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March 03


Akka HTTP 10.2.9 Released

Dear hakkers,

We are happy to announce the 10.2.9 release of Akka HTTP. This release is a bugfix release fixing a few regressions introduced with 10.2.8:

  • Avoid memory leak when HTTP/2 is enabled (#4047)
  • Revert the default behavior for ServerSentEvent parsing back to the 10.2.7 default. Empty events are now silently skipped again to keep compatibility with existing (akka-http) servers. If you want to interpret empty events, you can now turn on akka.http.sse.emit-empty-events (#4043)
  • Restore compatibility with existing Lightbend Telemetry versions #4055

Changes since 10.2.8


  • Hide empty SSE events behind flag #4043
  • Unregister connection from MasterTermination when done #4047
  • Revert part of “core: cleanup some unused vals (#4033)” #4055
  • Silence noisy error when HTTP/2 connection is closed with idle-timeout #4044

The complete list of closed issues can be found on the 10.2.9 milestone on GitHub.

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Happy hakking!

– The Akka Team