http.server.BaseHTTPRequestHandler.parse_request (TypeError: decoding str is not supported)

[recharti]

BPO	22899
Nosy	@birkenfeld, @serhiy-storchaka

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2015-02-10.08:46:39.119>
created_at = <Date 2014-11-18.23:16:37.882>
labels = ['invalid', 'type-crash']
title = 'http.server.BaseHTTPRequestHandler.parse_request (TypeError: decoding str is not supported)'
updated_at = <Date 2015-02-10.08:46:39.118>
user = 'https://bugs.python.org/recharti'

bugs.python.org fields:

activity = <Date 2015-02-10.08:46:39.118>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2015-02-10.08:46:39.119>
closer = 'serhiy.storchaka'
components = []
creation = <Date 2014-11-18.23:16:37.882>
creator = 'recharti'
dependencies = []
files = []
hgrepos = []
issue_num = 22899
keywords = []
message_count = 3.0
messages = ['231350', '231351', '231359']
nosy_count = 3.0
nosy_names = ['georg.brandl', 'serhiy.storchaka', 'recharti']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'crash'
url = 'https://bugs.python.org/issue22899'
versions = ['Python 3.4']

[recharti]

While the parse_request is handling the requestline, it tries to force the string into iso-8859-1 using an unsupported syntax.

Line #274 in server.py

requestline = str(self.raw_requestline, 'iso-8859-1')

Obviously, python complains.

TypeError: decoding str is not supported

I'm running python 3.4.2 and the line is present in the 3.4.2 source I downloaded from the python.org today.

That is all.

[birkenfeld]

With the vanilla BaseHTTPRequestHandler, this shouldn't happen. self.raw_requestline is read from a socket file, which returns bytes, so they can be decoded using str(bytes, encoding).

Can you please check if there are any third-party packages involved that call/subclass the classes from http.server and introduce a bytes/str confusion? They might not be correctly/completely ported to Python 3 in that case.

In any case, a full traceback will be helpful to help debug this.

[serhiy-storchaka]

self.raw_requestline is read from self.rfile:

    self.raw_requestline = self.rfile.readline(65537)

self.rfile is either socket stream

    self.rfile = self.connection.makefile('rb', self.rbufsize)

or in-memory bytes stream

    self.rfile = BytesIO(self.packet)

In both cases it is binary stream and produces bytes. I don't see a bug in the stdlib, it can be a bug in user code which sets self.rfile or self.raw_requestline to invalid value.