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// 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.
#ifndef REMOTING_JINGLE_GLUE_IQ_SENDER_H_
#define REMOTING_JINGLE_GLUE_IQ_SENDER_H_
#include <map>
#include <string>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/memory/scoped_ptr.h"
#include "remoting/jingle_glue/signal_strategy.h"
namespace buzz {
class XmlElement;
} // namespace buzz
namespace remoting {
class IqRequest;
class SignalStrategy;
// IqSender handles sending iq requests and routing of responses to
// those requests.
class IqSender : public SignalStrategy::Listener {
public:
typedef base::Callback<void(const buzz::XmlElement*)> ReplyCallback;
explicit IqSender(SignalStrategy* signal_strategy);
virtual ~IqSender();
// Send an iq stanza. Returns an IqRequest object that represends
// the request. |callback| is called when response to |stanza| is
// received. Destroy the returned IqRequest to cancel the callback.
// Takes ownership of |stanza|. Caller must take ownership of the
// result. Result must be destroyed before sender is destroyed.
IqRequest* SendIq(buzz::XmlElement* stanza,
const ReplyCallback& callback) WARN_UNUSED_RESULT;
// Same as above, but also formats the message. Takes ownership of
// |iq_body|.
IqRequest* SendIq(const std::string& type,
const std::string& addressee,
buzz::XmlElement* iq_body,
const ReplyCallback& callback) WARN_UNUSED_RESULT;
// SignalStrategy::Listener implementation.
virtual bool OnIncomingStanza(const buzz::XmlElement* stanza) OVERRIDE;
private:
typedef std::map<std::string, IqRequest*> IqRequestMap;
friend class IqRequest;
// Helper function used to create iq stanzas.
static buzz::XmlElement* MakeIqStanza(const std::string& type,
const std::string& addressee,
buzz::XmlElement* iq_body);
// Removes |request| from the list of pending requests. Called by IqRequest.
void RemoveRequest(IqRequest* request);
SignalStrategy* signal_strategy_;
IqRequestMap requests_;
DISALLOW_COPY_AND_ASSIGN(IqSender);
};
// This call must only be used on the thread it was created on.
class IqRequest {
public:
IqRequest(IqSender* sender, const IqSender::ReplyCallback& callback);
~IqRequest();
private:
friend class IqSender;
// Called by IqSender when a response is received.
void OnResponse(const buzz::XmlElement* stanza);
IqSender* sender_;
IqSender::ReplyCallback callback_;
DISALLOW_COPY_AND_ASSIGN(IqRequest);
};
} // namespace remoting
#endif // REMOTING_JINGLE_GLUE_IQ_SENDER_H_
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