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middleware/httpproxy: add debug queries (#446)

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* middleware/httproxy: implement debug queries

Not too useful at the moment, but o-o.debug queries are supported
and return the Comment from dns.google.com.

Note that this is not always set.

* improve documentation

* Testing cleanups
This commit is contained in:
Miek Gieben
2016-11-29 09:54:57 +00:00
committed by GitHub
parent a1b9f96d87
commit 4cfd19c7c9
12 changed files with 108 additions and 55 deletions
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4
middleware/etcd/README.md
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@@ -37,7 +37,7 @@ etcd [ZONES...] {
* **ENDPOINT** the etcd endpoints. Defaults to "http://localhost:2397".
* `upstream` upstream resolvers to be used resolve external names found in etcd (think CNAMEs)
pointing to external names. If you want CoreDNS to act as a proxy for clients, you'll need to add
the proxy middleware. **ADDRESS* can be an IP address, and IP:port or a string pointing to a file
the proxy middleware. **ADDRESS** can be an IP address, and IP:port or a string pointing to a file
that is structured as /etc/resolv.conf.
* `tls` followed the cert, key and the CA's cert filenames.
* `debug` allows for debug queries. Prefix the name with `o-o.debug.` to retrieve extra information in the
@@ -127,7 +127,7 @@ Or with *debug* queries enabled:
When debug queries are enabled CoreDNS will return errors and etcd records encountered during the resolution
process in the response. The general form looks like this:
skydns.test.skydns.dom.a. 300 CH TXT "127.0.0.1:0(10,0,,false)[0,]"
skydns.test.skydns.dom.a. 0 CH TXT "127.0.0.1:0(10,0,,false)[0,]"
This shows the complete key as the owername, the rdata of the TXT record has:
`host:port(priority,weight,txt content,mail)[targetstrip,group]`.