[frock-9] Improve documentation around whitelisting and default white…

…list

README.md

@@ -89,6 +89,9 @@ This examples expects that your `PATH` is set to run Node.js packages from your
 project's installed `node_modules`; see the [Understanding Packages][packages]
 section of the documentation for details.
 
+_Note:_ By default, frock only allows connections from `localhost`; see the
+[docs on connection filtering][filtering] for details.
+
 ## Detailed Documentation
 
 frock's [documentation](./docs) is split into several sections:
@@ -142,6 +145,7 @@ Apache 2.0, see [LICENSE](./LICENSE) for details.
 [plugins]: ./docs/plugins.md
 [middleware]: ./docs/middleware.md
 [frockfile]: ./docs/frockfile.md
+[filtering]: ./docs/frockfile.md#connection-object-optional 
 [examples]: ./examples
 [static]: http://www.npmjs.com/packages/frock-static
 [proxy]: http://www.npmjs.com/packages/frock-proxy

src/core-httpserver.js

@@ -154,7 +154,9 @@ function defaultRoute (req, res) {
 }
 
 function onWhitelistFail (req, res) {
-  const msg = 'access from non-whitelisted, or from blacklisted address'
+  const msg = 'access from non-whitelisted, or from blacklisted address. ' +
+    'see https://github.com/urbanairship/frock/blob/master/docs/frockfile.md#connection-object-optional ' +
+    'for further details.'
 
   res.statusCode = 403
   res.end(msg)

src/core-socketserver.js

@@ -63,5 +63,9 @@ createSocketServer._onSocketWhitelistFail = onSocketWhitelistFail
 
 function onSocketWhitelistFail (client) {
   client.end()
-  log.info('access socket from non-whitelisted, or from blacklisted address')
+  log.info(
+    'access socket from non-whitelisted, or from blacklisted address. ' +
+    'see https://github.com/urbanairship/frock/blob/master/docs/frockfile.md#connection-object-optional ' +
+    'for further details.'
+  )
 }