[GitHub] [qpid-proton] emanlodovice edited a comment on pull request #243: Support multiple connection URLs in the BlockingConnection class

[GitBox <gi...@apache.org>]

emanlodovice edited a comment on pull request #243:
URL: https://github.com/apache/qpid-proton/pull/243#issuecomment-839388807


   That's for responding @astitcher . I will try to open an issue if this is indeed a problem. It might just be a config issue as I am new to this. Here is my code
   
   ```
   urls = ['activemq1`, `activemq2`]
   conn = BlockingConnection(
       urls=urls, user="admin", password="$pass", sasl_enabled=True, allow_insecure_mechs=True, allowed_mechs="ANONYMOUS", reconnect=Backoff(max_tries=5)
   )
   
   sender = conn.create_sender("test1")
   creation_time = datetime.utcnow().timestamp()
   message = Message(
       body="hello workd",
       creation_time=creation_time,
       expiry_time=creation_time + 200,
       durable=True,
   )
   sender.send(message)
   ```
   
   I am running this code with docker-compose that has 2 activemq services (activemq1 and activemq2). It works fine if the activemq1 service is running. But when I kill activemq1 service to test fail over this code errors with this message:
   
   ```
   Traceback (most recent call last):
     File "/usr/local/lib/python3.8/site-packages/proton/_utils.py", line 373, in __init__
       self.wait(lambda: not (self.conn.state & Endpoint.REMOTE_UNINIT),
     File "/usr/local/lib/python3.8/site-packages/proton/_utils.py", line 501, in wait
       self.container.process()
     File "/usr/local/lib/python3.8/site-packages/proton/_reactor.py", line 242, in process
       event.dispatch(self._global_handler)
     File "/usr/local/lib/python3.8/site-packages/proton/_events.py", line 162, in dispatch
       _dispatch(handler, type.method, self)
     File "/usr/local/lib/python3.8/site-packages/proton/_events.py", line 125, in _dispatch
       handler.on_unhandled(method, *args)
     File "/usr/local/lib/python3.8/site-packages/proton/_reactor.py", line 873, in on_unhandled
       event.dispatch(self.base)
     File "/usr/local/lib/python3.8/site-packages/proton/_events.py", line 162, in dispatch
       _dispatch(handler, type.method, self)
     File "/usr/local/lib/python3.8/site-packages/proton/_events.py", line 123, in _dispatch
       m(*args)
     File "/usr/local/lib/python3.8/site-packages/proton/_handlers.py", line 1337, in on_connection_bound
       addrs = socket.getaddrinfo(host, port, socket.AF_UNSPEC, socket.SOCK_STREAM)
     File "/usr/local/lib/python3.8/socket.py", line 918, in getaddrinfo
       for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
   
   Exception Value: [Errno -3] Temporary failure in name resolution
   ```


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