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ce2b861cdc
The WebTransport proxy path in serveWebTransport duplicated the
dynamic-upstream-fallback block and the {http.reverse_proxy.upstream.*}
replacer-variable block from proxyLoopIteration. Francis flagged this
as a maintenance burden in review of #7669.
Extract two helpers:
* resolveUpstreams(r) returns the candidate upstream set — dynamic
when configured (with provisioning + fallback-on-error), static
otherwise. Caller runs the LB selection policy, since the two call
sites diverge on how selection failure is reported (retry loop vs.
fast 502 for long-lived WT sessions).
* setUpstreamReplacerVars(repl, up, di) publishes the seven
placeholders describing the selected upstream.
Both are used by proxyLoopIteration and serveWebTransport with
identical semantics to the inlined code they replace. No behavior
change for either path.
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| .. | ||
| caddyevents | ||
| caddyfs | ||
| caddyhttp | ||
| caddypki | ||
| caddytls | ||
| filestorage | ||
| internal/network | ||
| logging | ||
| metrics | ||
| standard | ||