xqianwang opened a new issue #10757:
URL: https://github.com/apache/pulsar/issues/10757
**Describe the bug**
Using java websocket client for publishing messages to pulsar. At the
beginning it was good. But when producer send queue is full, pulsar websocket
server ProducerHandler throws errors: ` Error occurred while producer handler
was sending msg from /127.0.0.1:37254:
org.apache.pulsar.client.api.PulsarClientException$ProducerQueueIsFullError:
Producer send queue is full`.
On the java websocket client side, it still receive result ok ack from
server:
`{"result":"ok","messageId":"CPEKEINF","context":"1","errorCode":0,"schemaVersion":0}
from server`
**To Reproduce**
Steps to reproduce the behavior:
1. Launch pulsar standalone and java websocket client connecting pulsar
websocket server producer endpoint.
2. keep publishing messages until producer send queue is full. Pulsar
websocket ProducerHandler throws errors.
3. Websocket client still receive result ok message from server
**Expected behavior**
Websocket client sending message should be blocked.
**Screenshots**
If applicable, add screenshots to help explain your problem.
**Desktop (please complete the following information):**
- OS: windows
**Additional context**
Add any other context about the problem here.
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