Merge pull request #2996 from w3c/transport-qs-parsing

Complete ice server url validation

amendments.json

@@ -57,8 +57,14 @@
   "validate-ice-server-algo": [
     {
       "description": "Use the url spec to parse ice server urls",
-      "pr": 2853,
+      "pr": [2853, 2996],
       "type": "correction",
+      "tests": [
+	"webrtc/RTCConfiguration-iceServers.html"
+      ],
+      "testUpdates": [
+	"web-platform-tests/wpt#47959"
+      ],
       "status": "candidate",
       "id": 33
     }

webrtc.html

@@ -3143,7 +3143,7 @@ <h4>
                   For "turn" and "turns" schemes, this and the steps below validate
                   [[!RFC7065]] section 3.1.</p>
               </li>
-              <li><p>TODO: validate ?transport=udp|tcp (see <a href="https://github.com/w3c/webrtc-pc/pull/2996">PR #2996</a>)</p></li>
+              <li><p>If <var>parsedURL</var>'s [=url/query=] is non-null and if <var>parsedURL</var>'s [=url/query=] is different from either <code>"transport=udp"</code> or <code>"transport=tcp"</code>, [=exception/throw=] a "{{SyntaxError}}" {{DOMException}}.</p></li>
               <li>
                 <p>
                   If <var>parsedURL</var>'s' [=url/scheme=] is <code>"turn"</code> or