socket编程基于IO复用的多客户端服务器

很久没更新了，今天写了一个windows下的 socket编程基于IO复用的多客户端服务器 ， 重点在于select 函数，自行百度就可以了。

Talk is cheap , show me the code.

server.c

#include
#include
#include
#define BUFSIZ 10
#pragma comment(lib,"ws2_32.lib")
void ErrorHandling(char * msg){
	puts(msg);
	system("pause");
	exit(1);
}
int main(){
	WSADATA wsd;
	SOCKET hServSock, hClntSock;
	SOCKADDR_IN servAdr, clntAdr;
	TIMEVAL timeout;
	fd_set reads, cpyReads;

	int adrSz;
	int strLen, fdNum;
	unsigned int i;
	char buf[BUFSIZ];

	//初始化socket库
	if (WSAStartup(MAKEWORD(2, 2), &wsd) != 0){
		ErrorHandling("WSAStartup error!");
	}
	hServSock = socket(PF_INET,SOCK_STREAM,0);
	memset(&servAdr, 0, sizeof(servAdr));
	servAdr.sin_family = AF_INET;
	servAdr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
	servAdr.sin_port = htons(6000);

	if (bind(hServSock,(SOCKADDR *)&servAdr,sizeof(SOCKADDR))==SOCKET_ERROR){
		ErrorHandling("bind() error");
	}
	if (listen(hServSock,5)==SOCKET_ERROR){
		ErrorHandling("listen() error");
	}
	hClntSock = socket(PF_INET, SOCK_STREAM, 0);
	FD_ZERO(&reads);
	FD_SET(hServSock, &reads);
	/*
	FD_SET(hClntSock, &reads);
	printf("%d",reads.fd_count);
	for (i = 0; i < reads.fd_count;i++){
		printf("%d",reads.fd_array[i]);
	}
	*/

	while (1){
		cpyReads = reads;
		timeout.tv_sec = 5;
		timeout.tv_usec = 0;
		fdNum = select(0, &cpyReads, 0, 0, &timeout);
		if (fdNum==SOCKET_ERROR){
			break;
		}
		if (fdNum==0){
			continue;
		}
		for (i = 0; i

client.c  (这里的客户端和之前的一样，没有改变)

#include
#include
#include

#pragma comment(lib,"ws2_32.lib")
void ErrorHandling(char * msg){
	puts(msg);
	system("pause");
	exit(1);
}

int main(){
	WSADATA wsd;
	SOCKET  sClient;
	SOCKADDR_IN addrClient;
	int sizeAddrClient = 0;
	int recvCount = 100;
	char charBuf[1024] = {0};
	//初始化socket库
	if (WSAStartup(MAKEWORD(2, 2), &wsd)!=0){
		ErrorHandling("WSAStartup error!");
	}
	puts("初始化socket库");

	//创建客户端socket
	sClient = socket(AF_INET, SOCK_STREAM, 0);
	if (sClient==INVALID_SOCKET){
		ErrorHandling("socket() error!");
	}
	puts("创建客户端socket");

	//初始化网络地址信息
	memset(&addrClient, 0, sizeof(addrClient));
	addrClient.sin_family = AF_INET;
	addrClient.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
	addrClient.sin_port = htons(6000);
	puts("初始化网络地址信息");

	//连接服务端
	if (connect(sClient,(SOCKADDR*)&addrClient,sizeof(addrClient))==SOCKET_ERROR){
		ErrorHandling("connect error!");
	}
	puts("现在可以向服务端发送消息");
	//循环发送消息(我规定最多为200次)
	while (recvCount>0){
		memset(charBuf, 0, 1024);
		printf("To:");
		gets(charBuf);
		send(sClient, charBuf, strlen(charBuf), 0);
		memset(charBuf, 0, 1024);
		recvCount--;
	}
	//关闭socket
	closesocket(sClient);
	WSACleanup();
	puts("关闭socket");
	system("pause");
	return 0;
}

不明白的地方请留言