C++ Socket編程 基礎二：多線程Server

#include <WINSOCK2.H>
#include <stdio.h>
#include <iostream>
#include <windows.h>
#include <time.h>
#pragma comment (lib,"ws2_32.lib")
#define SERVERPORT 6000
#define BUFFERLENGTH 256
using namespace ::std;

DWORD WINAPI serverFunction(LPVOID parameter){
	SOCKET acceptSock=(SOCKET)parameter;
	time_t rawtime;
	struct tm* timeinfo;
	time(&rawtime);
	timeinfo=localtime(&rawtime);

	char receiveBuf[100];//接收
	char sendBuf[100];//接收
	;
	sprintf(sendBuf,"hello time :%s",asctime(timeinfo));
	printf("Send:%s\n",sendBuf); 
	send(acceptSock,sendBuf,strlen(sendBuf)+1,0);

	int len=recv(acceptSock,receiveBuf,sizeof(receiveBuf),0);
	printf("recv:%s\n",receiveBuf); 

	return 0;
}
int main (){
	WSADATA WSAdata;
	SOCKET listenSock,acceptSock;
	SOCKADDR_IN addr_in;
	WORD versionRequest;
	versionRequest=MAKEWORD(2,2);
	int err;
	err=WSAStartup(versionRequest,&WSAdata);
	if(err){
		cout<<"Error: WSAStartup()!"<<endl;
	}
	if((listenSock=WSASocket(AF_INET,SOCK_STREAM,IPPROTO_IP,NULL,0,WSA_FLAG_OVERLAPPED))==INVALID_SOCKET)
	{
		printf("error:  WSASocket()! error_number:%d",WSAGetLastError());
		return 1;
	}
	addr_in.sin_family=AF_INET;
	addr_in.sin_port=htons(SERVERPORT);
	addr_in.sin_addr.S_un.S_addr =htonl(INADDR_ANY);
	if(bind(listenSock, (sockaddr*)&addr_in, sizeof(sockaddr)) == SOCKET_ERROR)   
	{   
		printf(" Failed bind() \n");   
		return -1;   
	} 

	listen(listenSock,5);

	SOCKADDR_IN clientsocket;
	int len=sizeof(SOCKADDR);
	while(1) { 

		acceptSock=accept(listenSock,(SOCKADDR*)&clientsocket,&len);
		//如果這裏不是accept而是conection的話。。就會不斷的監聽
		char sendBuf[100]; 
		sprintf(sendBuf,"hello, %s !",inet_ntoa(clientsocket.sin_addr));//找對對應的IP並且將這行字打印到那裏
		CreateThread(NULL,0,serverFunction,(LPVOID)acceptSock,0,NULL);
	}

	WSACleanup();//釋放資源的操作
	return -1;
}