first comit

venv/lib/python3.10/site-packages/zmq/devices/monitoredqueue.py

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+"""pure Python monitored_queue function
+
+For use when Cython extension is unavailable (PyPy).
+
+Authors
+-------
+* MinRK
+"""
+
+# Copyright (C) PyZMQ Developers
+# Distributed under the terms of the Modified BSD License.
+
+import zmq
+
+
+def _relay(ins, outs, sides, prefix, swap_ids):
+    msg = ins.recv_multipart()
+    if swap_ids:
+        msg[:2] = msg[:2][::-1]
+    outs.send_multipart(msg)
+    sides.send_multipart([prefix] + msg)
+
+
+def monitored_queue(
+    in_socket, out_socket, mon_socket, in_prefix=b'in', out_prefix=b'out'
+):
+    swap_ids = in_socket.type == zmq.ROUTER and out_socket.type == zmq.ROUTER
+
+    poller = zmq.Poller()
+    poller.register(in_socket, zmq.POLLIN)
+    poller.register(out_socket, zmq.POLLIN)
+    while True:
+        events = dict(poller.poll())
+        if in_socket in events:
+            _relay(in_socket, out_socket, mon_socket, in_prefix, swap_ids)
+        if out_socket in events:
+            _relay(out_socket, in_socket, mon_socket, out_prefix, swap_ids)
+
+
+__all__ = ['monitored_queue']