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path: root/modules/caddyhttp/reverseproxy/hosts.go
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2024-07-15reverseproxy: add health_upstream subdirective (#6451)schultzie
* Add health_upstream Signed-off-by: Dylan Schultz <[email protected]> * Add health_upstream to caddyfile parsing * Add Active Upstream case for health checks * Update ignore health port comment Signed-off-by: Dylan Schultz <[email protected]> * Update Upstream json doc Signed-off-by: Dylan Schultz <[email protected]> * Update modules/caddyhttp/reverseproxy/healthchecks.go Co-authored-by: Francis Lavoie <[email protected]> * Use error rather than log for health_port override Signed-off-by: Dylan Schultz <[email protected]> * Add comment about port being ignore if using upstream Signed-off-by: Dylan Schultz <[email protected]> --------- Signed-off-by: Dylan Schultz <[email protected]> Co-authored-by: Francis Lavoie <[email protected]>
2024-03-20reverseproxy: configurable active health_passes and health_fails (#6154)Sam Ottenhoff
* reverseproxy: active health check allows configurable health_passes and health_fails * Need to reset counters after recovery * rename methods to be more clear that these are coming from active health checks * do not export methods
2023-07-08reverseproxy: Pointer receiverMatthew Holt
This avoids copying the Upstream, which has an atomically-accessed value in it.
2023-04-10reverseproxy: Remove deprecated `lookup_srv` (#5396)Francis Lavoie
2023-03-31proxyprotocol: Add PROXY protocol support to `reverse_proxy`, add HTTP ↵Corin Langosch
listener wrapper (#5424) Co-authored-by: WeidiDeng <[email protected]> Co-authored-by: Francis Lavoie <[email protected]>
2022-03-06reverseproxy: Dynamic upstreams (with SRV and A/AAAA support) (#4470)Matt Holt
* reverseproxy: Begin refactor to enable dynamic upstreams Streamed here: https://www.youtube.com/watch?v=hj7yzXb11jU * Implement SRV and A/AAA upstream sources Also get upstreams at every retry loop iteration instead of just once before the loop. See #4442. * Minor tweaks from review * Limit size of upstreams caches * Add doc notes deprecating LookupSRV * Provision dynamic upstreams Still WIP, preparing to preserve health checker functionality * Rejigger health checks Move active health check results into handler-specific Upstreams. Improve documentation regarding health checks and upstreams. * Deprecation notice * Add Caddyfile support, use `caddy.Duration` * Interface guards * Implement custom resolvers, add resolvers to http transport Caddyfile * SRV: fix Caddyfile `name` inline arg, remove proto condition * Use pointer receiver * Add debug logs Co-authored-by: Francis Lavoie <[email protected]>
2020-10-13reverseproxy: Fix dial placeholders, SRV, active health checks (#3780)Matt Holt
* reverseproxy: Fix dial placeholders, SRV, active health checks Supercedes #3776 Partially reverts or updates #3756, #3693, and #3695 * reverseproxy: add integration tests Co-authored-by: Mohammed Al Sahaf <[email protected]>
2020-09-17reverseproxy: Correct alternate port for active health checks (#3693)Mohammed Al Sahaf
* reverseproxy: construct active health-check transport from scratch (Fixes #3691) * reverseproxy: do upstream health-check on the correct alternative port * reverseproxy: add integration test for health-check on alternative port * reverseproxy: put back the custom transport for health-check http client * reverseproxy: cleanup health-check integration test * reverseproxy: fix health-check of unix socket upstreams * reverseproxy: skip unix socket tests on Windows * tabs > spaces Co-authored-by: Francis Lavoie <[email protected]> * make the linter (and @francislavoie) happy Co-authored-by: Francis Lavoie <[email protected]> * One more lint fix Co-authored-by: Francis Lavoie <[email protected]> Co-authored-by: Francis Lavoie <[email protected]>
2020-08-07reverseproxy: Minor fixes and cleanupMatthew Holt
Now use context cancellation to stop active health checker, which is simpler than and just as effective as using a separate stop channel.
2020-04-07core: Rename ParsedAddress -> NetworkAddressMatthew Holt
2020-03-27reverse_proxy: Upstream.String() method returns either LookupSRV or DialMatthew Holt
Either Dial or LookupSRV will be set, but if we rely on Dial always being set, we could run into bugs. Note: Health checks don't support SRV upstreams.
2020-03-24reverse_proxy: Add support for SRV backends (#3180)Matt Holt
* reverse_proxy: Begin SRV lookup support (WIP) * reverse_proxy: Finish adding support for SRV-based backends (#3179)
2020-02-27Fix typos (#3087)Success Go
* Fix typo * Fix typo, thanks for Spell Checker under VS Code
2020-01-09http: Change routes to sequential matcher evaluation (#2967)Matt Holt
Previously, all matchers in a route would be evaluated before any handlers were executed, and a composite route of the matching routes would be created. This made rewrites especially tricky, since the only way to defer later matchers' evaluation was to wrap them in a subroute, or to invoke a "rehandle" which often caused bugs. Instead, this new sequential design evaluates each route's matchers then its handlers in lock-step; matcher-handlers-matcher-handlers... If the first matching route consists of a rewrite, then the second route will be evaluated against the rewritten request, rather than the original one, and so on. This should do away with any need for rehandling. I've also taken this opportunity to avoid adding new values to the request context in the handler chain, as this creates a copy of the Request struct, which may possibly lead to bugs like it has in the past (see PR #1542, PR #1481, and maybe issue #2463). We now add all the expected context values in the top-level handler at the server, then any new values can be added to the variable table via the VarsCtxKey context key, or just the GetVar/SetVar functions. In particular, we are using this facility to convey dial information in the reverse proxy. Had to be careful in one place as the middleware compilation logic has changed, and moved a bit. We no longer compile a middleware chain per- request; instead, we can compile it at provision-time, and defer only the evaluation of matchers to request-time, which should slightly improve performance. Doing this, however, we take advantage of multiple function closures, and we also changed the use of HandlerFunc (function pointer) to Handler (interface)... this led to a situation where, if we aren't careful, allows one request routed a certain way to permanently change the "next" handler for all/most other requests! We avoid this by making a copy of the interface value (which is a lightweight pointer copy) and using exclusively that within our wrapped handlers. This way, the original stack frame is preserved in a "read-only" fashion. The comments in the code describe this phenomenon. This may very well be a breaking change for some configurations, however I do not expect it to impact many people. I will make it clear in the release notes that this change has occurred.
2019-12-29Export Replacer and use concrete type instead of interfaceMatthew Holt
The interface was only making things difficult; a concrete pointer is probably best.
2019-12-23Improve godocs all aroundMatthew Holt
These will be used in the new automated documentation system
2019-11-11core: Use port ranges to avoid OOM with bad inputs (#2859)Mohammed Al Sahaf
* fix OOM issue caught by fuzzing * use ParsedAddress as the struct name for the result of ParseNetworkAddress * simplify code using the ParsedAddress type * minor cleanups
2019-10-11reverse_proxy: Allow dynamic backends (closes #990 and #1539)Matthew Holt
This PR enables the use of placeholders in an upstream's Dial address. A Dial address must represent precisely one socket after replacements. See also #998 and #1639.
2019-09-14reverse_proxy: Ability to mutate headers; set upstream placeholdersMatthew Holt
2019-09-09Migrate some selection policy tests over to v2Matthew Holt
2019-09-05Reconcile upstream dial addresses and request host/URL informationMatthew Holt
My goodness that was complicated Blessed be request.Context Sort of
2019-09-03Integrate circuit breaker modules with reverse proxyMatthew Holt
2019-09-03Some cleanup and godocMatthew Holt
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