Exceptions from blacksheep/messages.pyx in version 1.2.19

[waweber]

Describe the bug

Upgrading to 1.2.19 from 1.2.18 raises several exceptions like:

File "blacksheep/messages.pyx", line 302, in blacksheep.messages.Request.host.__get__
    host_header = self.get_first_header(b'host')
  File "blacksheep/messages.pyx", line 46, in blacksheep.messages.Message.get_first_header
    cpdef bytes get_first_header(self, bytes key):
  File "blacksheep/messages.pyx", line 46, in blacksheep.messages.Message.get_first_header
    cpdef bytes get_first_header(self, bytes key):
  File "blacksheep/messages.pyx", line 49, in blacksheep.messages.Message.get_first_header
    for header in self.__headers:

TypeError: 'NoneType' object is not iterable

Maybe something went wrong with the Cython compilation?

[RobertoPrevato]

Thank You for reporting this issue. I yanked the 1.2.19 release. The problem happened for this reason:

• v1 branch was still compiling and running tests using Cython-0.29.34 (pinned in requirements.txt)
• the release event is handled by the GitHub Workflow defined on main, the workflow was modified to build the wheels using cython-3.0.2
• a breaking change in the more recent version of Cython broke the package that way

as a side note, this issue was fixed on v2 branch 4 months ago, at d0a9f17

[RobertoPrevato]

I published a fix with 1.2.20.