//通过套接字获取IP、Port等地址信息  bool GetAddressBySocket(SOCKET m_socket,SOCKADDR_IN &m_address)  {      memset(&m_address, 0, sizeof(m_address));      int nAddrLen = sizeof(m_address);          //根据套接字获取地址信息      if(::getpeername(m_socket, (SOCKADDR*)&m_address, &nAddrLen) != 0)      {          printf("Get IP address by socket failed!n");          return false;      }              //读取IP和Port      cout<<"IP: "<<::inet_ntoa(m_address.sin_addr)<<"  PORT: "<<ntohs(m_address.sin_port)<<endl;      return true;  }