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master: 91%

Ran 18 Mar 2019 10:44PM UTC

Files 26

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Committed 06 Mar 2019 11:34PM UTC coverage: 91.373% (-0.06%) from 91.434%

Job # 3177.2

Build Type

push

travis-ci

Committed by

kozlovic

Commit Message

Gateways: Fix race for request reply

This addresses the following race:
- client connection creates a subscription on a reply subject
- client connection sends a request
- server sends the subscription to inbound gateway
- server sends the message to outbound gateway (those may be
  different)
- receiving server sends to sub interested in request subject
- app sends reply
- its server then check for interest on the reply's subject

In interestOnly mode, there is a possibility that this server
has not received the interest on the reply subject yet and would
then drop the reply.

This PR detects above scenario and will prefix the reply subject
to identify the origin cluster if it is detected that a matching
subscription was created less than a second ago.
Once the destination has this prefix, the destination cluster
will always send back that message to origin cluster even if
there is no registered interest.

Signed-off-by: Ivan Kozlovic <ivan@synadia.com>

Run Details

13335 of 14594 relevant lines covered (91.37%)

103502.6 hits per line

nats-io / gnatsd / 3177 / 2
90%
master: 91%

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