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caddy/modules/caddyhttp/reverseproxy
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tomholford ce2b861cdc reverseproxy: extract shared upstream-selection helpers 
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.
2026-06-23 19:04:24 +09:00
..
fastcgi Merge commit from fork 2026-05-29 11:37:17 -06:00
forwardauth forwardauth: error on duplicate uri subdirective (#7814) 2026-06-10 23:31:04 -04:00
addresses.go core: Implement socket activation listeners (#6573) 2024-09-30 10:55:03 -06:00
addresses_test.go reverseproxy: do not parse upstream address too early if it contains replaceble parts (#5695) 2023-08-05 23:30:02 +02:00
admin.go reverseproxy: Track dynamic upstreams, enable passive healthchecking (#7539) 2026-03-04 15:05:26 -05:00
admin_test.go reverseproxy: Track dynamic upstreams, enable passive healthchecking (#7539) 2026-03-04 15:05:26 -05:00
ascii.go reverseproxy: Sync up handleUpgradeResponse with stdlib (#4664) 2022-04-11 12:49:56 -06:00
ascii_test.go filesystem: Globally declared filesystems, fs directive (#5833) 2024-01-13 20:12:43 +00:00
buffering_test.go reverseproxy: more comments about buffering and add new tests (#6778) 2025-03-07 11:22:43 -07:00
caddyfile.go reverseproxy: add webtransport Caddyfile subdirective 2026-06-23 19:04:24 +09:00
client_disconnect_test.go reverseproxy: log status 499 instead of 0 when client disconnects (#7827) 2026-06-18 13:31:02 +10:00
command.go cmd: prevent commas in header values from being split (#7268) 2025-09-22 21:12:06 -06:00
copyresponse.go reverseproxy: Fix double headers in response handlers (#4847) 2022-06-22 15:10:14 -04:00
dynamic_upstreams_test.go reverseproxy: Track dynamic upstreams, enable passive healthchecking (#7539) 2026-03-04 15:05:26 -05:00
headers_test.go chore: replace interface{} with any for modernization (#7571) 2026-04-11 19:53:12 +03:00
healthchecks.go chore: clean up wording and typo fixes (#7745) 2026-05-20 16:36:30 +10:00
hopheaders_test.go Merge commit from fork 2026-06-12 12:39:01 -06:00
hosts.go admin: Redact sensitive request headers in API logs (#7578) 2026-04-17 14:56:42 -06:00
httptransport.go reverseproxy: wire WebTransport pump into ServeHTTP 2026-06-23 19:04:23 +09:00
httptransport_test.go reverseproxy: Add regression test for DialInfo network override (#7758) 2026-05-20 09:43:58 -04:00
metrics.go reverseproxy: ignore duplicate collector registration error (#6820) 2025-02-04 10:55:30 +03:00
passive_health_test.go reverseproxy: Track dynamic upstreams, enable passive healthchecking (#7539) 2026-03-04 15:05:26 -05:00
retries_test.go reverseproxy: further prevent body closes from dial errors (#7715) 2026-05-12 12:05:50 -06:00
reverseproxy.go reverseproxy: extract shared upstream-selection helpers 2026-06-23 19:04:24 +09:00
selectionpolicies.go reverseproxy: validate on weighted_round_robin loadbalancing policy (#7807) 2026-06-08 02:18:20 +10:00
selectionpolicies_test.go reverseproxy: validate on weighted_round_robin loadbalancing policy (#7807) 2026-06-08 02:18:20 +10:00
streaming.go reverseproxy: make stream copy buffer size configurable (#7627) 2026-04-10 14:49:32 -06:00
streaming_test.go reverseproxy: make stream copy buffer size configurable (#7627) 2026-04-10 14:49:32 -06:00
upstreams.go reverseproxy: Add ability to clear dynamic upstreams cache during retries (#7662) 2026-04-28 09:16:18 -06:00
upstreams_test.go chore: upgrade .golangci.yml and workflow to v2 (#6924) 2025-06-03 02:24:32 +03:00
webtransport_pump.go reverseproxy: add WebTransport session pump 2026-06-23 19:04:23 +09:00
webtransport_pump_test.go reverseproxy: add WebTransport session pump 2026-06-23 19:04:23 +09:00
webtransport_transport.go reverseproxy: extract shared upstream-selection helpers 2026-06-23 19:04:24 +09:00
webtransport_transport_test.go reverseproxy: add WebTransport upstream dialer helper 2026-06-23 19:04:23 +09:00