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Graph/misconfigured-redirect-proxy

AntiPattern

Misconfigured Redirects and Proxies

misconfigured-redirect-proxy

HTTPS/route/proxy settings are inconsistent across the stack—Cloudflare TLS mode, Next.js endpoint routing, and Nginx proxy_pass targets—so browsers receive redirect loops, blocked script loads, or 502s even when services are running.

Node Details

Public graph metadata

Updated7/2/2026

Connections

30 linked nodes

MATCHESSolution

Configure Next.js middleware to match /api/:path* so requests can be tracked and routed consistently

MATCHESSolution

Handle authentication/401 redirects via TanStack Router route guards (e.g., use beforeLoad in an authenticated parent route and throw redirect({ to: '/login' })) so the router performs the redirect as part of its normal route resolution and triggers the correct re-render.

MATCHESSolution

use hash-based routing — react + tanstack router + github pages. Tension: The default "browser" routing will exhibit the behaviour you describe.

MATCHESSolution

Update `next.config.js` to ignore the problematic module/URI by adding a `webpack.IgnorePlugin` for `cloudflare:sockets` (and `pg-native` if needed), wrapped with Payload’s `withPayload`.

MATCHESSolution

Replace `userouter` with Next.js' `useRouter` hook (e.g., `import { useRouter } from 'next/router'; const router = useRouter();`) and ensure routing code is SSR-compatible.

MATCHESSolution

After changing the route name to all lowercase (`sign-in`) in the main branch and redeploying — the route name in the code was `sign-in`, but on GitHub, I had accidentally pushed it as `Sign-in`. Tension: Since Next.js is case-sensitive with routes, this mismatch caused the deployed version on Vercel to fail. Outcome: everything started working fine.

MATCHESSolution

Go to Vercel Dashboard -> Select your project. — Navigate to Settings -> Domains. Tension: Remove redundant redirects from next.config.ts to avoid conflicts. Outcome: Find `fiziokaspars.lv`, click the three dots, and select Redirect to `www.fiziokaspars.lv`.

MATCHESSolution

use https://localhost:5000 and not http://localhost:5000 — sameSite: 'none', secure: true. Outcome: Then you need to use https://localhost:5000 and not http://localhost:5000.

MATCHESSolution

cleared next.config.mjs — Vercel.json was overriding proper build settings. Tension: Also, cleared next.config.mjs as I think some styling issues were occurring with SASS. Outcome: Working perfectly now!

MATCHESSolution

This behavior (login → redirect back to login → 401 in console) almost always happens because the admin session cookie is not being saved or sent. — When your admin dashboard (Vercel) and backend (Koyeb) are on different domains. Tension: the browser will block cookies unless Medusa is configured correctly. Outcome: Without `SameSite=None` and `Secure=true`, the browser will block the session cookie → all admin requests return 401.

MATCHESSolution

Clear the cookies and test it — on another browser. Tension: private routes all redirect to the home page. Outcome: it went trough just fine.

MATCHESSolution

enable "SSL/TLS Strict" Option, instead of just "Full" — Cloudflare's SSL/TLS encryption mode. Tension: I also turned off page redirects in Cloudflare, as I already handle this in Vercel. Outcome: Vercel has documentation on how to integrate with Cloudflare, which was also helpful in resolving this problem.

MATCHESSolution

You can configure Nginx to block any request that has an Invalid HTTP_HOST header — server { listen 80; server_name example.com;. Tension: while filtering out requests with invalid host headers at the proxy server. Outcome: return 444;.

MATCHESSolution

Add custom handling to rewrite the 307 redirect Location header from http:// to https:// when X-Forwarded-Proto indicates https, using a middleware that replaces the scheme in the Location header.

MATCHESSolution

Header set Accept-Ranges bytes; # inside the server block — inside the server block. Tension: proxy_force_ranges on; # inside the location block. Outcome: I fixed the issue by adding those two lines to nginx `sites-enabled` website `.conf` file.

MATCHESSolution

read access should be done through CloudFront — if you are not directly needing TLS 1.0 or 1.1 for your own application needs. Tension: you are not at further risk of attack from outside entities. Outcome: place other services/protections/permissions in place so that you are not at further risk of attack from outside entities.

MATCHESSolution

Ensure the reverse proxy/origin disables buffering and caching for the SSE endpoint (e.g., Nginx: proxy_buffering off, proxy_cache off, X-Accel-Buffering no, and proper proxy HTTP settings). Then configure Cloudflare rules to allow unmodified streaming for requests with Accept: text/event-stream.

MATCHESSolution

you should add something like this to your .conf file: — Are you using nginx? Outcome: proxy_pass http://127.0.0.1:3500; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "upgrade";.

MATCHESSolution

Configure CSP via Next.js middleware (not `vercel.json`) and include the correct nonce-based `script-src` (letting Next.js automatically inject nonces into `_next` script tags). Ensure the root `app/layout.tsx` is set to `dynamic` so a fresh nonce is produced on each request.

MATCHESSolution

No change is required for normal HTTPS behavior; DevTools displaying plaintext is expected and safe as TLS encryption protects data in transit. Ensure the site uses HTTPS to keep network traffic encrypted.

MATCHESSolution

HttpClient.GetAsync(new Uri(TextHelper.RedirectUrlNull(urlContent))); — We have an issue in our solution (we are using .net core). Tension: the SNYK vulnerabilities scaner show us that we have a Server-Side Request Forgery (SSRF) vulnerability.

MATCHESSolution

Your application should listen for HTTP requests only — Heroku's load balancer and routers take care of the HTTPS connection. Tension: Heroku doesn't do this for you. Outcome: Your application just needs to redirect URLs that start with `http://` to `https://`.

MATCHESSolution

Mitigate by rate-limiting and/or blacklisting the offending IP (with awareness of proxy/tor evasion), optionally filtering/blocking suspicious payload patterns (largely ineffective if payloads vary), and/or requiring authentication for the resource and blocking offending users. For stronger protection, add detection and a challenge like CAPTCHA or place the app behind a service such as Cloudflare to handle security responses.

MATCHESSolution

Resolve the conflict by handling redirection consistently in Cloudflare (and/or disabling the Apache redirect for the same purpose), then set Cloudflare SSL/TLS encryption to Full (Strict) so HTTPS upgrades and redirects complete without looping.

MATCHESSolution

Follow the recommended Next.js middleware approach from the referenced Vercel issue—perform the redirect via Next.js middleware (or return a proper redirect response in the supported way) so the URL is actually changed after authentication.

MATCHESSolution

case "CallbackRouteError": return { error: "Invalid credentials!" } — in my `login.ts` server action in the switch case clause. Tension: to return the correct errors. Outcome: bypass this error.

MATCHESSolution

Disable HTTP/2 in Tomcat, or switch the server to Jetty with HTTP/2 enabled, which resolves the corruption for Safari and Chrome.

MATCHESSolution

redirect-uri: "https://localhost:41448/redirect-uri" — Here’s my application.yml configuration:.

MATCHESSolution

Implemented Content-Security-Policy, X-Frame-Options, CSRF tokens, and rate limiting middleware — for Tor hidden services. Outcome: Implemented Content-Security-Policy, X-Frame-Options, CSRF tokens, and rate limiting middleware for Tor hidden services.

MATCHESSolution

Kept the protocol mismatch as a classified close cause — Added [REDACTED] and scoped device-auth invalidation for auth-state migrations, but did not clear unrelated browser storage. Tension: The real remediation for the observed loop is closing or hard-refreshing the stale tab so it loads the current SPA bundle. Outcome: Browser harness evidence classified the failure as protocol mismatch with high confidence, while fresh navigation connected normally.

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