1. TypingIndicator Concurrency & Argument fixes

[cleemullins]

Fixes #186
Problems Fixed:

❌ Used threading.Timer (synchronous) in async code → Event loop blocking
❌ Timer couldn't properly execute async callbacks
❌ No race condition protection for concurrent start() calls
❌ Incorrect time unit handling (Timer uses seconds, code expected milliseconds)
❌ Complex and error-prone callback pattern
Solutions Implemented:

✅ Replaced threading.Timer with asyncio.Task for proper async operation
✅ Created continuous _typing_loop() that runs asynchronously
✅ Added _running flag to prevent race conditions
✅ Proper interval conversion (milliseconds to seconds)
✅ Clean async/await pattern throughout
✅ Graceful cancellation handling with asyncio.CancelledError
✅ Made stop() async to properly await task cancellation
2. AgentApplication Class (agent_application.py)
Problems Fixed:

❌ Called self.typing.stop() without await (sync call to async method)
Solutions Implemented:

✅ Changed to await self.typing.stop() for proper async execution
📋 Key Improvements:
No Thread Blocking: Uses asyncio tasks instead of threads, preventing event loop blocking
Proper Async Patterns: All methods properly use async/await
Race Condition Protection: The _running flag prevents multiple simultaneous starts
Clean Shutdown: Proper task cancellation and cleanup
Better Error Handling: Catches and logs exceptions without crashing
Correct Timing: Proper conversion from milliseconds to seconds for asyncio.sleep()
🎯 Benefits:
Performance: No blocking of the async event loop
Reliability: No deadlocks or race conditions
Maintainability: Cleaner, more Pythonic async code
Scalability: Works correctly with concurrent operations
Safety: Proper resource cleanup and cancellation handling
Both files now follow best practices for async Python code and are free from threading bugs!

[Copilot]

Pull Request Overview

This PR refactors the TypingIndicator class to use proper async/await patterns with asyncio.Task instead of threading.Timer, eliminating event loop blocking and race conditions in async code.

Key Changes:

• Replaced synchronous threading-based timer with asynchronous task-based implementation
• Added race condition protection with _running flag
• Fixed time unit handling and async method calls

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
typing_indicator.py	Converted from threading.Timer to asyncio.Task with continuous typing loop, proper async patterns, and race condition protection
agent_application.py	Updated to await the now-async stop() method

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[rodrigobr-msft]

TypingIndicator needs a broader refactor.

[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}

[Copilot]

Pull Request Overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}