Adds trunk/talk folder of revision 359 from libjingles google code to
trunk/talk
git-svn-id: http://webrtc.googlecode.com/svn/trunk@4318 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/p2p/base/stunrequest.cc b/talk/p2p/base/stunrequest.cc
new file mode 100644
index 0000000..b3b1118
--- /dev/null
+++ b/talk/p2p/base/stunrequest.cc
@@ -0,0 +1,210 @@
+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "talk/p2p/base/stunrequest.h"
+
+#include "talk/base/common.h"
+#include "talk/base/helpers.h"
+#include "talk/base/logging.h"
+
+namespace cricket {
+
+const uint32 MSG_STUN_SEND = 1;
+
+const int MAX_SENDS = 9;
+const int DELAY_UNIT = 100; // 100 milliseconds
+const int DELAY_MAX_FACTOR = 16;
+
+StunRequestManager::StunRequestManager(talk_base::Thread* thread)
+ : thread_(thread) {
+}
+
+StunRequestManager::~StunRequestManager() {
+ while (requests_.begin() != requests_.end()) {
+ StunRequest *request = requests_.begin()->second;
+ requests_.erase(requests_.begin());
+ delete request;
+ }
+}
+
+void StunRequestManager::Send(StunRequest* request) {
+ SendDelayed(request, 0);
+}
+
+void StunRequestManager::SendDelayed(StunRequest* request, int delay) {
+ request->set_manager(this);
+ ASSERT(requests_.find(request->id()) == requests_.end());
+ request->Construct();
+ requests_[request->id()] = request;
+ thread_->PostDelayed(delay, request, MSG_STUN_SEND, NULL);
+}
+
+void StunRequestManager::Remove(StunRequest* request) {
+ ASSERT(request->manager() == this);
+ RequestMap::iterator iter = requests_.find(request->id());
+ if (iter != requests_.end()) {
+ ASSERT(iter->second == request);
+ requests_.erase(iter);
+ thread_->Clear(request);
+ }
+}
+
+void StunRequestManager::Clear() {
+ std::vector<StunRequest*> requests;
+ for (RequestMap::iterator i = requests_.begin(); i != requests_.end(); ++i)
+ requests.push_back(i->second);
+
+ for (uint32 i = 0; i < requests.size(); ++i) {
+ // StunRequest destructor calls Remove() which deletes requests
+ // from |requests_|.
+ delete requests[i];
+ }
+}
+
+bool StunRequestManager::CheckResponse(StunMessage* msg) {
+ RequestMap::iterator iter = requests_.find(msg->transaction_id());
+ if (iter == requests_.end())
+ return false;
+
+ StunRequest* request = iter->second;
+ if (msg->type() == GetStunSuccessResponseType(request->type())) {
+ request->OnResponse(msg);
+ } else if (msg->type() == GetStunErrorResponseType(request->type())) {
+ request->OnErrorResponse(msg);
+ } else {
+ LOG(LERROR) << "Received response with wrong type: " << msg->type()
+ << " (expecting "
+ << GetStunSuccessResponseType(request->type()) << ")";
+ return false;
+ }
+
+ delete request;
+ return true;
+}
+
+bool StunRequestManager::CheckResponse(const char* data, size_t size) {
+ // Check the appropriate bytes of the stream to see if they match the
+ // transaction ID of a response we are expecting.
+
+ if (size < 20)
+ return false;
+
+ std::string id;
+ id.append(data + kStunTransactionIdOffset, kStunTransactionIdLength);
+
+ RequestMap::iterator iter = requests_.find(id);
+ if (iter == requests_.end())
+ return false;
+
+ // Parse the STUN message and continue processing as usual.
+
+ talk_base::ByteBuffer buf(data, size);
+ talk_base::scoped_ptr<StunMessage> response(iter->second->msg_->CreateNew());
+ if (!response->Read(&buf))
+ return false;
+
+ return CheckResponse(response.get());
+}
+
+StunRequest::StunRequest()
+ : count_(0), timeout_(false), manager_(0),
+ msg_(new StunMessage()), tstamp_(0) {
+ msg_->SetTransactionID(
+ talk_base::CreateRandomString(kStunTransactionIdLength));
+}
+
+StunRequest::StunRequest(StunMessage* request)
+ : count_(0), timeout_(false), manager_(0),
+ msg_(request), tstamp_(0) {
+ msg_->SetTransactionID(
+ talk_base::CreateRandomString(kStunTransactionIdLength));
+}
+
+StunRequest::~StunRequest() {
+ ASSERT(manager_ != NULL);
+ if (manager_) {
+ manager_->Remove(this);
+ manager_->thread_->Clear(this);
+ }
+ delete msg_;
+}
+
+void StunRequest::Construct() {
+ if (msg_->type() == 0) {
+ Prepare(msg_);
+ ASSERT(msg_->type() != 0);
+ }
+}
+
+int StunRequest::type() {
+ ASSERT(msg_ != NULL);
+ return msg_->type();
+}
+
+const StunMessage* StunRequest::msg() const {
+ return msg_;
+}
+
+uint32 StunRequest::Elapsed() const {
+ return talk_base::TimeSince(tstamp_);
+}
+
+
+void StunRequest::set_manager(StunRequestManager* manager) {
+ ASSERT(!manager_);
+ manager_ = manager;
+}
+
+void StunRequest::OnMessage(talk_base::Message* pmsg) {
+ ASSERT(manager_ != NULL);
+ ASSERT(pmsg->message_id == MSG_STUN_SEND);
+
+ if (timeout_) {
+ OnTimeout();
+ delete this;
+ return;
+ }
+
+ tstamp_ = talk_base::Time();
+
+ talk_base::ByteBuffer buf;
+ msg_->Write(&buf);
+ manager_->SignalSendPacket(buf.Data(), buf.Length(), this);
+
+ int delay = GetNextDelay();
+ manager_->thread_->PostDelayed(delay, this, MSG_STUN_SEND, NULL);
+}
+
+int StunRequest::GetNextDelay() {
+ int delay = DELAY_UNIT * talk_base::_min(1 << count_, DELAY_MAX_FACTOR);
+ count_ += 1;
+ if (count_ == MAX_SENDS)
+ timeout_ = true;
+ return delay;
+}
+
+} // namespace cricket