Another non-blocking question

[Michael Farajian]

We are using Win32 non-blocking sockets for our communication.  Everything seems to be working with one exception.   Recursive calls to SSL_read() get the server response, but when to STOP calling it is the question I've seen posted here quite often.  Below is a very simplified version of the logic we are using:   The behavior we are seeing is SSL_read returns -1, WSAWaitForMultipleObjects() _immediately_ returns 0 ( WSA_WAIT_EVENT_0), and a subsequent SSL_read will still return -1. Finally, when all the data is received from the server, the WSAWaitForMultipleEvents() blocks for 30 seconds and times out, forcing our loop to exit.   What are we missing that causes us not to recognize the true ending of the servers response?     Thanks Mike      WSAEventSelect( iSocketID, m_hSocketEvent, FD_READ|FD_WRITE);    //  ...    for(;;)  {   iErr = SSL_read(m_sslconn, szBuffOut, sizeof(szBuffOut));     if( iErr < 0 )   {    int iLastErr = SSL_get_error( m_sslconn, iErr );    if( iLastErr == SSL_ERROR_WANT_READ  || iLastErr == SSL_ERROR_WANT_WRITE )    {     if( WSAGetLastError() == WAEWOULDBLOCK )     {      int iResult = WSAWaitForMultipleEvents( 1, &m_hSocketEvent, FALSE, 30000, FALSE );      if( iResult == WSA_WAIT_EVENT_0 )      {       WSAResetEvent( m_hSocketEvent );       continue;      }      else         break;     }    }   }     // Append szBuffOut to our response string     if ( iErr == 0 )    break;  }