简单的socket编程入门示例

#include
#include
#include
#pragma comment(lib, “ws2_32.lib”)
using namespace std;
int main()
{
 // 初始化 Winsock.
 WSADATA wsaData;
 int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
 if ( iResult != NO_ERROR )
 {
  cout<<"failed to initialize!"<<endl;
  return 0;
 }

 // 建立socket socket.
 SOCKET client;
 client = soc来源gaodai#ma#com搞@@代~&码网ket( AF_INET, SOCK_STREAM, IPPROTO_TCP );
 if ( client == INVALID_SOCKET )
 {
  cout<<"failed to create client socket!"<<endl;
  WSACleanup();
  return 0;
 }

 // 连接到服务器.
 sockaddr_in clientService;
 clientService.sin_family = AF_INET;
 clientService.sin_addr.s_addr = inet_addr( “127.0.0.1” );
 clientService.sin_port = htons( 13579 );

 if ( connect( client, (SOCKADDR*) &clientService, sizeof(clientService) ) == SOCKET_ERROR)
 {
  cout<<"Failed to connect"<<endl;
  closesocket(client);
  WSACleanup();
  return 0;
 }

 // 发送数据.
 int bytesSent;
 char sendbuf[4096] = “Client: Sending data.”;
 while(TRUE)
 {
  bytesSent = send( client, sendbuf, strlen(sendbuf), 0 );
  gets_s(sendbuf, 4096);
 }

 closesocket(client);
 WSACleanup();
 return 0;
}