用socket从服务器端向客户端发送数据第二次发送总是错误

[skwayumi]

LRESULT CMainDlg::OnBnClickedButton2(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
int len=sizeof(SOCKADDR);

SOCKET sockConn=accept(ServerSocket,(SOCKADDR*)&m_sockServerAddr,&len);

inet_ntoa(m_sockServerAddr.sin_addr);


if(send(sockConn,"123",sizeof("123")+1,0) == SOCKET_ERROR)//Image\n[111;222;333]\nDone\n
{
MessageBox(_T("发送错误！"));
}
return 0;
}

[Damn_boy]

LRESULT CMainDlg::OnBnClickedButton2(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
  int len=sizeof(SOCKADDR);
  static bool bIsAccepted = false;
  if(!bIsAccepted)
  {
     SOCKET sockConn=accept(ServerSocket,(SOCKADDR*)&m_sockServerAddr,&len);  
     if( sockConn != INVALID_SOCKET )
     {
         bIsAccepted  = true;
         inet_ntoa(m_sockServerAddr.sin_addr);
      }
   }
    
  if(send(sockConn,"123",sizeof("123")+1,0) == SOCKET_ERROR)//Image\n[111;222;333]\nDone\n
  {
  MessageBox(_T("发送错误！"));
  }
  return 0;
}

[skwayumi]

[Quote=引用 1 楼 的回复:]
C/C++ code


LRESULT CMainDlg::OnBnClickedButton2(WORD /*wNotifyCode*/, WORD /*wID*/, HWND /*hWndCtl*/, BOOL& /*bHandled*/)
{
int len=sizeof(SOCKADDR);
static bool bIsAccepted = false;
……
[/Quote]

好像不行，根据你的改了下也有问题sockConn != INVALID_SOCKET 总是1

每点击按钮执行一次操作，就会accept一次，那么已经连接好的，也会accept一次，就会出错，根据这个改好了，不过还是有弊端

[skwayumi]

已经解决了，不过不是这个办法