Stale SSL context API in .github/CONTRIBUTING.md proxy example

[FanWu-ai]

The development proxy example in .github/CONTRIBUTING.md appears to be out of sync with the current API:

• httpx.SSLContext() is not a public HTTPX API.
• httpx.Client(..., ssl_context=ssl_context) uses an unsupported keyword; Client accepts a custom ssl.SSLContext through verify.

The corresponding example in docs/contributing.md already uses ssl.create_default_context(cafile=...) and verify=ctx. A small update to the GitHub contribution guide could use the same approach while keeping its context manager:

import ssl
import httpx

ssl_context = ssl.create_default_context(cafile="/path/to/client.pem")

with httpx.Client(proxy="http://127.0.0.1:8080/", verify=ssl_context) as client:
    response = client.get("https://example.org")
    print(response.status_code)  # should print 200

This report is based on inspecting the documentation and Client constructor source; I have not run the proxy setup or tests.

Would a small documentation-only PR aligning this example with docs/contributing.md be welcome?

[lovelydinosaur]

Would a small documentation-only PR aligning this example with docs/contributing.md be welcome?

Maybe?...

We don't have open access pull requests here, so we need a decent way of connecting with contributors beforehand so we can introduce ourselves, and deal with onboarding.