mattsre opened a new issue, #269:
URL: https://github.com/apache/pulsar-client-python/issues/269
While running Pulsar cluster proxies behind an AWS Load Balancer I ran into
issues with TLS connections to the proxies using example code from this
repository. Running the `examples/consumer.py` code with the client url set to
an LB hostname and `use_tls=True` results in connection failures, whereas
simply specifying `pulsar+ssl://` the consumer works as expected. After
checking docs it seems the `use_tls` argument is deprecated, but I would still
expect the behavior between `use_tls` and `pulsar+ssl://` to be the same. I can
provide details on the load balancer configuration if needed.
Examples with some logs (fake hostname):
```python
client = pulsar.Client("pulsar://pulsar-primary.acme.org:6651", use_tls=True)
```
This client produces connection errors like below:
```
2025-10-10 12:56:28.815 INFO [0x1f7cd60c0] Client:86 | Subscribing on Topic
< redacted_topic >
2025-10-10 12:56:28.815 INFO [0x1f7cd60c0] ClientConnection:193 | [<none>
-> pulsar://pulsar-primary.acme.org:6651] Create ClientConnection, timeout=10000
2025-10-10 12:56:28.815 INFO [0x1f7cd60c0] ConnectionPool:124 | Created
connection for
pulsar://pulsar-primary.acme.org:6651-pulsar://pulsar-primary.acme.org:6651-0
2025-10-10 12:56:28.875 INFO [0x16cf07000] ClientConnection:410 |
[192.168.100.214:65139 -> < redacted_ip >] Connected to broker
2025-10-10 12:56:38.836 ERROR [0x16cf07000] ClientConnection:634 |
[192.168.100.214:65139 -> < redacted_ip >] Connection was not established in
10000 ms, close the socket
2025-10-10 12:56:38.837 INFO [0x16cf07000] ClientConnection:1336 |
[192.168.100.214:65139 -> < redacted_ip >] Connection disconnected (refCnt: 2)
2025-10-10 12:56:38.837 INFO [0x16cf07000] ConnectionPool:141 | Remove
connection for
pulsar://pulsar-primary.acme.org:6651-pulsar://pulsar-primary.acme.org:6651-0
2025-10-10 12:56:38.837 INFO [0x16cf07000] RetryableOperation:114 |
Reschedule get-partition-metadata-persistent:/< redacted_topic > for 100 ms,
remaining time: 29900 ms
2025-10-10 12:56:38.837 INFO [0x16cf07000] ClientConnection:282 |
[192.168.100.214:65139 -> < redacted_ip >] Destroyed connection to
pulsar://pulsar-primary.acme.org:6651-0
```
After switching the client to use `pulsar+ssl://`, the example consumer code
works with no other changes.
```python
client = pulsar.Client("pulsar+ssl://pulsar-primary.acme.org:6651")
```
Is this difference in behavior known and/or expected?
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