Chromoting protocol implementation based on P2P Transport API.

Then new code is not enabled yet, there are still some issues that
need to be resolved before this code is used by default. I plan to
make the switch in M16, as there isn't enough time left in M15.

TEST=Manual
BUG=51198

Review URL: http://codereview.chromium.org/7778022

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@100805 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 146 insertions, 0 deletions

diff --git a/remoting/protocol/pepper_session_manager.cc b/remoting/protocol/pepper_session_manager.cc
new file mode 100644
index 0000000..28d979d
--- /dev/null
+++ b/remoting/protocol/pepper_session_manager.cc
@@ -0,0 +1,146 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "remoting/protocol/pepper_session_manager.h"
+
+#include "base/bind.h"
+#include "remoting/jingle_glue/jingle_info_request.h"
+#include "remoting/jingle_glue/signal_strategy.h"
+#include "remoting/protocol/jingle_messages.h"
+#include "remoting/protocol/pepper_session.h"
+#include "third_party/libjingle/source/talk/base/socketaddress.h"
+#include "third_party/libjingle/source/talk/xmllite/xmlelement.h"
+
+using buzz::QName;
+
+namespace remoting {
+namespace protocol {
+
+PepperSessionManager::PepperSessionManager(pp::Instance* pp_instance)
+    : pp_instance_(pp_instance),
+      signal_strategy_(NULL),
+      listener_(NULL),
+      allow_nat_traversal_(false) {
+}
+
+PepperSessionManager::~PepperSessionManager() {
+  Close();
+}
+
+void PepperSessionManager::Init(
+    const std::string& local_jid,
+    SignalStrategy* signal_strategy,
+    SessionManager::Listener* listener,
+    crypto::RSAPrivateKey* private_key,
+    const std::string& certificate,
+    bool allow_nat_traversal) {
+  listener_ = listener;
+  local_jid_ = local_jid;
+  signal_strategy_ = signal_strategy;
+  private_key_.reset(private_key);
+  certificate_ = certificate;
+  allow_nat_traversal_ = allow_nat_traversal;
+
+  signal_strategy_->SetListener(this);
+
+  // If NAT traversal is enabled then we need to request STUN/Relay info.
+  if (allow_nat_traversal) {
+    jingle_info_request_.reset(
+        new JingleInfoRequest(signal_strategy_->CreateIqRequest(), NULL));
+    jingle_info_request_->Send(base::Bind(
+        &PepperSessionManager::OnJingleInfo, base::Unretained(this)));
+  } else {
+    listener_->OnSessionManagerInitialized();
+  }
+}
+
+void PepperSessionManager::OnJingleInfo(
+    const std::string& relay_token,
+    const std::vector<std::string>& relay_hosts,
+    const std::vector<talk_base::SocketAddress>& stun_hosts) {
+  DCHECK(CalledOnValidThread());
+
+  // TODO(sergeyu): Add support for multiple STUN/relay servers when
+  // it's implemented in libjingle and P2P Transport API.
+  transport_config_.stun_server = stun_hosts[0].ToString();
+  transport_config_.relay_server = relay_hosts[0];
+  transport_config_.relay_token = relay_token;
+  LOG(INFO) << "STUN server: " << transport_config_.stun_server
+            << " Relay server: " << transport_config_.relay_server
+            << " Relay token: " << transport_config_.relay_token;
+
+  listener_->OnSessionManagerInitialized();
+}
+
+Session* PepperSessionManager::Connect(
+    const std::string& host_jid,
+    const std::string& host_public_key,
+    const std::string& client_token,
+    CandidateSessionConfig* config,
+    Session::StateChangeCallback* state_change_callback) {
+  PepperSession* session = new PepperSession(this);
+  session->StartConnection(host_jid, host_public_key, client_token,
+                           config, state_change_callback);
+  sessions_[session->session_id_] = session;
+  return session;
+}
+
+void PepperSessionManager::Close() {
+  DCHECK(CalledOnValidThread());
+
+  // Close() can be called only after all sessions are destroyed.
+  DCHECK(sessions_.empty());
+
+  listener_ = NULL;
+  jingle_info_request_.reset();
+
+  signal_strategy_->SetListener(NULL);
+}
+
+bool PepperSessionManager::OnIncomingStanza(const buzz::XmlElement* stanza) {
+  if (!JingleMessage::IsJingleMessage(stanza))
+    return false;
+
+  JingleMessage message;
+  std::string error;
+  if (!message.ParseXml(stanza, &error)) {
+    SendReply(stanza, JingleMessageReply(JingleMessageReply::BAD_REQUEST));
+    return true;
+  }
+
+  if (message.action == JingleMessage::SESSION_INITIATE) {
+    SendReply(stanza, JingleMessageReply(
+        JingleMessageReply::NOT_IMPLEMENTED,
+        "Can't accept sessions on the client"));
+    return true;
+  }
+
+  SessionsMap::iterator it = sessions_.find(message.sid);
+  if (it == sessions_.end()) {
+    SendReply(stanza, JingleMessageReply(JingleMessageReply::INVALID_SID));
+    return true;
+  }
+
+  JingleMessageReply reply;
+  it->second->OnIncomingMessage(message, &reply);
+  SendReply(stanza, reply);
+  return true;
+}
+
+IqRequest* PepperSessionManager::CreateIqRequest() {
+  return signal_strategy_->CreateIqRequest();
+}
+
+void PepperSessionManager::SendReply(const buzz::XmlElement* original_stanza,
+                                     const JingleMessageReply& reply) {
+  buzz::XmlElement* stanza = reply.ToXml(original_stanza);
+  signal_strategy_->SendStanza(stanza);
+}
+
+void PepperSessionManager::SessionDestroyed(PepperSession* session) {
+  sessions_.erase(session->session_id_);
+}
+
+}  // namespace protocol
+}  // namespace remoting