cookies

cookies provides helpers for mounted reverse proxies that need browser-safe cookie isolation.

Main capabilities

• rewrite Set-Cookie headers for reverse-proxy boundaries
• isolate browser storage by upstream namespace
• preserve unknown Set-Cookie tokens on round trip
• rewrite outbound Cookie headers back to upstream form

Main concepts

Concept	Meaning
ModeOff	Do not rewrite cookies
ModeAuto	Conservative automatic rewriting
ModeIsolate	Namespace browser cookies per upstream target
NamespaceForURL	Stable namespace derived from upstream URL
RewriteSetCookies	Rewrites upstream Set-Cookie values
RewriteOutboundCookies	Filters and unwraps cookies on the way back upstream

Why it is separate

Cookie rewriting is policy-heavy. It should not be hard-coded into a reverse proxy engine.

Keeping it as a focused package lets applications choose:

• whether they need isolation at all
• which namespace strategy to use
• how mounted paths should affect cookie paths