New GitHub issue #96287 from Evernow:<br>
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<pre>
# Bug report
I have been having issues confirming this, but urlretrieve seems to ignore the provided Host header even if it's added. It seems to correctly look at User-agent and Referer. I have two functions doing the same download, one with urlretrieve and one with requests. The requests one works as expected and fails in the same way urlretrieve fails if I remove the Host header.
```
def download_helper(url, fname):
opener = urllib.request.build_opener()
opener.addheaders = [('User-agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0'),
('Referer', "https://www.amd.com/en/support/graphics/amd-radeon-6000-series/amd-radeon-6700-series/amd-radeon-rx-6700-xt"),
('Host' , 'us.download.nvidia.com')]
urllib.request.install_opener(opener)
import ssl
ssl._create_default_https_context = ssl._create_unverified_context
urllib.request.urlretrieve(url, filename=fname)
def download_helper2(url, fname):
my_referer = "https://www.amd.com/en/support/graphics/amd-radeon-6000-series/amd-radeon-6700-series/amd-radeon-rx-6700-xt"
resp = requests.get(url, verify=False, stream=True, headers={
'referer': my_referer,
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:93.0) Gecko/20100101 Firefox/93.0',
'Host' : 'us.download.nvidia.com'
})
total = int(resp.headers.get('content-length', 0))
with open(fname, 'wb') as file:
for data in resp.iter_content(chunk_size=1024):
size = file.write(data)
download_helper2('https://192.229.211.70/Windows/516.94/516.94-desktop-win10-win11-64bit-international-dch-whql.exe', r'516.94-desktop-win10-win11-64bit-international-dch-whql.exe')
```
# Your environment
<!-- Include as many relevant details as possible about the environment you experienced the bug in -->
- CPython versions tested on: 3.10.6
- Operating system and architecture: Windows Server 2022 10.0.20348.887 ; AMD64
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You can freely edit this text. Remove any lines you believe are unnecessary.
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</pre>
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<a href="https://github.com/python/cpython/issues/96287">View on GitHub</a>
<p>Labels: type-bug</p>
<p>Assignee: </p>