ImageCaptcha doesn't set content length in SpamFilter plugin

[kmilner@…]

I am using Trac-0.13dev_r9995 with TracSpamFilter-0.3.3dev_r9994. When enabling ImageCaptcha, I get the following error on challenge pages:

Trac detected an internal error: RuntimeError: No Content-Length header set

Here is the stack trace:

2010-08-12 12:45:54,432 Trac[main] ERROR: Internal Server Error: 
Traceback (most recent call last):
  File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 513, in _dispatch_request
    dispatcher.dispatch(req)
  File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 235, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.5/site-packages/TracSpamFilter-0.3.3dev_r9994-py2.5.egg/tracspamfilter/captcha/image.py", line 72, in process_request
    req.write(image.getvalue())
  File "build/bdist.linux-x86_64/egg/trac/web/api.py", line 528, in write
    raise RuntimeError("No Content-Length header set")
RuntimeError: No Content-Length header set

I believe that a change needs to be made here to add the content length field: plugins/0.12/spam-filter-captcha/tracspamfilter/captcha/image.py@9994#L62​

I'll have to revert to expression captcha in the meantime.

Thanks!

[Dirk Stöcker]

In r10070.