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This is temporary as we prepare for a stable v2 release. We don't want
to make promises we don't know we can keep, and the Starlark integration
deserves much more focused attention which resources and funding do not
currently permit. When the project is financially stable, I will be able
to revisit this properly and add flexible, robust Starlark scripting
support to Caddy 2.
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This ensure that if there are multiple certs that match a particular
ServerName or other parameter, then specifically the one the user
provided in the Caddyfile will be used.
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This is necessary to avoid a race for sockets. Both the HTTP servers and
CertMagic solvers will try to bind the HTTP/HTTPS ports, but we need to
make sure that our HTTP servers bind first. This is kind of a new thing
now that management is async in Caddy 2.
Also update to CertMagic 0.9.2, which fixes some async use cases at
scale.
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Fixes #3001
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See https://caddy.community/t/caddy-server-that-returns-only-ip-address-as-text/6928/6?u=matt
In most cases, we will want to apply header operations immediately,
rather than waiting until the response is written. The exceptions are
generally going to be if we are deleting a header field or if a field is
to be overwritten. We now automatically defer header ops if deleting a
header field, and allow the user to manually enable deferred mode with
the defer subdirective.
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Paths always begin with a slash, and omitting the leading slash could be
convenient to avoid confusion with a path matcher in the Caddyfile. I do
not think there would be any harm to implicitly add the leading slash.
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v2: http: Fix ciphersuite logging
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* v2: add documentation for circuit breaker config and "random selection" load balancing policy
* v2: rename circuit breaker config inline key from `type` to `breaker` to avoid json key clash between the `circuit_breaker` type and the `type` field of the generic circuit breaker Config struct used by circuit breaking implementations
* v2: restore the circuit breaker inline key to `type` and rename the name circuit breaker config field from `Type` to `Factor`
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The fix that was initially put forth in #2971 was good, but only for
up to one layer of nesting. The real problem was that we forgot to
increment nesting when already inside a block if we saw another open
curly brace that opens another block (dispenser.go L157-158).
The new 'handle' directive allows HTTP Caddyfiles to be designed more
like nginx location blocks if the user prefers. Inside a handle block,
directives are still ordered just like they are outside of them, but
handler blocks at a given level of nesting are mutually exclusive.
This work benefitted from some refactoring and cleanup.
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This ensures that only the first matching route is used.
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Before, modifying the path might have affected how a new query string
was built if the query string relied on the path. Now, we build each
component in isolation and only change the URI on the request later.
Also, prevent trailing & in query string.
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This splits automatic HTTPS into two phases. The first provisions the
route matchers and uses them to build the domain set and configure
auto HTTP->HTTPS redirects. This happens before the rest of the
provisioning does.
The second phase takes place at the beginning of the app start. It
attaches pointers to the tls app to each server, and begins certificate
management for the domains that were found in the first phase.
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Sigh... this is what I get for writing code when I'm tired and sick.
See https://github.com/caddyserver/caddy/commit/8be1f0ea668492000cdefbd937e0359bdc24bfc1#r36764627
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Including servers for HTTP->HTTPS redirects which do not get provisioned
like the rest.
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I am not sure if the query_string one is necessary or useful yet. We
can always add it later if needed.
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Our new parser also preserves original parameter order, rather than
re-encoding using the std lib (which sorts).
The renamed parameters are a breaking change but they're new enough
that I don't think anyone is using them.
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In case on-demand TLS is enabled, in that case we don't know the only
names that have automatic HTTPS.
See https://caddy.community/t/v2-http-to-https-redirects-fail-for-on-demand-ssl-certs/6742?u=matt
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* http: path matcher: exact match by default; substring matches (#2959)
This is a breaking change.
* caddyfile: Change "matcher" directive to "@matcher" syntax (#2959)
* cmd: Assume caddyfile adapter for config files named Caddyfile
* Sub-sort handlers by path matcher length (#2959)
Caddyfile-generated subroutes have handlers, which are sorted first by
directive order (this is unchanged), but within directives we now sort
by specificity of path matcher in descending order (longest path first,
assuming that longest path is most specific).
This only applies if there is only one matcher set, and the path
matcher in that set has only one path in it. Path matchers with two or
more paths are not sorted like this; and routes with more than one
matcher set are not sorted like this either, since specificity is
difficult or impossible to infer correctly.
This is a special case, but definitely a very common one, as a lot of
routing decisions are based on paths.
* caddyfile: New 'route' directive for appearance-order handling (#2959)
* caddyfile: Make rewrite directives mutually exclusive (#2959)
This applies only to rewrites in the top-level subroute created by the
HTTP caddyfile.
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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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Fixes panic if no upstream handler wrote anything to the response
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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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See https://caddy.community/t/v2-basicauth-bug/6738?u=matt
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* v2: housekeeping: update tools
* v2: housekeeping: adhere to US locale in spelling
* v2: housekeeping: simplify code
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The interface was only making things difficult; a concrete pointer is
probably best.
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It seems silly to have to add a single, empty TLS connection policy to
a server to enable TLS when it's only listening on the HTTPS port. We
now do this for the user as part of automatic HTTPS (thus, it can be
disabled / overridden).
See https://caddy.community/t/v2-catch-all-server-with-automatic-tls/6692/2?u=matt
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These will be used in the new automated documentation system
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(Try saying "patch path match" ten times fast)
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* Implement UDP writer
* Implement Net Writer
* Utilize Caddy's address parsing functions
* A couple little fixes (see #2884)
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