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// Copyright 2014 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_HOST_HOST_EXTENSION_H_
#define REMOTING_HOST_HOST_EXTENSION_H_
#include <string>
#include "base/memory/scoped_ptr.h"
namespace remoting {
class ClientSessionControl;
class HostExtensionSession;
namespace protocol {
class ClientStub;
}
// Extends |ChromotingHost| with new functionality, and can use extension
// messages to communicate with the client.
class HostExtension {
public:
virtual ~HostExtension() {}
// Returns the name of the capability for this extension. This is merged into
// the capabilities the host reports to the client, to determine whether a
// HostExtensionSession should be created for a particular session.
// Returning an empty string indicates that the extension is not associated
// with a capability.
virtual std::string capability() const = 0;
// Creates an extension session, which can handle extension messages for a
// client session.
// |client_session_control| may be used to e.g. disconnect the session.
// |client_stub| may be used to send messages to the session.
// Both interfaces are valid for the lifetime of the |HostExtensionSession|.
virtual scoped_ptr<HostExtensionSession> CreateExtensionSession(
ClientSessionControl* client_session_control,
protocol::ClientStub* client_stub) = 0;
};
} // namespace remoting
#endif // REMOTING_HOST_HOST_EXTENSION_H_
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