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.NET: [Durable Agents] Reliable streaming sample by cgillum · Pull Request #2942 · microsoft/agent-framework · GitHub
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.NET: [Durable Agents] Reliable streaming sample - #2942

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Chris Gillum (cgillum) merged 5 commits into
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Dec 20, 2025
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.NET: [Durable Agents] Reliable streaming sample#2942
Chris Gillum (cgillum) merged 5 commits into
microsoft:mainfrom
cgillum:cgillum/durable-agent-streaming

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@cgillum Chris Gillum (cgillum) commented Dec 17, 2025 •
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Motivation and Context

Interactive clients require streaming support, something that durable agents doesn't support out-of-the-box. A sample is needed to demonstrate how this can be achieved, in this case with the help of Redis streaming.

Tracked by #2644

Description

This .NET samples shows how to use Redis streams in an Azure Functions app to implement agent response streaming for durable agents. The sample also provides a step-by-step guide demonstrating how to resume broken streams. This sample is a bit more comprehensive than the other samples.

No product code is changed in this PR, though a new dependency on StackExchange.Redis has been added to central package management.

Contribution Checklist

  • The code builds clean without any errors or warnings
  • The PR follows the Contribution Guidelines
  • All unit tests pass, and I have added new tests where possible
  • Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

@cgillum Chris Gillum (cgillum) added .NET Usage: [Issues, PRs], Target: .Net azure-functions labels Dec 17, 2025
@markwallace-microsoft Mark Wallace (markwallace-microsoft) added the documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs label Dec 17, 2025
@cgillum
Chris Gillum (cgillum) marked this pull request as ready for review December 18, 2025 23:04
Copilot AI review requested due to automatic review settings December 18, 2025 23:04
Copilot AI reviewed Dec 18, 2025
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Pull request overview

This PR introduces a new comprehensive sample (08_ReliableStreaming) demonstrating how to implement reliable streaming for durable agents using Redis Streams. The sample enables clients to disconnect and reconnect to ongoing agent responses without losing messages, inspired by OpenAI's background mode for the Responses API.

Key Changes

  • New sample demonstrating Redis Streams integration for reliable agent response streaming with cursor-based resumption
  • Support for both Server-Sent Events (SSE) and plain text streaming formats based on Accept headers
  • Integration test validation with automated Redis container management in CI/CD pipeline

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 3 comments.

Show a summary per file
File Description
dotnet/samples/AzureFunctions/08_ReliableStreaming/08_ReliableStreaming.csproj Project configuration with StackExchange.Redis dependency
dotnet/samples/AzureFunctions/08_ReliableStreaming/Program.cs Application entry point configuring Redis connection, travel planner agent, and response handler
dotnet/samples/AzureFunctions/08_ReliableStreaming/FunctionTriggers.cs HTTP endpoints for creating and resuming streams with content negotiation support
dotnet/samples/AzureFunctions/08_ReliableStreaming/RedisStreamResponseHandler.cs IAgentResponseHandler implementation publishing responses to Redis Streams with TTL management
dotnet/samples/AzureFunctions/08_ReliableStreaming/Tools.cs Mock travel tools providing weather forecasts and local events for demonstration
dotnet/samples/AzureFunctions/08_ReliableStreaming/README.md Comprehensive documentation with step-by-step instructions for testing stream interruption and resumption
dotnet/samples/AzureFunctions/08_ReliableStreaming/host.json Azure Functions host configuration for durable task extensions
dotnet/samples/AzureFunctions/08_ReliableStreaming/local.settings.json Local development settings including Redis connection configuration
dotnet/samples/AzureFunctions/README.md Updated parent README to reference new sample
dotnet/tests/Microsoft.Agents.AI.Hosting.AzureFunctions.IntegrationTests/SamplesValidation.cs Integration test validating stream creation, interruption, and resumption with Redis container setup
dotnet/agent-framework-dotnet.slnx Solution file updated to include new sample project
dotnet/Directory.Packages.props Added StackExchange.Redis package version for central package management
.github/actions/azure-functions-integration-setup/action.yml CI/CD setup for starting and managing Redis container in integration tests

Comment thread dotnet/samples/AzureFunctions/08_ReliableStreaming/README.md Resolved
Comment thread dotnet/samples/AzureFunctions/08_ReliableStreaming/FunctionTriggers.cs Resolved
Comment thread dotnet/samples/AzureFunctions/08_ReliableStreaming/FunctionTriggers.cs Resolved
@cgillum
Chris Gillum (cgillum) requested a review from a team December 19, 2025 00:53
@cgillum
Chris Gillum (cgillum) added this pull request to the merge queue Dec 19, 2025
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github-merge-queue Bot removed this pull request from the merge queue due to failed status checks Dec 19, 2025
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@moonbox3 Evan Mattson (moonbox3) added hosting Usage: [Issues, PRs], Target: all hosting related solutions and removed azure-functions labels Jun 17, 2026
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This branch was previously deployed

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integration — 37e3b519 Deployed Dec 19, 2025 by cgillum via dotnet-build-and-test (net472, windows-latest, Release, true, integration) #8778
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@vrdmr Varad Meru (vrdmr) vrdmr approved these changes
@gavin-aguiar Gavin Aguiar (gavin-aguiar) gavin-aguiar approved these changes

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@cgillum Chris Gillum (cgillum)

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documentation Usage: [Issues, PRs], Target: documentation in the code base and learn docs hosting Usage: [Issues, PRs], Target: all hosting related solutions .NET Usage: [Issues, PRs], Target: .Net

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@cgillum @vrdmr @gavin-aguiar @moonbox3 @markwallace-microsoft