[Problem/Bug]: POSTing large files, when inetercepting resource request crashes WebView

[swilhelmi]

What happened?

Steps to reproduce

1. Attach event handler to CoreWebView2.WebResourceRequested

In Browser:

1. Select file (>1.5GB, did so far not figure out the actual limit 100MB work fine) for upload
2. POST file as FormData

Expected Result

Event handler receives the large payload

Actual result

WebView crashes.

Crash Produces a Windows event log entry containing:

[24884:17392:0722/143309.519:INFO:chrome\browser\extensions\extension_garbage_collector.cc:188] Garbage collection for extensions on file thread is complete.

Importance

Important. My app's user experience is significantly compromised.

Runtime Channel

Stable release (WebView2 Runtime)

Runtime Version

1.0.3800.47

SDK Version

No response

Framework

WPF

Operating System

Windows 11

OS Version

No response

Repro steps

Steps to reproduce

1. Attach event handler to CoreWebView2.WebResourceRequested

In Browser:

1. Select file (>1.5GB, did so far not figure out the actual limit 100MB work fine) for upload
2. POST file as FormData

Expected Result

Event handler receives the large payload

Actual result

WebView crashes.

Crash Produces a Windows event log entry containing:

[24884:17392:0722/143309.519:INFO:chrome\browser\extensions\extension_garbage_collector.cc:188] Garbage collection for extensions on file thread is complete.

Repros in Edge Browser

No, issue does not reproduce in the corresponding Edge version

Regression

No, this never worked

Last working version (if regression)

No response

[github-actions]

Hi, @swilhelmi!

It seems that your issue contains the word "crash". If you have not already, could you attach a crash dump as a comment?

WV2 crash dumps are located in a subfolder of the app's user data folder (UDF): <UDF>\EBWebView\Crashpad\reports\. By default, the user data folder is created in the app's folder with a name like <App Exe Name>.exe.WebView2. Refer to Crash Diagnostics for more information.

Thank you for your cooperation!

[swilhelmi]

Hi, @swilhelmi!

It seems that your issue contains the word "crash". If you have not already, could you attach a crash dump as a comment?

WV2 crash dumps are located in a subfolder of the app's user data folder (UDF): <UDF>\EBWebView\Crashpad\reports\. By default, the user data folder is created in the app's folder with a name like <App Exe Name>.exe.WebView2. Refer to Crash Diagnostics for more information.

Thank you for your cooperation!

No crash dump was created.
Temp folder contains single file edge_shutdown_crash.txt Containing [sic!]:

1