#include <stdio.h>
#include <iostream>
#include <winsock2.h>
using namespace std;
int main(){
WORD version = MAKEWORD(2,2);
WSADATA wsaData;
SOCKET listenSocket;
SOCKET acceptSocket;
SOCKET clientSocket[FD_SETSIZE];
int static index = 0;
DWORD block = 1L;
FD_SET ReadSet;
//加載SOCKET庫
int f = WSAStartup(version,&wsaData);
if (f != 0){
cout<<"加載Winsock 庫錯誤！ 錯誤號："<<WSAGetLastError()<<endl;
return -1;
}
//創建監聽SOCKET
listenSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_IP);
if (listenSocket == INVALID_SOCKET){
WSACleanup();
cout<<"創建監聽SOCKET失敗！ 錯誤號："<<WSAGetLastError()<<endl;
return -1;
}
cout<<"監聽SOCKET創建成功!/n"<<endl;
//構造服務器地址
SOCKADDR_IN serverIp;
serverIp.sin_family = AF_INET;
serverIp.sin_port = htons(8108);
serverIp.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
if (bind(listenSocket,(SOCKADDR*)&serverIp,sizeof(SOCKADDR)) == SOCKET_ERROR){
cout<<"綁定服務器錯誤！ 錯誤號："<<WSAGetLastError()<<endl;
return -1;
}
cout<<"綁定操作成功!/n"<<endl;
if (listen(listenSocket,10) == SOCKET_ERROR){
cout<<"進入監聽模式錯誤！ 錯誤號："<<WSAGetLastError()<<endl;
return -1;
}
cout<<"服務器已進入監聽模式!/n"<<endl;
if (ioctlsocket(listenSocket,FIONBIO,&block) == SOCKET_ERROR){
Cout<<"監聽SOCKET設置爲非阻塞模式錯誤！ 錯誤號："<<WSAGetLastError()<<endl;
return -1;
}
cout<<"監聽SOCKET已設置爲非阻塞模式!/n/n/n"<<endl;
//非阻塞模式接受客戶端連接
while(TRUE){
cout<<"持續按非阻塞模式接受客戶端連接請求!/n/n"<<endl;
//將讀SET 清0
FD_ZERO(&ReadSet);
//將已有客戶端連接放到集合中!
for (int i = 0; i < index; i ){
cout<<"將clientSocket["<<i<<"]放到ReadSet集合中!/n"<<endl;
FD_SET(clientSocket[i],&ReadSet);
}
cout<<"監聽SOCKET 放入 ReadSet集合中!/n/n"<<endl;
FD_SET(listenSocket,&ReadSet);
if (select(0,&ReadSet,NULL,NULL,NULL) == SOCKET_ERROR
cout<<"select 監聽SOCET錯誤! 錯誤號："<<WSAGetLastError()<<endl;
system("pause");
return -1;
}
cout<<"select 返回 說明已有客戶端進行連接或有客戶端數據讀取或有客戶端連接斷開!/n/n/n"<<endl;
if (FD_ISSET(listenSocket,&ReadSet)){
cout<<"當前ReadSet中存監聽SOCKET!/n/n"<<endl;
acceptSocket = accept(listenSocket,NULL,NULL);
if (acceptSocket != INVALID_SOCKET){
cout<<"客戶端建立連接成功並保存到clientSocket["<<index<<"]中!/n/n"<<endl;
clientSocket[index] = acceptSocket;
index++ ;
}else {
cout<<"接收客戶端連接錯誤! 錯誤號："<<WSAGetLastError()<<endl;
continue;
}
}
for (int j = 0; j < index; j ){
if (FD_ISSET(clientSocket[j],&ReadSet)){
cout<<"當前ReadSet集合中有客戶端SOCKET clientSocket["<<j<<"]可讀數據!/n [message]"
char buffer[100]; memset(buffer,0,100);
if (recv(clientSocket[j],buffer,100,0) != SOCKET_ERROR){
cout<<buffer<<"[/messsage]/n"<<endl;
}else {
cout<<"客戶端clientSocket["<<j<<"]出現錯誤! 錯誤號："<<WSAGetLastError()<<endl;
clientSocket[j] = NULL;
index --;
closesocket(clientSocket[j])
break;
}
} }
}
}