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path: root/modules/caddyhttp/reverseproxy/caddyfile.go
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2022-03-13chore: Comment fixes (#4634)Francis Lavoie
2022-03-09reverseproxy: copy_response and copy_response_headers for handle_response ↵Francis Lavoie
routes (#4391) * reverseproxy: New `copy_response` handler for `handle_response` routes Followup to #4298 and #4388. This adds a new `copy_response` handler which may only be used in `reverse_proxy`'s `handle_response` routes, which can be used to actually copy the proxy response downstream. Previously, if `handle_response` was used (with routes, not the status code mode), it was impossible to use the upstream's response body at all, because we would always close the body, expecting the routes to write a new body from scratch. To implement this, I had to refactor `h.reverseProxy()` to move all the code that came after the `HandleResponse` loop into a new function. This new function `h.finalizeResponse()` takes care of preparing the response by removing extra headers, dealing with trailers, then copying the headers and body downstream. Since basically what we want `copy_response` to do is invoke `h.finalizeResponse()` at a configurable point in time, we need to pass down the proxy handler, the response, and some other state via a new `req.WithContext(ctx)`. Wrapping a new context is pretty much the only way we have to jump a few layers in the HTTP middleware chain and let a handler pick up this information. Feels a bit dirty, but it works. Also fixed a bug with the `http.reverse_proxy.upstream.duration` placeholder, it always had the same duration as `http.reverse_proxy.upstream.latency`, but the former was meant to be the time taken for the roundtrip _plus_ copying/writing the response. * Delete the "Content-Length" header if we aren't copying Fixes a bug where the Content-Length will mismatch the actual bytes written if we skipped copying the response, so we get a message like this when using curl: ``` curl: (18) transfer closed with 18 bytes remaining to read ``` To replicate: ``` { admin off debug } :8881 { reverse_proxy 127.0.0.1:8882 { @200 status 200 handle_response @200 { header Foo bar } } } :8882 { header Content-Type application/json respond `{"hello": "world"}` 200 } ``` * Implement `copy_response_headers`, with include/exclude list support * Apply suggestions from code review Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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 <lavofr@gmail.com>
2022-03-06reverseproxy: Implement trusted proxies for `X-Forwarded-*` headers (#4507)Francis Lavoie
2022-03-05reverseproxy: Refactor dial address parsing, augment command parsing (#4616)Francis Lavoie
2022-03-01reverseproxy: Move status replacement intercept to `replace_status` (#4300)Francis Lavoie
2021-12-17reverseproxy: Fix incorrect `health_headers` Caddyfile parsing (#4485)Francis Lavoie
Fixes #4481
2021-11-24reverseproxy: Adjust defaults, document defaults (#4436)Francis Lavoie
* reverseproxy: Adjust defaults, document defaults Related to some of the issues in https://github.com/caddyserver/caddy/issues/4245, a complaint about the proxy transport defaults not being properly documented in https://caddy.community/t/default-values-for-directives/14254/6. - Dug into the stdlib to find the actual defaults for some of the timeouts and buffer limits, documenting them in godoc so the JSON docs get them next release. - Moved the keep-alive and dial-timeout defaults from `reverseproxy.go` to `httptransport.go`. It doesn't make sense to set defaults in the proxy, because then any time the transport is configured with non-defaults, the keep-alive and dial-timeout defaults are lost! - Sped up the dial timeout from 10s to 3s, in practice it rarely makes sense to wait a whole 10s for dialing. A shorter timeout helps a lot with the load balancer retries, so using something lower helps with user experience. * reverseproxy: Make keepalive interval configurable via Caddyfile * fastcgi: DialTimeout default for fastcgi transport too
2021-08-17logging: Warn for deprecated single_field encoderMatthew Holt
2021-06-15reverseproxy: Fix overwriting of max_idle_conns_per_host (closes #4201)Matthew Holt
Also split the Caddyfile subdirective keepalive_idle_conns into two properties so the conns and conns_per_host can be set separately. This is technically a breaking change, but probably anyone who this breaks already had a broken config anyway, and silently fixing it won't help them fix their configs.
2021-05-02reverseproxy: Add `handle_response` blocks to `reverse_proxy` (#3710) (#4021)Francis Lavoie
* reverseproxy: Add `handle_response` blocks to `reverse_proxy` (#3710) * reverseproxy: complete handle_response test * reverseproxy: Change handle_response matchers to use named matchers reverseproxy: Add support for changing status code * fastcgi: Remove obsolete TODO We already have d.Err("transport already specified") in the reverse_proxy parsing code which covers this case * reverseproxy: Fix support for "4xx" type status codes * Apply suggestions from code review Co-authored-by: Matt Holt <mholt@users.noreply.github.com> * caddyhttp: Reorganize response matchers * reverseproxy: Reintroduce caddyfile.Unmarshaler * reverseproxy: Add comment mentioning Finalize should be called Co-authored-by: Maxime Soulé <btik-git@scoubidou.com> Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2021-03-29reverseproxy: Implement health_uri, deprecate health_path, supports query ↵Francis Lavoie
(#4050) * reverseproxy: Implement health_uri, replaces health_path, supports query Also fixes a bug with `health_status` Caddyfile parsing , it would always only take the first character of the status code even if it didn't end with "xx". * reverseproxy: Rename to URI, named logger, warn in Provision (for JSON)
2021-03-03reverseproxy: Fix upstreams with placeholders with no port (#4046)Francis Lavoie
2021-02-09reverseproxy: Response buffering & configurable buffer sizeMatthew Holt
Proxy response bodies can now be buffered, and the size of the request body and response body buffer can be limited. Any remaining content that doesn't fit in the buffer will remain on the wire until it can be read; i.e. bodies are not truncated, even if the buffer is not big enough. This fulfills a customer requirement. This was made possible by their sponsorship!
2021-01-05caddyfile: Refactor unmarshaling of module tokensMatthew Holt
Eliminates a fair amount of repeated code
2021-01-04reverseproxy: Caddyfile health check headers, host header support (#3948)yaxin
* reverse_proxy: 1.health check headers can be set through Caddyfile using health_headers directive; 2.health check header host can be set properly * reverse_proxy: replace example with syntax definition inline health_headers directive parse function * bugfix: change caddyfile_adapt testcase file from space to tab * reverseproxy: modify health_header value document as optional and add more test cases
2021-01-04caddyfile: Introduce basic linting and fmt check (#3923)Matt Holt
* caddyfile: Introduce basic linting and fmt check This will help encourage people to keep their Caddyfiles tidy. * Remove unrelated tests I am not sure that testing the output of warnings here is quite the right idea; these tests are just for syntax and parsing success.
2020-11-23reverseproxy: Add Caddyfile scheme shorthand for h2c (#3629)Francis Lavoie
* reverseproxy: Add Caddyfile scheme shorthand for h2c * reverseproxy: Use parentheses for condition Co-authored-by: Matt Holt <mholt@users.noreply.github.com> Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-11-20headers: Support default header values in Caddyfile with '?' (#3807)Gilbert Gilb's
* implement default values for header directive closes #3804 * remove `set_default` header op and rely on "require" handler instead This has the following advantages over the previous attempt: - It does not introduce a new operation for headers, but rather nicely extends over an existing feature in the header handler. - It removes the need to specify the header as "deferred" because it is already implicitely deferred by the use of the require handler. This should be less confusing to the user. * add integration test for header directive in caddyfile * bubble up errors when parsing caddyfile header directive * don't export unnecessarily and don't canonicalize headers unnecessarily * fix response headers not passed in blocks * caddyfile: fix clash when using default header in block Each header is now set in a separate handler so that it doesn't clash with other headers set/added/deleted in the same block. * caddyhttp: New idle_timeout default of 5m * reverseproxy: fix random hangs on http/2 requests with server push (#3875) see https://github.com/golang/go/issues/42534 * Refactor and cleanup with improvements * More specific link Co-authored-by: Matthew Holt <mholt@users.noreply.github.com> Co-authored-by: Денис Телюх <telyukh.denis@gmail.com>
2020-11-02reverseproxy: Wire up some http transport options in Caddyfile (#3843)Francis Lavoie
2020-10-30reverseproxy: Add max_idle_conns_per_host; fix godocs (#3829)Francis Lavoie
2020-10-29reverseproxy: caddyfile: Don't add port if upstream has placeholder (#3819)Jason McCallister
* check if the host is a placeholder * Update modules/caddyhttp/reverseproxy/caddyfile.go Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-10-01reverseproxy: default to port 80 for upstreams in Caddyfile (#3772)Mohammed Al Sahaf
* reverseproxy: default to port 80 for port-less upstream dial addresses * reverseproxy: replace integration test with an adapter test Fixes #3761
2020-09-08reverseproxy: Add `buffer_requests` option to `reverse_proxy` directive (#3710)Francis Lavoie
2020-07-31httpcaddyfile: Add `compression` to http transport config (#3624)Ye Zhihao
* httpcaddyfile: Add `compression` to http transport config * Add caddyfile adapt test for typical h2c setup
2020-07-17reverseproxy: Fix Caddyfile parsing for empty non-http transports (#3576)Francis Lavoie
* reverseproxy: Fix Caddyfile parsing for empty non-http transports * Update modules/caddyhttp/reverseproxy/caddyfile.go Co-authored-by: Matt Holt <mholt@users.noreply.github.com> * Rename empty transport test Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-06-08reverseproxy: Add Caddyfile support for ClientCertificateAutomateMatthew Holt
2020-05-26reverseproxy: Improve error message when using scheme+placeholder (#3393)Francis Lavoie
* reverseproxy: Improve error message when using scheme+placeholder * reverseproxy: Simplify error message Co-authored-by: Matt Holt <mholt@users.noreply.github.com> Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-05-11core: Add support for `d` duration unit (#3323)Francis Lavoie
* caddy: Add support for `d` duration unit * Improvements to ParseDuration; add unit tests Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
2020-05-06reverseproxy: Allow using TLS for port 80 upstreams (see #3361)Matthew Holt
An upstream like https://localhost:80 is still forbidden, but an addr of localhost:80 can be used while explicitly enabling TLS as an override; we just don't allow the implicit behavior to be ambiguous.
2020-05-05reverseproxy: Add tls_server_name option to Caddyfile (#3322)Francis Lavoie
2020-05-05httpserver: Add experimental H2C support (#3289)Matt Holt
* reverse_proxy: Initial attempt at H2C transport/client support (#3218) I have not tested this yet * Experimentally enabling H2C server support (closes #3227) See also #3218 I have not tested this * reverseproxy: Clean up H2C transport a bit * caddyhttp: Update godoc for h2c server; clarify experimental status * caddyhttp: Fix trailers when recording responses (fixes #3236) * caddyhttp: Tweak h2c config settings and docs
2020-04-07reverseproxy: Remove NTLM transport; refactor and improve docsMatthew Holt
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)
2020-02-28reverse_proxy, php_fastcgi: Fix upstream parsing regression (fix #3101)Matthew Holt
2020-02-27reverse_proxy: Allow use of URL to specify schemeMatthew Holt
This makes it more convenient to configure quick proxies that use HTTPS but also introduces a lot of logical complexity. We have to do a lot of verification for consistency and errors. Path and query string is not supported (i.e. no rewriting). Scheme and port can be inferred from each other if HTTP(S)/80/443. If omitted, defaults to HTTP. Any explicit transport config must be consistent with the upstream schemes, and the upstream schemes must all match too. But, this change allows a config that used to require this: reverse_proxy example.com:443 { transport http { tls } } to be reduced to this: reverse_proxy https://example.com which is really nice syntactic sugar (and is reminiscent of Caddy 1).
2020-02-27Revert "reverse_proxy: Add 'transparent' Caddyfile subdirective (closes #2873)"Matthew Holt
This reverts commit 86b785e51cccd5df18611c380962cbd4faf38af5.
2020-02-27reverse_proxy: Add 'transparent' Caddyfile subdirective (closes #2873)Matthew Holt
2020-02-14caddyfile: Refactor; NewFromNextSegment(); fix repeated matchersMatthew Holt
Now multiple instances of the same matcher can be used within a named matcher without overwriting previous ones.
2020-01-22reverseproxy: Accept integer values for flush_interval (fix #2996)Matthew Holt
2020-01-07reverse_proxy: Add tls_trusted_ca_certs to Caddyfile (#2936)Zaq? Wiedmann
Allows specifying ca certs with by filename in `reverse_proxy.transport`. Example ``` reverse_proxy /api api:443 { transport http { tls tls_trusted_ca_certs certs/rootCA.pem } } ```
2019-12-12Minor improvements; comments and shorter placeholders & module IDsMatthew Holt
2019-12-10v2: Module documentation; refactor LoadModule(); new caddy struct tags (#2924)Matt Holt
This commit goes a long way toward making automated documentation of Caddy config and Caddy modules possible. It's a broad, sweeping change, but mostly internal. It allows us to automatically generate docs for all Caddy modules (including future third-party ones) and make them viewable on a web page; it also doubles as godoc comments. As such, this commit makes significant progress in migrating the docs from our temporary wiki page toward our new website which is still under construction. With this change, all host modules will use ctx.LoadModule() and pass in both the struct pointer and the field name as a string. This allows the reflect package to read the struct tag from that field so that it can get the necessary information like the module namespace and the inline key. This has the nice side-effect of unifying the code and documentation. It also simplifies module loading, and handles several variations on field types for raw module fields (i.e. variations on json.RawMessage, such as arrays and maps). I also renamed ModuleInfo.Name -> ModuleInfo.ID, to make it clear that the ID is the "full name" which includes both the module namespace and the name. This clarity is helpful when describing module hierarchy. As of this change, Caddy modules are no longer an experimental design. I think the architecture is good enough to go forward.
2019-11-27reverse_proxy: Add flush_interval to caddyfile syntax (#1460)Matthew Holt
Also add godoc for Caddyfile syntax for file_server
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.
2019-09-20reverse_proxy/headers: Expose header replacement ability in CaddyfileMatthew Holt
Adds header_up and header_down subdirectives to reverse_proxy
2019-09-11reverseproxy: Fix host and port on requests; fix Caddyfile parserMatthew Holt
2019-09-11reverseproxy: Add 'tls' option to enable HTTPS with HTTP transportMatthew Holt
2019-09-10caddyfile: Improve Dispenser.NextBlock() to support nestingMatthew Holt
2019-09-09reverse_proxy: Caddyfile integration (and fix blocks in Dispenser)Matthew Holt