Request cancellation flow error

[Clasherzz]

Describe the bug/problem

The request shows request cancelled as response even when its not cancelled in that session .

Steps to Reproduce the bug/problem

Make an endpoint with delayed response. Make a request to it and cancel it . Now make the request to same endpoint once again and close the server before a response is send . You can see that instead of showing error it shows request cancelled.

Expected behavior

Should show the error

Device Info (The device where you encountered this issue)

• OS: Windows
• Version:, Windows 11

Flutter Doctor

Doctor summary (to see all details, run flutter doctor -v):
[√] Flutter (Channel main, 3.27.0-1.0.pre.438, on Microsoft Windows [Version 10.0.22631.4751], locale en-IN)
[√] Windows Version (Windows 11 or higher, 23H2, 2009)
[√] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
[√] Chrome - develop for the web
[√] Visual Studio - develop Windows apps (Visual Studio Build Tools 2019 16.11.34)
[√] Android Studio (version 2021.3)
[√] VS Code (version 1.97.2)
[√] Connected device (3 available)
[√] Network resources

[Clasherzz]

@ashitaprasad this is because after cancelling and using the same request Id to make the next request causes the client manager to think it has already been cancelled. We need to remove it. Currently manager uses a queue to store cancelled request which doesn't have method to remove using the value. So this means using a set. Solving this would also be a step to resolve multipart cancellation error #607