Re: #2009, 1.9 or newer is needed because of the introduction of `sync.Map`

Fixes #1961

According to RFC 7231 and RFC 7230, there's
no reason a GET-Request can't have a body
(other than it possibly not being supported
by existing software). It's use is simply not
defined, and is left to the application.

Not a huge issue, but has security implications if OAuth tokens leaked

Adding the bash command for downloading the caddy.service file from the reposetory. Because it was easy to forget where you find it.

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

* shutdown: allow graceful shutdown for SIGTERM on posix

The signal is already trapped; make it do the same thing as SIGQUIT to
be more inline with Unix/Linux shutdown expectations.

Fixes #1993

* Implement comment feedback ideas

* Turn on KeepAlive in QuicConfig of RoundTripper

* Update reverseproxy.go

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

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

* implemented source of default file for sysvinit
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* added documentation in README
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* fixed sourcing command for sh
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* implemented source of default file for sysvinit
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* added documentation in README
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* fixed sourcing command for sh
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* implemented DAEMONOPTS overwrite
Signed-off-by: root360-AndreasUlm <andreas.ulm@root360.de>

* Correct browse modified date alignment

* New solution to adjust alignment

* caddymain: fix setCPU silently ignoring small percent values

the percent value is resolved in a GOMAXPROCS relative number by simple
division, thus rounding down the non-integer quotient. If zero, the call
to runtime.GOMAXPROCS is silently ignored.

We decide here to exceptionally round up the CPU cap in case of percent
values that are too small.

* caddymain: gofmt -s

* Update README.md

I believe the owner and group of the `chown` command here are mixed up. As it was caused a permissions issue, with the service being unable to read the directory.

* Update README.md

* Update README.md

Revert changes back to the original suggested changes

* First working mask

* IP Mask working with defaults and empty

* add tests for ipmask

* Store Mask as setup, some tidying, cleaner flow

* Prevent mask from running when directive not present

* use custom replacement to store masked ip

Caddyfile snippets

This allows custom replacements to be defined in a way that propagates
throughout all plugins.

* Checking that a server listener is not nil before printing verbose information

* Improved readability of a loop

* Simplify parseUpstream function

* Add SRV support for proxy upstream

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

This adds the ask sub-directive to tls that defines the URL of a backend HTTP service to be queried during the TLS handshake to determine if an on-demand TLS certificate should be acquired for incoming hostnames. When the ask sub-directive is defined, Caddy will query the URL for permission to acquire a cert by making a HTTP GET request to the URL including the requested domain in the query string. If the backend service returns a 2xx response Caddy will acquire a cert. Any other response code (including 3xx redirects) are be considered a rejection and the certificate will not be acquired.

* Update build instruction

This changes add proper an easy instruction for building.

* Update README.md

The rc.subr framework already takes care of substituting user. So, using
daemon's -u option is double user-substitution and fails if $caddy_user
is non-root.

caddy.go:569: could be simplified

sigtrap_posix.go:87: value of inst is never used

upgrade.go:151: should omit nil check; len() for nil slices is defined as zero