Wrong host names displayed in "Outbound API Requests" when requests are sent via a proxy.

[cjsoftuk]

How do you use Sentry?

Self-hosted/on-premise

Version

2.47.0

Steps to Reproduce

1. Configured environment variables http_proxy, https_proxy to send requests out via a proxy server (running tinyproxy).
2. Inspected the "Outbound API Requests" feature in the web interface
3. Observed that requests made via the proxy are logged with the proxy's hostname and port, rather than the eventual destination.

Expected Result

I'd expect to see these showing as calls to https://onlinetools.ups.com/api/track/v1/details/

Actual Result

The calls to /api/track/v1/details/ are actually calls to https://onlinetools.ups.com/api/track/v1/details/, but show up as calls to https://bde-proxy.dchosted.net:8888/api/track/v1/details/ in the web UI

[linear]

PY-2018

[bluemeaford]

Thanks for the clear description — I might be missing something, but I wanted to clarify expected behavior before thinking about fixes.

When requests are sent via a proxy, should the “Outbound API Requests” UI show:

1. Only the final target host (the real destination),
2. Both the proxy host and the target host, or
3. Something else depending on configuration (e.g. specific headers)?

Also:

• What proxy configuration was used (HTTP_PROXY / HTTPS_PROXY env vars vs client-level config)?
• Does the request include the real destination in headers like Host or X-Forwarded-Host?

Clarifying this would help make any fix precise rather than guessy. Thanks!