apache / apache/pulsar-client-python

`use_tls` and `pulsar+ssl://` client behavior can differ

Aperta
#269 1 commento 0 reazioni 0 assegnatari Vedi su GitHub
Lingua principale
Python
Stelle
75
Fork
53
Metriche di merge delle PR
Nessuna PR unita negli ultimi 30g

Descrizione

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 ](https://pulsar.apache.org/api/python/3.8.x/pulsar.Client.html)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 | [ -> 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?

Guida per i contributori

Apri la guida per i contributori

Valutazione

Questa issue non è ancora stata valutata.

Ricevi le nuove issue nella tua casella

Un breve riepilogo di issue GitHub adatte ai principianti.