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gh-87497: Document that urllib.request sends headers in camel case (GH-24661)

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Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
(cherry picked from commit 325d6f5035)

Co-authored-by: Alix Lourme <alix.lourme@gmail.com>
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Miss Islington (bot) 2022-04-13 19:45:56 -07:00 • committed by GitHub
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commit 0ab5e83ff7
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1
Doc/library/urllib.request.rst
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@ -213,6 +213,7 @@ The following classes are provided:
(X11; U; Linux i686) Gecko/20071127 Firefox/2.0.0.11"``, while
:mod:`urllib`'s default user agent string is
``"Python-urllib/2.6"`` (on Python 2.6).
All header keys are sent in camel case.
An appropriate ``Content-Type`` header should be included if the *data*
argument is present. If this header has not been provided and *data*

9
Lib/test/test_urllib2_localnet.py
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@ -613,6 +613,15 @@ class TestUrlopen(unittest.TestCase):
pass
self.assertEqual(handler.headers_received["Range"], "bytes=20-39")
def test_sending_headers_camel(self):
handler = self.start_server()
req = urllib.request.Request("http://localhost:%s/" % handler.port,
headers={"X-SoMe-hEader": "foobar"})
with urllib.request.urlopen(req):
pass
self.assertIn("X-Some-Header", handler.headers_received.keys())
self.assertNotIn("X-SoMe-hEader", handler.headers_received.keys())
def test_basic(self):
handler = self.start_server()
with urllib.request.urlopen("http://localhost:%s" % handler.port) as open_url: