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* reverseproxy: Fix panic when TLS is not configured
* Refactor and simplify setScheme
Co-authored-by: Matthew Holt <mholt@users.noreply.github.com>
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* Make reverse proxy TLS server name replaceable for SNI upstreams.
* Reverted previous TLS server name replacement, and implemented thread safe version.
* Move TLS servername replacement into it's own function
* Moved SNI servername replacement into httptransport.
* Solve issue when dynamic upstreams use wrong protocol upstream.
* Revert previous commit.
Old commit was: Solve issue when dynamic upstreams use wrong protocol upstream.
Id: 3c9806ccb63e66bdcac8e1ed4520c9d135cb011d
* Added SkipTLSPorts option to http transport.
* Fix typo in test config file.
* Rename config option as suggested by Matt
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* Update code to match renamed config option.
* Fix typo in config option name.
* Fix another typo that I missed.
* Tests not completing because of apparent wrong ordering of options.
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* Make reverse proxy TLS server name replaceable for SNI upstreams.
* Reverted previous TLS server name replacement, and implemented thread safe version.
* Move TLS servername replacement into it's own function
* Moved SNI servername replacement into httptransport.
* Solve issue when dynamic upstreams use wrong protocol upstream.
* Revert previous commit.
Old commit was: Solve issue when dynamic upstreams use wrong protocol upstream.
Id: 3c9806ccb63e66bdcac8e1ed4520c9d135cb011d
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* Add renegotiation option in reverseproxy tls client
* Update modules/caddyhttp/reverseproxy/httptransport.go
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* reverseproxy: Correct the `tls_server_name` docs
* Update modules/caddyhttp/reverseproxy/httptransport.go
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* 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>
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* 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
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The fastcgi changes came from v1 which don't make sense in v2.
Fix comment about default value in reverse proxy keep alive.
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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.
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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!
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* ci: Use golangci's github action for linting
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix most of the staticcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the prealloc lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the misspell lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the varcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the errcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the bodyclose lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the deadcode lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the unused lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the gosec lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the gosimple lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the ineffassign lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Fix the staticcheck lint errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Revert the misspell change, use a neutral English
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Remove broken golangci-lint CI job
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Re-add errantly-removed weakrand initialization
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* don't break the loop and return
* Removing extra handling for null rootKey
* unignore RegisterModule/RegisterAdapter
Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
* single-line log message
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* Fix lint after a1808b0dbf209c615e438a496d257ce5e3acdce2 was merged
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Revert ticker change, ignore it instead
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Ignore some of the write errors
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Remove blank line
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Use lifetime
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* close immediately
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* Preallocate configVals
Signed-off-by: Dave Henderson <dhenderson@gmail.com>
* Update modules/caddytls/distributedstek/distributedstek.go
Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com>
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* 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 <msaa1990@gmail.com>
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* 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 <lavofr@gmail.com>
* make the linter (and @francislavoie) happy
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
* One more lint fix
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
Co-authored-by: Francis Lavoie <lavofr@gmail.com>
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* reverse proxy: add support for custom resolver
* reverse proxy: don't pollute the global resolver with bootstrap resolver setup
* Improve documentation of reverseproxy.UpstreamResolver fields
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
* reverse proxy: clarify the name resolution conventions of upstream resolvers and bootstrap resolver
* remove support for bootstraper of resolver
* godoc and code-style changes
Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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* pki: Initial commit of embedded ACME server (#3021)
* reverseproxy: Support auto-managed TLS client certificates (#3021)
* A little cleanup after today's review session
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* 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
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We'll need that context in v2.1 when the transport can manage its own
client certificates; see #3198
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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.
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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
}
}
```
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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.
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See https://caddy.community/t/http-proxy-and-non-get-retries/6304
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My goodness that was complicated
Blessed be request.Context
Sort of
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