RAHHH

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

@@ -0,0 +1,28 @@
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+"""
+Loopback helper used in test_ssh and test_recvline
+"""
+
+
+from twisted.protocols import loopback
+
+
+class LoopbackRelay(loopback.LoopbackRelay):
+    clearCall = None
+
+    def logPrefix(self):
+        return f"LoopbackRelay({self.target.__class__.__name__!r})"
+
+    def write(self, data):
+        loopback.LoopbackRelay.write(self, data)
+        if self.clearCall is not None:
+            self.clearCall.cancel()
+
+        from twisted.internet import reactor
+
+        self.clearCall = reactor.callLater(0, self._clearBuffer)
+
+    def _clearBuffer(self):
+        self.clearCall = None
+        loopback.LoopbackRelay.clearBuffer(self)