Modify PeerConnection for end-to-end QuicDataChannel usage

webrtc/api/webrtcsdp.cc

Index: webrtc/api/webrtcsdp.cc
diff --git a/webrtc/api/webrtcsdp.cc b/webrtc/api/webrtcsdp.cc
index 93d4acc6c3fad5fd2e2612ff22af02de2554baeb..e73d3d9421efd07fd8f87591561d44c4dccbc77c 100644
--- a/webrtc/api/webrtcsdp.cc
+++ b/webrtc/api/webrtcsdp.cc
@@ -151,6 +151,7 @@ static const char kAttributeSctpPort[] = "sctp-port";
 // Experimental flags
 static const char kAttributeXGoogleFlag[] = "x-google-flag";
 static const char kValueConference[] = "conference";
+static const char kAttributeQuic[] = "quic";

[Taylor Brandstetter, 2016/04/01 23:23:42]

Does it make sense for this to be an attribute? I think it would make more sense
as a profile string. Instead of "UDP/TLS/RTP/SAVPF" we could use "UDP/QUIC".

 
 // Candidate
 static const char kCandidateHost[] = "host";
@@ -820,6 +821,11 @@ std::string SdpSerialize(const JsepSessionDescription& jdesc,
   // Time Description.
   AddLine(kTimeDescription, &message);
 
+  // QUIC Description.
+  if (desc->quic()) {
+    AddLine("a=quic", &message);

[Taylor Brandstetter, 2016/04/01 23:23:42]

Replace this with:
     InitAttrLine(kAttributeQuic, &os);
     AddLine(os.str(), &message);

+  }
+
   // Group
   if (desc->HasGroup(cricket::GROUP_TYPE_BUNDLE)) {
     std::string group_line = kAttrGroup;
@@ -2004,6 +2010,8 @@ bool ParseSessionDescription(const std::string& message, size_t* pos,
         return false;
       }
       session_extmaps->push_back(extmap);
+    } else if (HasAttribute(line, kAttributeQuic)) {
+      desc->set_quic(true);
     }
   }