Don't reject on media type parameters

Restify uses the negotiator module, which will fail to match media types
in the client's `accepts` header if there are parameters other than q
attached to them.  This results in 406 errors when something like
"Accepts: text/plain; charset=utf8" is sent.

Restify doesn't let you specify the charset as an acceptable parameter;
it strips that out of the server's list before checking.

This hack removes any charset specifiers from the accepts header.  It
should probably be removed at a later time, after the negotiator module
is fixed (see jshttp/negotiator#35)

I found this as swagger-ui's requests have charsets appended to the
accepts header, so it was failing with 406 errors.

lib/api.ls

@@ -9,6 +9,8 @@ require! {
   'prelude-ls': {map}
   fs
   npid
+  'media-type'
+  contenttype
 }
 
 swagger = 
@@ -118,15 +120,30 @@ web_proxy = (req, res, next) ->
 
 swaggerJson = (req, res) ->
   res.send JSON.stringify swagger
+#
+# This is because the negotiator module will balk if any media type
+# parameter (except for q) doesn't explicitly match the server's
+# allowed parameters.  And those allowed parameters aren't allowed to
+# have parameters specified.
+#
+
+cleanAccepts = (req, res, next) ->
+    types = []
+    for type in contenttype.splitContentTypes req.headers.accept
+      media = mediaType.fromString type
+      delete media.parameters.charset
+      types.push media.asString!
+    req.headers.accept = types.join ', '
+    next!
 
 export init = (server, logobj) ->
   logger = logobj
   swagger.host = server.name
   server.use setHeader
+  server.use cleanAccepts
   server.use restify.bodyParser!
+  server.use restify.acceptParser server.acceptable
   server.use restify.CORS!
-  server.use restify.fullResponse!
-
   server.get /^(|\/|\/index.html|\/w.*)$/ web_proxy
   commands.init!
   makeroutes server, logger

package.json

@@ -22,9 +22,12 @@
     "basho-riak-client": "http://kvs.io/w/riak-client.tgz",
     "bunyan": "^1.3.5",
     "bunyan-prettystream": "^0.1.3",
+    "contenttype": "^1.0.1",
     "dtrace-provider": "^0.4.0",
     "ipv6": "^3.1.1",
     "ipware": "0.0.5",
+    "livescript": "^1.4.0",
+    "media-type": "^0.2.0",
     "node-restify-swagger": "^0.1.8",
     "node-restify-validation": "^1.0.4",
     "npid": "^0.4.0",