Websocket dead letter topic (PIP22)

[cbornet]

Motivation

PIP22 Dead Letter Topic is available in Java client but not in WebSocket proxy.

Modifications

Added two query params maxRedeliverCount and deadLetterTopic to the WebSocket handler to be able to set the ConsumerBuilder's DeadLetterPolicy.

Result

Dead Letter Topic can be used with WebSockets.
Example request:

curl --include \
     --no-buffer \
     --header "Connection: Upgrade" \
     --header "Upgrade: websocket" \
     --header "Host: example.com:80" \
     --header "Origin: http://example.com:80" \
     --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
     --header "Sec-WebSocket-Version: 13" \
"http://localhost:8080/ws/v2/consumer/persistent/public/default/my-topic/my-subscription?subscriptionType=Shared&ackTimeoutMillis=1000&maxRedeliverCount=5&deadLetterTopic=my-DLQ"

[merlimat]

👍