Add JingleSession::OnRouteChange(), and pass IP endpoint information to a

remoting/protocol/jingle_session.cc

Index: remoting/protocol/jingle_session.cc
diff --git a/remoting/protocol/jingle_session.cc b/remoting/protocol/jingle_session.cc
index 1b3c1a930448e986e406be8a3bda8af6c3ef9e63..5f5b6b5e40a7e67585ad3321c25cd0163e0908fe 100644
--- a/remoting/protocol/jingle_session.cc
+++ b/remoting/protocol/jingle_session.cc
@@ -7,11 +7,15 @@
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/location.h"
+#include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/rand_util.h"
 #include "base/stl_util.h"
 #include "crypto/hmac.h"
+#include "jingle/glue/utils.h"
+#include "net/base/ip_endpoint.h"
 #include "net/base/net_errors.h"
+#include "net/base/net_util.h"
 #include "net/socket/stream_socket.h"
 #include "remoting/base/constants.h"
 #include "remoting/protocol/auth_util.h"
@@ -132,6 +136,12 @@ void JingleSession::SetStateChangeCallback(
   state_change_callback_ = callback;
 }
 
+void JingleSession::SetRouteChangeCallback(
+    const RouteChangeCallback& callback) {
+  DCHECK(CalledOnValidThread());
+  route_change_callback_ = callback;
+}
+
 Session::Error JingleSession::error() {
   DCHECK(CalledOnValidThread());
   return error_;
@@ -466,6 +476,8 @@ void JingleSession::AddChannelConnector(
   cricket::TransportChannel* raw_channel =
       cricket_session_->CreateChannel(content_name, name);
 
+  raw_channel->SignalRouteChange.connect(this, &JingleSession::OnRouteChange);
+
   if (!jingle_session_manager_->allow_nat_traversal_ &&
       !cricket_session_->initiator()) {
     // Don't make outgoing connections from the host to client when
@@ -491,6 +503,19 @@ void JingleSession::OnChannelConnectorFinished(
   channel_connectors_.erase(name);
 }
 
+void JingleSession::OnRouteChange(cricket::TransportChannel* channel,
+                                  const cricket::Candidate& candidate) {
+  net::IPEndPoint end_point;
+  if (!jingle_glue::SocketAddressToIPEndPoint(candidate.address(),
+                                              &end_point)) {
+    NOTREACHED();
+    return;
+  }
+
+  if (!route_change_callback_.is_null())
+    route_change_callback_.Run(channel->name(), end_point);
+}
+
 const cricket::ContentInfo* JingleSession::GetContentInfo() const {
   const cricket::SessionDescription* session_description;
   // If we initiate the session, we get to specify the content name. When