netsocket with select module [first]

最新推荐文章于 2024-11-19 16:42:38 发布

转载最新推荐文章于 2024-11-19 16:42:38 发布 · 638 阅读

文章标签：

#module #server #socket #winapi #null #stream

语言基础专栏收录该内容

58 篇文章

订阅专栏

本文介绍了一个基于Windows平台使用Select模型实现的简易服务器代码示例。该服务器能够监听特定端口，接受客户端连接，并通过多线程处理客户端请求。文章展示了如何初始化Winsock、创建套接字、设置地址结构、绑定端口、监听连接以及如何使用Select来等待读就绪状态。此外，还介绍了如何创建线程来处理每个客户端连接，包括接收数据、打印信息和回传数据。

netsocket with select module [first]

//不完善的select模型雏形

#include <windows.h>
#include <stdio.h>
#define PORT 9318
#pragma comment(lib,"ws2_32")
//服务器
FD_SET WriteSet;
FD_SET ReadSet;

DWORD WINAPI work(void * data)
{
SOCKET client=(SOCKET)data;
while(1){
  char recvBuf[100];
  recv(client,recvBuf,100,0);
  if   (GetLastError()   !=   WSAEWOULDBLOCK)
  {
   printf("conn err   %d/n",WSAGetLastError());
   closesocket(client);
   printf("Closing   socket   number   %d/n",   client);
   break;
  }
  printf("%s/n",recvBuf);
  send(client,recvBuf,strlen(recvBuf)+1,0);
}
closesocket(client);
return 0;
}

int main(){
//加载并初始化winsock ddl

WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2,2);
::WSAStartup(wVersionRequested,&wsaData);
SOCKET server=socket(AF_INET,SOCK_STREAM,0);

SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("0.0.0.0");;
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(PORT);

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

listen(server,5);

SOCKADDR_IN addrClient;
int len=sizeof(SOCKADDR_IN);
for(;;)
{
  FD_ZERO(&ReadSet);
  FD_SET(server, &ReadSet); //定位连接
  SOCKET client = select(server+1,&ReadSet,NULL,NULL,NULL);
  client=accept(server,(SOCKADDR*)&addrClient,&len);
  printf("%s/n",inet_ntoa(addrClient.sin_addr));
  FD_ZERO(&WriteSet);    //为0
  FD_SET(server, &WriteSet); //定位接收
  HANDLE t=CreateThread(0,0,work,(void*)client,0,0);
}
closesocket(server);
::WSACleanup();
return 0;
}