| /* |
| * 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. |
| */ |
| |
| #ifndef TALK_P2P_CLIENT_SESSIONSENDTASK_H_ |
| #define TALK_P2P_CLIENT_SESSIONSENDTASK_H_ |
| |
| #include "talk/base/common.h" |
| #include "talk/xmpp/constants.h" |
| #include "talk/xmpp/xmppclient.h" |
| #include "talk/xmpp/xmppengine.h" |
| #include "talk/xmpp/xmpptask.h" |
| #include "talk/p2p/base/sessionmanager.h" |
| |
| namespace cricket { |
| |
| // The job of this task is to send an IQ stanza out (after stamping it with |
| // an ID attribute) and then wait for a response. If not response happens |
| // within 5 seconds, it will signal failure on a SessionManager. If an error |
| // happens it will also signal failure. If, however, the send succeeds this |
| // task will quietly go away. |
| |
| class SessionSendTask : public buzz::XmppTask { |
| public: |
| SessionSendTask(buzz::XmppTaskParentInterface* parent, |
| SessionManager* session_manager) |
| : buzz::XmppTask(parent, buzz::XmppEngine::HL_SINGLE), |
| session_manager_(session_manager) { |
| set_timeout_seconds(15); |
| session_manager_->SignalDestroyed.connect( |
| this, &SessionSendTask::OnSessionManagerDestroyed); |
| } |
| |
| virtual ~SessionSendTask() { |
| SignalDone(this); |
| } |
| |
| void Send(const buzz::XmlElement* stanza) { |
| ASSERT(stanza_.get() == NULL); |
| |
| // This should be an IQ of type set, result, or error. In the first case, |
| // we supply an ID. In the others, it should be present. |
| ASSERT(stanza->Name() == buzz::QN_IQ); |
| ASSERT(stanza->HasAttr(buzz::QN_TYPE)); |
| if (stanza->Attr(buzz::QN_TYPE) == "set") { |
| ASSERT(!stanza->HasAttr(buzz::QN_ID)); |
| } else { |
| ASSERT((stanza->Attr(buzz::QN_TYPE) == "result") || |
| (stanza->Attr(buzz::QN_TYPE) == "error")); |
| ASSERT(stanza->HasAttr(buzz::QN_ID)); |
| } |
| |
| stanza_.reset(new buzz::XmlElement(*stanza)); |
| if (stanza_->HasAttr(buzz::QN_ID)) { |
| set_task_id(stanza_->Attr(buzz::QN_ID)); |
| } else { |
| stanza_->SetAttr(buzz::QN_ID, task_id()); |
| } |
| } |
| |
| void OnSessionManagerDestroyed() { |
| // If the session manager doesn't exist anymore, we should still try to |
| // send the message, but avoid calling back into the SessionManager. |
| session_manager_ = NULL; |
| } |
| |
| sigslot::signal1<SessionSendTask *> SignalDone; |
| |
| protected: |
| virtual int OnTimeout() { |
| if (session_manager_ != NULL) { |
| session_manager_->OnFailedSend(stanza_.get(), NULL); |
| } |
| |
| return XmppTask::OnTimeout(); |
| } |
| |
| virtual int ProcessStart() { |
| SendStanza(stanza_.get()); |
| if (stanza_->Attr(buzz::QN_TYPE) == buzz::STR_SET) { |
| return STATE_RESPONSE; |
| } else { |
| return STATE_DONE; |
| } |
| } |
| |
| virtual int ProcessResponse() { |
| const buzz::XmlElement* next = NextStanza(); |
| if (next == NULL) |
| return STATE_BLOCKED; |
| |
| if (session_manager_ != NULL) { |
| if (next->Attr(buzz::QN_TYPE) == buzz::STR_RESULT) { |
| session_manager_->OnIncomingResponse(stanza_.get(), next); |
| } else { |
| session_manager_->OnFailedSend(stanza_.get(), next); |
| } |
| } |
| |
| return STATE_DONE; |
| } |
| |
| virtual bool HandleStanza(const buzz::XmlElement *stanza) { |
| if (!MatchResponseIq(stanza, |
| buzz::Jid(stanza_->Attr(buzz::QN_TO)), task_id())) |
| return false; |
| if (stanza->Attr(buzz::QN_TYPE) == buzz::STR_RESULT || |
| stanza->Attr(buzz::QN_TYPE) == buzz::STR_ERROR) { |
| QueueStanza(stanza); |
| return true; |
| } |
| return false; |
| } |
| |
| private: |
| SessionManager *session_manager_; |
| talk_base::scoped_ptr<buzz::XmlElement> stanza_; |
| }; |
| |
| } |
| |
| #endif // TALK_P2P_CLIENT_SESSIONSENDTASK_H_ |