Awaiting a future while the event loop is running would recurse

[Eugen Konkov]

I have Mojolicoius application and action which run next helper:

Chrome.pm.txt

When I update my modules, except WWW/Mechanize/Chrome
Comment out loops as follows:

our @loops = (
    # ['Mojo/IOLoop.pm' => 'Chrome::DevToolsProtocol::Transport::Mojo' ],
    # ['IO/Async.pm'    => 'Chrome::DevToolsProtocol::Transport::NetAsync'],
    # ['AnyEvent.pm'    => 'Chrome::DevToolsProtocol::Transport::AnyEvent'],
    ['AE.pm'          => 'Chrome::DevToolsProtocol::Transport::AnyEvent'],
    # native POE support would be nice

    # The fallback, will always catch due to loading strict (for now)
    ['strict.pm'      => 'Chrome::DevToolsProtocol::Transport::AnyEvent'],
);

All is fine, but when I install 'Future::Mojo' I get the error:

Awaiting a future while the event loop is running would recurse at /home/kes/work/projects/tucha/monkeyman/local/lib/perl5/WWW/Mechanize/Chrome.pm line 703.

I can not understand why WWW::Mechanize::Chrome is using Mojo when loops are commented out (see above)?

 # Mojo/IOLoop.pm' => 'Chrome::DevToolsProtocol::Transport::Mojo

PS. I do not use latest WWW::Mechanize::Chrome because call to:

my $pdf  =  $c->html2pdf( $html );

cause application to fall into infinite loop =(

[Max Maischein]

I've added the "pdf infinite loop" case into the test suite, and that case passes for me.

I cannot reproduce your original case, but there are parts of WWW::Mechanize::Chrome where the API is synchronous. These parts don't work very well together with additional other things like a webserver. If you can reduce your program to something shorter that reproduces the issue, I can investigate this further.

[Eugen Konkov]

The main problem that my app explicitly does not require Mojo::IOLoop. It was installed as third party dependency soft. Also my app does not use Future::Mojo Thus I forced to change directly WWW/Mechanize/Chrome as shown above. This is not good thing, so there should some interface which will allow to select required event loop.

UPD Probably W:M:C should check both: Mojo::IOLoop and Future::Mojo before selecting Chrome::DevToolsProtocol::Transport::Mojo as transport

[Eugen Konkov]

you can reduce your program

I will try, so do not close ticket please

[Eugen Konkov]

I can not reproduce the issue on 0.44 version

thank you very much