HTTP REFERENCE / ORIGIN SERVICE

Origin Reference

A concrete application for observing what reaches an origin after a request crosses proxies, caches, and service boundaries.

APIloading
Browsersame origin
Detecting ingressbypassed
Vercel routing/api/* or /*
Next or Nitropending region

01

Observed request

Public host
pending
Upstream host
pending
Vercel forwarded
not supplied
Protocol
not supplied
Forwarded for
not supplied
Region
local
Ingress
pending
Trace ID
not sampled
Boot ID
pending
Request ID
pending

02

Service boundary

loading

The web service calls Nitro through the private URL injected by the Vercel service binding. Transport is not reachable; readiness also requires the upstream health check to pass.

Checking binding...

03

Paired path comparison

Open Grafana

Runs the same operation directly against Vercel and through Cloudflare. Order is randomized and both requests share one pair ID for log and trace correlation.

No pair measured yet. Start with the bodyless baseline.

04

Persistent records

05

Request composer

Browsers hide redirect and Set-Cookie headers and control CORS preflights. Use pnpm verify:http for those contracts.

06

Response

Choose a reference request or compose one manually.

07

Stream timing

Chunks are emitted 400 ms apart. Similar arrival times indicate that an intermediary buffered the response.

No measurement recorded.