Socket 多线程

服务端

#include <stdio.h>
#include <Winsock2.h>
#pragma comment (lib, "ws2_32")
#include <thread>

void sendFuction(SOCKET &sockConn)
{
	while (true)
	{
		char buffer[100];
		char mymsg[100];
		gets(mymsg);
		sprintf_s(buffer,100,"server say:\n%s",mymsg);
		send(sockConn, buffer, strlen(buffer)+sizeof(char), NULL);
	}
	
}
void recvFunction(SOCKET& sockClient)
{
	while (true)
	{
		char recvBuf[50];
		recv(sockClient,recvBuf,50,0);
		printf("%s\n",recvBuf);
	}

}

void main()
{
	//1：加载套接字库，创建套接字(WSAStartup()/socket())；
	WORD wVersionRequested;
	WSADATA wsaData;
	int err;

	wVersionRequested = MAKEWORD( 1, 1 );

	err = WSAStartup( wVersionRequested, &wsaData );
	if ( err != 0 ) {
		return;
	}

	if ( LOBYTE( wsaData.wVersion ) != 1 ||
		HIBYTE( wsaData.wVersion ) != 1 ) {
			WSACleanup( );
			return;
	}
	SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,0);

	//2：绑定套接字到一个IP地址和一个端口上(bind())；
	SOCKADDR_IN addrSrv;
	addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
	addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(6000);

	bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

	//3：将套接字设置为监听模式等待连接请求(listen())；
	listen(sockSrv,5);

	//4：请求到来后，接受连接请求，返回一个新的对应于此次连接的套接字(accept())；
	SOCKADDR_IN addrClient;
	int len=sizeof(SOCKADDR);
	while(1)
	{
		SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);
		char sendBuf[50];
		sprintf(sendBuf,"Welcome %s to here!",inet_ntoa(addrClient.sin_addr));
		//5：用返回的套接字和客户端进行通信(send()/recv())
		send(sockConn,sendBuf,strlen(sendBuf)+1,0);
		char recvBuf[50];
		recv(sockConn,recvBuf,50,0);
		printf("%s\n",recvBuf);

		//多线程
		std::thread sendThread(sendFuction,sockConn);
		sendThread.detach();

		std::thread recvThread(recvFunction,sockConn);
		recvThread.detach();
		

		//6：返回，等待另一连接请求；
		//7：关闭套接字，关闭加载的套接字库(closesocket()/WSACleanup())。
		//closesocket(sockConn);
	}

}

客户端

#include <stdio.h>
#include <Winsock2.h>
#pragma comment (lib, "ws2_32") 
#include <thread>
void sendFuction(SOCKET &sockConn)
{
	while (true)
	{
		char buffer[100];
		char mymsg[100];
		gets(mymsg);
		sprintf_s(buffer,100,"clien say:\n%s",mymsg);
		send(sockConn, buffer, strlen(buffer)+sizeof(char), NULL);
	}

}
void recvFunction(SOCKET& sockClient)
{
	while (true)
	{
		char recvBuf[50];
		recv(sockClient,recvBuf,50,0);
		printf("%s\n",recvBuf);
	}
	
}
void main()
{
	//1：加载套接字库，创建套接字(WSAStartup()/socket())；
	WORD wVersionRequested;
	WSADATA wsaData;
	int err;

	wVersionRequested = MAKEWORD( 1, 1 );

	err = WSAStartup( wVersionRequested, &wsaData );
	if ( err != 0 ) {
		return;
	}

	if ( LOBYTE( wsaData.wVersion ) != 1 ||
		HIBYTE( wsaData.wVersion ) != 1 ) {
			WSACleanup( );
			return;
	}
	SOCKET sockClient=socket(AF_INET,SOCK_STREAM,0);

	//2：向服务器发出连接请求(connect())；
	SOCKADDR_IN addrSrv;
	addrSrv.sin_addr.S_un.S_addr=inet_addr("127.0.0.1");
	addrSrv.sin_family=AF_INET;
	addrSrv.sin_port=htons(6000);
	connect(sockClient,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

	//3：和服务器端进行通信(send()/recv())；
	send(sockClient,"hello",strlen("hello")+1,0);
	char recvBuf[50];
	recv(sockClient,recvBuf,50,0);
	printf("%s\n",recvBuf);


 	std::thread sendThread(sendFuction,sockClient);
 	sendThread.detach();

	std::thread recvThread(recvFunction,sockClient);
	recvThread.detach();

	//4：关闭套接字，关闭加载的套接字库(closesocket()/WSACleanup())。
	//closesocket(sockClient);
	//WSACleanup();
	while (true)
	{

	}
}