Operating guide

Use four controlled tests and a redirect evidence table to distinguish session, region and website-rule problems before changing residential proxies.

Test HTTP/2 GOAWAY handling through a proxy with controlled streams, retry classification, drain timing and production-ready acceptance criteria.

Test whether a proxy preserves HTTP trailer fields across HTTP/1.1, HTTP/2 and HTTP/3 without mistaking a complete body for a complete message.

Measure HTTP request and response header limits through a proxy, classify 400, 431, 502 and disconnects, and set safe production budgets.

Test whether cancelled proxy requests stop upstream work, release tunnels and concurrency, prevent retries, and leave safe operational evidence.

A practical benchmark for choosing per-request rotation or a sticky residential proxy interval using useful-result rate, session integrity, location and cost.

A practical test plan for unary, server-streaming, client-streaming and bidirectional gRPC traffic through HTTP CONNECT proxy routes.

Test Encrypted Client Hello across HTTP CONNECT, HTTPS proxies, browsers and managed inspection paths without confusing GREASE, retry or direct fallback with success.

Build a controlled TLS revocation test for proxy routes that separates proxy and destination certificates, OCSP stapling, responder access and client policy.

Test an authorized HTTP-client-to-browser session handoff with cookie-scope validation, stable proxy routing, browser controls and fail-closed acceptance gates.