* Move *proxy* to external

move the proxy plugin into coredns/proxy and remove it as a default
plugin. Link the proxy to deprecated in plugin.cfg

coredns/proxy doesn't compile because of the vendoring :(
Signed-off-by: Miek Gieben <miek@miek.nl>

* Add github.com/coredns/proxy
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Since we already removed vendor directory.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Remove vendor and go-dep
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Add go.mod
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update Makefile and .travis.yml
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Copied from https://github.com/coredns/coredns.io/pull/133Signed-off-by: Miek Gieben <miek@miek.nl>

Automatically submitted.

* Put release notes in notes subdir

Verbatim copy of the current set of notes on coredns.io. Copy them
here to make them authoritative.

'make sync' on the coredns.io site copies them back in. They need to be
formatted in Hugo style.
Signed-off-by: Miek Gieben <miek@miek.nl>

* pull latest
Signed-off-by: Miek Gieben <miek@miek.nl>

Signed-off-by: Miek Gieben <miek@miek.nl>

few changes before the 1.4.0 release.
Signed-off-by: Miek Gieben <miek@miek.nl>

Signed-off-by: Miek Gieben <miek@miek.nl>

Signed-off-by: zhoulin xie <zhoulin.xie@daocloud.io>

Mechanical change: make -f Makefile.doc
Signed-off-by: Miek Gieben <miek@miek.nl>

From [Golang coding convention](https://github.com/golang/go/wiki/CodeReviewComments#error-strings)

Co-Authored-By: Nguyen Van Trung [trungnvfet@outlook.com](mailto:trungnvfet@outlook.com)
Signed-off-by: Nguyen Quang Huy [huynq0911@gmail.com](mailto:huynq0911@gmail.com)

Signed-off-by: vanduc95 <ducnv@vn.fujitsu.com>

Signed-off-by: Vu Cong Tuan <tuanvc@vn.fujitsu.com>

Ignore temporary files *~ when editting source codes with
emacs.

Co-Authored-By: Dao Cong Tien tiendc@vn.fujitsu.com
Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

* Fixing panic in case if there's no response

There could be a situation when there's no response after ServeDNS call. With the current implementation, this leads to panic.

* Add comment

Signed-off-by: Miek Gieben <miek@miek.nl>

Currently, the modified link is out of date. This patch aims to update
this link to the working one that user can access.
Co-Authored-By: Nguyen Phuong An <AnNP@vn.fujitsu.com>
Signed-off-by: Kim Bao Long <longkb@vn.fujitsu.com>

There is no need to do this at the top of the handler, move this
down into the function.
Signed-off-by: Miek Gieben <miek@miek.nl>

Automatically submitted.

Signed-off-by: darshanime <deathbullet@gmail.com>

Signed-off-by: zhoulin xie <zhoulin.xie@daocloud.io>

Part of the changes in 2591 modifies the vendor directory
which should not be modified. `dep ensure` will change it back.

This fix reverts the change of
```
vendor/github.com/apache/thrift/lib/go/thrift/simple_json_protocol.go
```

in 2591.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

Although it is spelling mistakes, it might make an affects
while reading.
Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

Currently, there are some links that we access with **HTTP**, it is
redirected to **HTTPS** automatically. So this commit aims to
replace **http://...** by **https://...** for security.
Co-Authored-By: Nguyen Phuong An <AnNP@vn.fujitsu.com>
Signed-off-by: Kim Bao Long <longkb@vn.fujitsu.com>

Signed-off-by: Xiao An <hac@zju.edu.cn>

Signed-off-by: Miek Gieben <miek@miek.nl>

Although it is spelling mistakes, it might make an affects
while reading.
Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

Signed-off-by: Nguyen Phuong An <AnNP@vn.fujitsu.com>

Although it is spelling mistakes, it might make an affects
while reading.
Signed-off-by: Nguyen Hai Truong <truongnh@vn.fujitsu.com>

Guard the access of h.size as this is now a data race.

Fixes #2571
Signed-off-by: Miek Gieben <miek@miek.nl>

* Upgrade caddy to 0.11.2

Redo of #2505 (cherry-picked commit)
Signed-off-by: Miek Gieben <miek@miek.nl>

* .4 has been released
Signed-off-by: Miek Gieben <miek@miek.nl>

Reload didn't take proper care to protect the fields from use in
different goroutines. Add a mutex and add helpers for usage and
interval.
Signed-off-by: Miek Gieben <miek@miek.nl>

Automatically submitted.

TestLookupAutoPathErratic sometimes fail on TravisCI saying below

```
=== RUN   TestLookupAutoPathErratic
--- FAIL: TestLookupAutoPathErratic (8.30s)
    erratic_autopath_test.go:39: Test 0, failed to sent query: "read udp [::1]:39758->[::1]:56643: i/o timeout"
FAIL
```

The failure happens when Google replies slowly.
This PR changes to not use Google but run CoreDNS locally and proxy to the server.

---

Because the failure depends on Google, sometimes it happens frequently but sometimes it doesn't happen.
I hope following test help you reproduce it.

```
func TestLookupAutoPathErratic2(t *testing.T) {
	for i := 0; i < 200; i++ {
		TestLookupAutoPathErratic(t)
	}
}
```

or I can reproduce it by changing proxy to other DNS like 1.1.1.1 instead of 8.8.8.8 too