Hi Graham,
When the IUS RPM upgrade hit our server Saturday, we started getting 500
Internal Server Errors. The upgrade was from
python33-mod_wsgi-3.4-2.ius.el6.x86_64
to
python33-mod_wsgi-4.1.3-1.ius.el6.x86_64
The error was:
mod_wsgi (pid=1427): Exception occurred processing WSGI script
/home/deploy/WhiteBoot4/DevLevel.1/TMTManage/Web/Dashboard/User/index.wsgi'.
TypeError: sequence of byte string values expected, value of type str found
--
I investigated and found some 4-5 year old code that did this (preparing
for the wsgi response):
self.Header['Content-Type'] = 'text/html'
self.Status = 302
self.Iterator = ("",)
self.Length = 0
This was changed to:
...
self.Iterator = (b'',)
Which of course fixed the problem. In more recent application code, there
was no problem because all responses were in bytes regardless of the
response status.
--
I'm not sure why we were returning an empty string on a 302 redirect, but I
thought it might be worth mentioning that something recently changed in
mod_wsgi which will cause a failure on this non-standard behavior.
If this change was not intentional, I thought you might want to know Graham.
Thanks!
Jason Garber
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