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# -*- test-case-name: twisted.test.test_stdio.StandardInputOutputTests.test_producer -*- # Copyright (c) Twisted Matrix Laboratories. # See LICENSE for details. """ Main program for the child process run by L{twisted.test.test_stdio.StandardInputOutputTests.test_producer} to test that process transports implement IProducer properly. """ from __future__ import absolute_import, division import sys from twisted.internet import stdio, protocol from twisted.python import log, reflect class ProducerChild(protocol.Protocol): _paused = False buf = b'' def connectionLost(self, reason): log.msg("*****OVER*****") reactor.callLater(1, reactor.stop) def dataReceived(self, data): self.buf += data if self._paused: log.startLogging(sys.stderr) log.msg("dataReceived while transport paused!") self.transport.loseConnection() else: self.transport.write(data) if self.buf.endswith(b'\n0\n'): self.transport.loseConnection() else: self.pause() def pause(self): self._paused = True self.transport.pauseProducing() reactor.callLater(0.01, self.unpause) def unpause(self): self._paused = False self.transport.resumeProducing() if __name__ == '__main__': reflect.namedAny(sys.argv[1]).install() from twisted.internet import reactor stdio.StandardIO(ProducerChild()) reactor.run()