enable reuse socket

Author: harkamaljot

tests/unit/test_flow.py

@@ -274,6 +274,7 @@ def port(self):
     @pytest.fixture
     def socket(self, port):
         s = socket.socket()
+        s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) # Enable SO_REUSEADDR
         s.bind(("localhost", port))
         yield s
         s.close()