RAHHH

backend/lib/python3.12/site-packages/twisted/test/process_twisted.py

@@ -0,0 +1,49 @@
+"""A process that reads from stdin and out using Twisted."""
+
+
+# Twisted Preamble
+# This makes sure that users don't have to set up their environment
+# specially in order to run these programs from bin/.
+import os
+import sys
+
+pos = os.path.abspath(sys.argv[0]).find(os.sep + "Twisted")
+if pos != -1:
+    sys.path.insert(0, os.path.abspath(sys.argv[0])[: pos + 8])
+sys.path.insert(0, os.curdir)
+# end of preamble
+
+
+from zope.interface import implementer
+
+from twisted.internet import interfaces
+from twisted.python import log
+
+log.startLogging(sys.stderr)
+
+
+from twisted.internet import protocol, reactor, stdio
+
+
+@implementer(interfaces.IHalfCloseableProtocol)
+class Echo(protocol.Protocol):
+    def connectionMade(self):
+        print("connection made")
+
+    def dataReceived(self, data):
+        self.transport.write(data)
+
+    def readConnectionLost(self):
+        print("readConnectionLost")
+        self.transport.loseConnection()
+
+    def writeConnectionLost(self):
+        print("writeConnectionLost")
+
+    def connectionLost(self, reason):
+        print("connectionLost", reason)
+        reactor.stop()
+
+
+stdio.StandardIO(Echo())
+reactor.run()  # type: ignore[attr-defined]