Actually set tls.Config.PreferServerCipherSuites

It was set by default on the caddy-internal config object, and even
checked for conflicts, but it was never actually reflected on the
tls.Config.

This will have user-visible changes: a client that prefers, say, AES-CBC
but also supports AES-GCM would have used AES-CBC befor this, and will
use AES-GCM after.

This is desirable and important behavior, because if for example the
server wanted to support 3DES, but *only if it was strictly necessary*,
it would have had no way of doing so with PreferServerCipherSuites
false, as the client preference would have won.

This change is still experimental.

This function should not be used outside of development. It destroys the
absolute ordering and guarantees of correctness. Multiple uses of it
may work fine, but maybe not if they overlap, causing non-deterministic
builds which is bad. However, this can be convenient when developing
a plugin by calling it from an init() function, since you don't have
to modify the Caddy source code just to try your plugin.

log: add multiple log entry test

Signed-off-by: Tw <tw19881113@gmail.com>

log: support multiple log entries under one path scope

fix issue #1044
Signed-off-by: Tw <tw19881113@gmail.com>

Keep quic protocol headers only between one hop

Removing quic protocol headers from being persisted during proxy requests.
Not removing them could lead to the client attempting to connect to the wrong port.
This makes the quic headers consistent with other protocol headers.

Add plugin capabilities for tls storage.

To use a plugged in storage, specify "storage storage_name" in the tls block of the Caddyfile, by default, file storage will be used

No need to check if SiteExists if the config is not managed or the name
does not even qualify.

Proxy: Set MaxIdleConnsPerHost to -1 to prevent Idle Conns

Proxy: Instead of setting DisableKeepAlives, set MaxIdleConnsPerHost to -1 to prevent net/http from pooling the connections. DisableKeepAlives causes net/http to send a Connection: Closed header which is bad. Fixes #1056

capture request body normally

fix issue #1015
Signed-off-by: Tw <tw19881113@gmail.com>

Signed-off-by: Tw <tw19881113@gmail.com>

Signed-off-by: Tw <tw19881113@gmail.com>

Add error parameter to storage.SiteExists()

Implement missing bits for an external servertype

Make ServerListeners public and add two helper methods to get access
to the address they listen on. This is useful for tests (among other
things)

Also make DefaultConfigFile a var so it can be overridden by server
types.

Fix for invalid environment variable names used on windows that start…

Fix for invalid environment variable names used on windows that start with an equals symbol. Even though this contradicts the Microsoft docs.

Fixes https://forum.caddyserver.com/t/basic-caddy-installation-failing-on-automatic-https/472?u=matt

* * Added support for environment variables to 'templates' module.

* Fixed flaw in test caused by environment variable ordering during testing on CI.

* Updated some local variables to camel-case.

* Reverted changes to replacer as environment variables are processed elsewhere.

* Removed PrintEnv functionality in favour of documenting using template range.

Fix error which lead to skipping tests in 'errors.TestErrorsParse'