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* Copyright 2007, Google Inc.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// A libjingle compatible SocketServer for OSX/iOS/Cocoa.
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#if !defined(USE_COCOA_THREADING) || (!defined(OSX) && !defined(IOS))
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#error You can only include this file on OSX or IOS, and must also define
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#error USE_COCOA_THREADING.
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#import <Foundation/Foundation.h>
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#import "talk/base/messagequeue.h"
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#import "talk/base/socketserver.h"
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class MacCocoaSocketServer;
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// MacCocoaSocketServerHelper serves as a delegate to NSMachPort or a target for
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@interface MacCocoaSocketServerHelper : NSObject {
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// This is a weak reference. This works fine since the
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// talk_base::MacCocoaSocketServer owns this object.
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talk_base::MacCocoaSocketServer* socketServer; // weak.
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// The name "SocketServer" is misleading for this class. This class inherits
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// from SocketServer, some variants of which create/use physical
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// sockets (specifically, PhysicalSocketServer). A general explanation
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// (courtesy of bpm) is that SocketServer is responsible for allowing a thread
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// to go into an efficient wait state while it waits for a timer to expire or an
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// incoming message from MessageQueue. For GUI applications, the main thread
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// must continue to pump the main event loop during this wait state, hence the
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// need for specialized SocketServers to run on the main thread.
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// This particular socketServer however cannot handle a generalized wait state.
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// It can only handle Wait when called with cms == 0, or when cms > 0 and
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// process_io is false. In the former case, the process_io argument is ignored,
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// and in the latter case, the thread will sleep for cms milliSeconds.
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// Use this class in a Cocoa application that uses libjingle's Task and
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// MessageQueue, on the main thread. The typical usage is something like this:
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// talk_base::Thread* current = talk_base::Thread::Current();
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// MacCocoaSocketServer* ss =
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// new talk_base::MacCocoaSocketServer(current);
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// current->set_socketserver(ss);
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// // Now schedule some libjingle tasks, then call
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class MacCocoaSocketServer : public SocketServer {
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explicit MacCocoaSocketServer(MessageQueue* message_queue);
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virtual ~MacCocoaSocketServer();
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// SocketServer Interface. We don't create any synchronous sockets.
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virtual Socket* CreateSocket(int type) { return NULL; }
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virtual Socket* CreateSocket(int family, int type) { return NULL; }
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virtual AsyncSocket* CreateAsyncSocket(int type);
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virtual AsyncSocket* CreateAsyncSocket(int family, int type);
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virtual bool Wait(int cms, bool process_io);
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virtual void WakeUp();
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// message_queue_ is not owned by this object.
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// It is cached from the constructor argument.
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MessageQueue* message_queue_; // weak.
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MacCocoaSocketServerHelper* helper_;
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DISALLOW_EVIL_CONSTRUCTORS(MacCocoaSocketServer);
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} // namespace talk_base