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Id
3119257
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0
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0
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CreationDate
2010-06-25T15:27:05.487
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2010-06-25T15:27:05.487
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3046
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3118289
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2
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2
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0
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text
Body
<p>Ok, so this is perhaps "cheating", but I suppose you could re-purpose my non-Rx answer and wrap it with <code>Observable.Create</code>. </p> <p>I'm fairly sure that returning the socket as the <code>IDisposable</code> is the wrong semantics, but not sure what would be.</p> <pre><code> static IObservable<string> GetMessages(Socket socket, IPAddress addr, int port) { return Observable.CreateWithDisposable<string>( o => { byte[] buffer = new byte[1024]; Action<int, Action<int>> readIntoBuffer = (length, callback) => { var totalRead = 0; AsyncCallback receiveCallback = null; AsyncCallback temp = r => { var read = socket.EndReceive(r); if (read == 0) { socket.Close(); o.OnCompleted(); return; } totalRead += read; if (totalRead < length) { socket.BeginReceive(buffer, totalRead, length - totalRead, SocketFlags.None, receiveCallback, null); } else { callback(length); } }; receiveCallback = temp; socket.BeginReceive(buffer, totalRead, length, SocketFlags.None, receiveCallback, null); }; Action<int> sizeRead = null; Action<int> messageRead = x => { var message = Encoding.UTF8.GetString(buffer, 0, x); o.OnNext(message); readIntoBuffer(4, sizeRead); }; Action<int> temp2 = x => { var size = BitConverter.ToInt32(buffer, 0); readIntoBuffer(size, messageRead); }; sizeRead = temp2; AsyncCallback connectCallback = r => { socket.EndConnect(r); readIntoBuffer(4, sizeRead); }; socket.BeginConnect(addr, port, connectCallback, null); return socket; }); } </code></pre>
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1. POUsing Reactive Extensions (Rx) for socket programming practical?
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1. PTAnswer
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1. USJoseph Kingry
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