KeyError occurs when redirect to custom scheme(ex. market://)

[holyachon]

Information

OS platform : mac OS
Python version : 3.7.2
Installed dependencies and versions : httpx==0.9.3
Code snippet

    @property
    def port(self) -> int:
        port = self._uri_reference.port
        if port is None:
            return {"https": 443, "http": 80}[self.scheme]
        return int(port)

Error traceback

[2020-02-24 14:57:08 +0900] [82150] [ERROR] Exception
Traceback (most recent call last):
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/sanic/testing.py", line 120, in _collect_response
    method, url, *request_args, **request_kwargs
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/sanic/testing.py", line 41, in _local_request
    url, verify=False, *args, **kwargs
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 671, in get
    trust_env=trust_env,
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 268, in request
    trust_env=trust_env,
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 410, in send
    allow_redirects=allow_redirects,
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 478, in send_handling_redirects
    request = self.build_redirect_request(request, response)
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 500, in build_redirect_request
    headers = self.redirect_headers(request, url, method)
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/client.py", line 555, in redirect_headers
    if url.origin != request.url.origin:
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/models.py", line 215, in origin
    return Origin(self)
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/models.py", line 287, in __init__
    self.port = url.port
  File "/Users/sym/.pyenv/versions/airbridge-ads-was/lib/python3.7/site-packages/httpx/models.py", line 165, in port
    return {"https": 443, "http": 80}[self.scheme]
KeyError: 'market'
[2020-02-24 14:57:08 +0900] [82150] [INFO] Starting worker [82150]
[2020-02-24 14:57:08 +0900] [82150] [INFO] Stopping worker [82150]
[2020-02-24 14:57:08 +0900] [82150] [INFO] Server Stopped

Description

i'm using sanic and sanic uses httpx to test web request.
when i make a redirect response which goes to "market://details?id=~~" (android market url)", KeyError occurred.
I think it is associated with port property method.
Is this the intended behavior?

Thank you.

[florimondmanca]

Hi @holyachon, I believe this was fixed in a recent release — can’t dig up the issue right now but I remember we now use defaults for the port instead of direct key access.

Can you upgrade to the latest version and confirm this is now resolved?

[holyachon]

hi @florimondmanca , thank you for your quick reply :)
I tested same case with httpx==0.11.1, but same error occurs.

i made a redirect response which goes to "market://test", and error trace is below.

  File "/Users/sym/.pyenv/versions/workbox/lib/python3.7/site-packages/httpx/models.py", line 148, in port
    return {"https": 443, "http": 80}[self.scheme]
KeyError: 'market'

[tomchristie]

Okay, so this ought to error by default since "market" isn't a valid HTTP scheme, but it could do so more gracefully, and we ought to allow it to be supported by explicitly mounting a dispatcher class for market. (Eg. mentioned in passing at #769 (comment))

For example curl will fail with curl: (1) Protocol "market" not supported or disabled in libcurl, and requests will fail with requests.exceptions.InvalidSchema: No connection adapters were found for 'market://details?id=~~'