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SergeyMenshykh
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* Add SSE stream reconnection support to A2AAgent Implement automatic reconnection for SSE streams that disconnect mid-task, using the Last-Event-ID header to resume from where the stream left off. Changes: - Add InvokeStreamingWithReconnectAsync method to A2AAgent with configurable max retries and delay between attempts - Add new log messages for reconnection events - Add A2AAgent_StreamReconnection sample demonstrating the feature - Update existing polling sample to use simplified SendMessageAsync API - Add unit tests for stream reconnection logic Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> * address comments * Address PR review feedback - Dispose SSE enumerator before GetTaskAsync fallback to release HTTP connection - Wrap StreamWriter in using blocks with leaveOpen:true and explicit UTF-8 encoding - Print update.Text instead of update object in stream reconnection sample Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Polling for A2A Agent Task Completion
This sample demonstrates how to poll for long-running task completion using continuation tokens with an A2A AI agent, following the background responses pattern.
The sample:
- Connects to an A2A agent server specified in the
A2A_AGENT_HOSTenvironment variable - Sends a request to the agent that may take time to complete
- Polls the agent at regular intervals using continuation tokens until a final response is received
- Displays the final result
This pattern is useful when an AI model cannot complete a complex task in a single response and needs multiple rounds of processing.
Prerequisites
Before you begin, ensure you have the following prerequisites:
- .NET 10.0 SDK or later
- An A2A agent server running and accessible via HTTP
Set the following environment variable:
$env:A2A_AGENT_HOST="http://localhost:5000" # Replace with your A2A agent server host