反向Socket连接

来源：互联网发布：网络教育学费编辑：程序博客网时间：2024/06/03 19:00

mark一下，以后的开发过程中可能会经常用到socket相关的东西，所以mark一下最基础的东西。

//服务端

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

void main()
{
//初始化套接字版本
WSAData wsaData;
WSAStartup(MAKEWORD(2,2),&wsaData);

//创建Socket
SOCKET Socket_Server;
Socket_Server = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (Socket_Server == INVALID_SOCKET)
{
printf("Socket error");
return;
}

//初始化地址
sockaddr_in ClientAddr;
ClientAddr.sin_family = AF_INET;
ClientAddr.sin_port = htons(8000);
ClientAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");

//循环连接
while (true)
{
  //连接
  if (connect(Socket_Server,(LPSOCKADDR)&ClientAddr,sizeof(ClientAddr)) == SOCKET_ERROR)
  {
   printf("connect error/n");
   Sleep(3000);
   continue;
  }
  printf("连接成功");
  break;
}

//发送
if (send(Socket_Server,"上线了",sizeof("上线了"),0) == SOCKET_ERROR)
{
printf("send error");
return;
}

//关闭Socket
closesocket(Socket_Server);
WSACleanup();
}

//-----------------------------------------------------------------------------------------------------------

//客户端

CreateThread(NULL,NULL,(LPTHREAD_START_ROUTINE)StartListen,NULL,NULL,NULL);

DWORD StartListen(LPARAM *lparam)
{
WSAData wsaData;

//初始化套接字版本
WSAStartup(MAKEWORD(2,2),&wsaData);

SOCKET Socket_Client;

//创建套接字
Socket_Client = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (Socket_Client == INVALID_SOCKET)
{
printf("socket error");
return 0;
}

sockaddr_in sockaddr;

//初始化地址信息
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = htons(8000); //8000端口
sockaddr.sin_addr.S_un.S_addr = INADDR_ANY; //表示所有可用的地址

//绑定套接字
if (bind(Socket_Client,(LPSOCKADDR)&sockaddr,sizeof(sockaddr)) == SOCKET_ERROR)
{
  printf("bind error");
  return 0;
}

//监听
if (listen(Socket_Client,5) == SOCKET_ERROR)
{
  printf("listen error");
  return 0;
}

SOCKET Socket_Server; //客户端
sockaddr_in remoteAddr; //服务端地址
int Addrlen = sizeof(remoteAddr);
char revData[255];

while (true)
{
  //接收连接
  Socket_Server = accept(Socket_Client,(LPSOCKADDR)&remoteAddr,&Addrlen);
  if (Socket_Client == INVALID_SOCKET)
  {
   printf("accept error");
   continue;
  }
  OutputDebugString("连接成功");

  //接收数据
  int ret = recv(Socket_Server,revData,sizeof(revData),0);
  if (ret > 0)
  {
   MessageBox(0,revData,0,0);
  }

}

closesocket(Socket_Server);  //关闭socket
WSACleanup();
}