Method: Rex::IO::Stream#has_read_data?

Defined in:
lib/rex/io/stream.rb

#has_read_data?(timeout = nil) ⇒ Boolean

Polls the stream to see if there is any read data available. Returns true if data is available for reading, otherwise false is returned.

Returns:

  • (Boolean) 


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# File 'lib/rex/io/stream.rb', line 87

def has_read_data?(timeout = nil)

  # Allow a timeout of "0" that waits almost indefinitely for input, this
  # mimics the behavior of Rex::ThreadSafe.select() and fixes some corner
  # cases of unintentional no-wait timeouts.
  timeout = 3600 if (timeout and timeout == 0)

  begin
    if ((rv = ::IO.select([ fd ], nil, nil, timeout)) and
        (rv[0]) and
        (rv[0][0] == fd))
      true
    else
      false
    end
  rescue ::Errno::EBADF, ::Errno::ENOTSOCK
    raise ::EOFError
  rescue StreamClosedError, ::IOError, ::EOFError, ::Errno::EPIPE
    #  Return false if the socket is dead
    return false
  end
end