Main program for the child process run by twisted.test.test_stdio.StandardInputOutputTests.test_readConnectionLost to test that IHalfCloseableProtocol.readConnectionLost works for process transports.

Class HalfCloseProtocol A protocol to hook up to stdio and observe its transport being half-closed. If all goes as expected, exitCode will be set to 0; otherwise it will be set to 1 to indicate failure.
API Documentation for twisted, generated by pydoctor at 2020-03-25 17:34:30.