[Bug]: The A2A client cannot receive streaming events in real time.

[ch1010]

What happened?

The A2A client cannot receive streaming events in real time.
This issue can be observed in the "langgraph" sample.

On the server side, add some logs around the task updates.
In test_client.py, retain only the streaming section, then run both the server and the client.
The issue becomes clearly observable.

All events are received on the client side as a batch after the server has pushed them.
Even use the latest a2a-sdk 0.3.3.
Moreover, Wireshark analysis shows that the task updates are transmitted collectively from the server to the client.

Please refer to this issue also.

Relevant log output

Code of Conduct

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[holtskinner]

@ch1010 Can you provide more information and a minimal code sample to reproduce the behavior?

[ch1010]

@holtskinner
Please refer to the a2aproject "langgraph" sample.
Thank you.
https://github.com/a2aproject/a2a-samples/tree/main/samples/python/agents/langgraph

[pilartomas]

I can no longer reproduce this issue with the latest version of the SDK (0.3.9). Emitted Task and TaskStatusUpdate events are now received in real-time by the client in my setup.

Note that I haven't tested the langgraph sample.

[github-actions]

Marking this issue as stale since it has been open for 14 days with no activity. This issue will be closed if no further activity occurs.