6000);

	//绑定

	iRet = bind(serverSocket, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR));

	if (iRet == SOCKET_ERROR)

	{

		cout << "bind(serverSocket, (SOCKADDR*)&addrSrv, sizeof(SOCKADDR)) execute failed!" << endl;

		return -1;

	}

	//监听

	iRet = listen(serverSocket, CONNECT_NUM_MAX);

	if (iRet == SOCKET_ERROR)

	{

		cout << "listen(serverSocket, 10) execute failed!" << endl;

		return -1;

	}

	//等待连接_接收_发送

	SOCKADDR_IN clientAddr;

	int len = sizeof(SOCKADDR);

	while (1)

	{

		SOCKET connSocket = accept(serverSocket, (SOCKADDR*)&clientAddr, &len);

		if (connSocket == INVALID_SOCKET)

		{

			cout << "accept(serverSocket, (SOCKADDR*)&clientAddr, &len) execute failed!" << endl;

			return -1;

		}

		char sendBuf[100];

		sprintf_s(sendBuf, "Welcome %s", inet_ntoa(clientAddr.sin_addr));

		send(connSocket, sendBuf, strlen(sendBuf)+1, 0);

		char recvBuf[100];

		recv(connSocket, recvBuf, 100, 0);

		printf("%s\n", recvBuf);

		closesocket(connSocket);

	}

	system("pause");

	return 0;

}

#include<iostream>

#include <winsock2.h>

using namespace std;

#pragma comment(lib, "ws2_32.lib")

int main()

{

	//加载套接字库

	WSADATA wsaData;

	int iRet =0;

	iRet = WSAStartup(MAKEWORD(2, 2), &wsaData);

	if (iRet != 0)

	{

		cout << "WSAStartup(MAKEWORD(2, 2), &wsaData) execute failed!" << endl;

		return -1;

	}

	if (2 != LOBYTE(wsaData.wVersion) || 2 != HIBYTE(wsaData.wVersion))

	{

		WSACleanup();

		cout << "WSADATA version is not correct!" << endl;

		return -1;

	}

	//创建套接字

	SOCKET clientSocket = socket(AF_INET, SOCK_STREAM, 0);

	if (clientSocket == INVALID_SOCKET)

	{

		cout << "clientSocket = socket(AF_INET, SOCK_STREAM, 0) execute failed!" << endl;

		return -1;

	}

	//初始化服务器端地址族变量

	SOCKADDR_IN srvAddr;

	srvAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

	srvAddr.sin_family = AF_INET;

	srvAddr.sin_port = htons(6000);

	//连接服务器

	iRet = connect(clientSocket, (SOCKADDR*)&srvAddr, sizeof(SOCKADDR));

	if (0 != iRet)

	{

		cout << "connect(clientSocket, (SOCKADDR*)&srvAddr, sizeof(SOCKADDR)) execute failed!" << endl;

		return -1;

	}

	//接收消息

	char recvBuf[100];

	recv(clientSocket, recvBuf, 100, 0);

	printf("%s\n", recvBuf);

	//发送消息

	char sendBuf[100];

	sprintf_s(sendBuf, "Hello, This is client %s", "兔子");

	send(clientSocket, sendBuf, strlen(sendBuf)+1, 0);

	//清理

	closesocket(clientSocket);

	WSACleanup();

	system("pause");

	return 0;

}