Webrick handler tries to modify frozen strings with the latest webrick gem

[Fjan]

The version of webrick that was released today now has frozen strings (ruby/webrick@9279dd8). This causes an exception when using webrick with rack:

ERROR FrozenError: can't modify frozen String: ""
/ruby-3.1.2/gems/rack-2.2.6.2/lib/rack/handler/webrick.rb:120:in `block in service'

(I think the offending code on that line is res.body << part, it can perhaps simply be replaced by res.body += part but I don't know enough about what's going on there)

[ioquatix]

It's fixed in ruby/webrick#103 and I hope to release it soon.

[ioquatix]

Okay, it was just released in webrick v1.8.1.

[Fjan]

Thanks @ioquatix !