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Graph/redirect-proxy-transport-mismatch

Pattern

Redirect And Proxy Mismatch

redirect-proxy-transport-mismatch

Client requests fail because transport and routing assumptions drift—TLS mode, secure cookies, localhost scheme, proxies, or browser extensions cause redirects or interception until the stack returns errors (e.g., too many redirects, 502, or blocked scripts).

Node Details

Public graph metadata

Updated7/1/2026

Connections

30 linked nodes

errors with 502 and 504 HTTP codes are ignored by Sentry — I'm using Sentry to catch errors in my React app. Tension: some React errors are ignored too. Outcome: I'd like to override this behavior.

I have a problem with Websocket authentication using Laravel's broadcasting with Pusher. — From time to time it returns 403 when JTW token is refreshed. Tension: How can I log all 4xx and 5xx requests to Sentry?

requests with the forbidden fields sailed through to the write path. Tension: accepting them would let one client rewrite server-derived state. Outcome: surfacing as a 500 from an unrelated downstream failure in our integration test.

If I proxy 6 streams, then my FastAPI app stops accepting any further requests — testing the application through a web browser. Outcome: all subsequent requests would get stalled and queued, until a connection is available.

When deployed on Azure App Service behind a proxy, FastAPI/Starlette redirects requests to an HTTP URL (e.g., HTTP Location header in a 307) instead of preserving HTTPS. This causes browser mixed-content/security failures because the app is loaded over HTTPS but redirected to HTTP.

RedirectResponse goes to "/" without the authentication cookie

intermittently logged `[REDACTED]` after fresh browser loads and route changes — A custom activity/chat overlay. Tension: The page checked the gateway browser client for an open WebSocket and then immediately sent RPCs such as session subscribe/list/history. Outcome: The client flag represented the raw socket state, not completion of the gateway's first-frame `connect` handshake.

stripe login returns unexpected http status code: 403

stripe listen --forward-to localhost:8000/payment/webhook/ still returns 403

Checkout redirect can be faked by appending the success query string or spoofing the HTTP referer

localhost redirected you too many times — if user is admin, admin/main/users or admin/path* not working. Outcome: not-admin redirecting is working.

Recently they changed the security protocol to TLSV1.2 and so I can no longer access it. Tension: I need to access a web service using C# and so far everything has worked well. Outcome: System.Net.WebException: The underlying connection was closed: Unexpected error on a send.

callback request is not secure enough for production

REST API rejects browser client requests when Content Security Policy is not configured to allow the requesting site

All routes except /login redirect back to /login

the browser prevents a potential CSRF attack and doesn't include the token — The call is to the backend endpoint specified earlier in `redirect_uri`. Tension: I need a browser to include the `ASP.NET_SessionId` cookie in the request. Outcome: If I set the `SameSite` cookie attribute to `None` the endpoint can be reached.

The Heroku-hosted MERN app receives many automated-looking requests from the same forwarded IP in the same second, with suspicious query/path content (e.g., unexpected “if”/“php” strings). This behavior appears to be scanning or an attack proxy and raises concerns about security and abuse.

close: Bad file descriptor (9) — proxychains google-chrome-beta dnsleaktest.com. Tension: the core gets dumped due to "Bad file descriptor". Outcome: Trace/breakpoint trap (core dumpe.

502 "Bad Gateway nginx/1.20.1"-Error — Now when I enter http://localhost there is warning if I rly trust the website. I say yes and now I´m on https://localhost. Tension: it usually should open Prefect UI but I have a 502 "Bad Gateway nginx/1.20.1"-Error. Outcome: I would like to run Prefect over https.

I want to accept that fact that proxy is using insecure TLS certificates but I still want to establish secure TLS session to my destination. Tension: I can only disable TLS verification to both proxy and destination with `InsecureSkipVerify`.

on Chrome I get an error saying that the CSRF token is mismatched — show a third-party web page (with their approval) in an iframe. Tension: This site has a different domain to my parent site. Outcome: The site displays fine on firefox.

Accessing https://example.com results in a “too many redirects” loop, while other domain variants redirect correctly for a React app served by Apache with Cloudflare-managed DNS/SSL.

After signing in, middleware redirection occurs, but the browser URL remains unchanged (e.g., it doesn't update to the intended callback/protected route).

After configuring OAuth2 client login, requests to secured endpoints fail and Spring Security redirects to the login page via form login instead of completing OAuth2 authentication.

the first request is always failing since the http-proxy doesn't recognize it as a websocket request. Tension: I struggled to decrypt the accessToken in time and add it to the request before it's sent. Outcome: for now it's not bothering me that much.

I see multiple redirects in the network tab. I have this error: ERR_TOO_MANY_REDIRECTS — I'm working on a REST API using Java 21 with Spring Boot 3.3, and I'm trying to implement authentication through an external site using OpenID.

Requests to the Django/DRF backend fail with “CSRF Failed: Origin checking failed - http://localhost:8000/ does not match any trusted origins.”

Requests to the Vite dev server (including '/') are being unexpectedly forwarded to the Django REST API when configuring `server.proxy`, causing loss of access to Vite-served frontend routes/assets.

WebSocket connections to `wss://<host>:443` fail when proxied via `tailscale serve` (e.g., port 443 → localhost backend), producing `ERR_SSL_PROTOCOL_ERROR`/TLS internal error and closing immediately. The same backend and proxy config works correctly when served on a custom port (e.g., 8443).

Wget before 1.21.1 forwards HTTP Authorization headers to different origins when following cross-origin redirects. — when following cross-origin redirects. Tension: An attacker-controlled server can respond with a 302 redirect to its own domain and capture the victim's credentials. Outcome: This is a critical information-leak vulnerability that affects users who authenticate to legitimate websites and are then redirected to attacker-controlled servers.

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