max_stanza_size doesn't work with websockets

[DoxasticFox]

I'm using the mongooseim/mongooseim:6.1.0-5-gabdcd0b48 docker image. I tried setting:

[[listen.http]]
  ip_address = "0.0.0.0"
  port = 5442
  transport.num_acceptors = 10
  transport.max_connections = 1024

  [[listen.http.handlers.mod_websockets]]
    host = "_"
    path = "/"
    max_stanza_size = 10

The important part is the max_stanza_size setting, which seems to have no effect. I expect it to place a limit on the largest possible message. But I'm still able to send the text of the entire Wikipedia article about Beyoncé, including citations.

[chrzaszcz]

Thanks for reporting this issue. It is caused by a bug in the exml library. We will fix soon.

[chrzaszcz]

Fixed by PR #4197.