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author | Rajith Muditha Attapattu <rajith@apache.org> | 2011-05-27 15:44:23 +0000 |
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committer | Rajith Muditha Attapattu <rajith@apache.org> | 2011-05-27 15:44:23 +0000 |
commit | 66765100f4257159622cefe57bed50125a5ad017 (patch) | |
tree | a88ee23bb194eb91f0ebb2d9b23ff423e3ea8e37 /qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs | |
parent | 1aeaa7b16e5ce54f10c901d75c4d40f9f88b9db6 (diff) | |
parent | 88b98b2f4152ef59a671fad55a0d08338b6b78ca (diff) | |
download | qpid-python-rajith_jms_client.tar.gz |
Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client
git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs')
-rw-r--r-- | qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs b/qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs new file mode 100644 index 0000000000..b62b11a3db --- /dev/null +++ b/qpid/dotnet/Qpid.Client.Transport.Socket.Blocking/BlockingSocketProcessor.cs @@ -0,0 +1,135 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ +using System; +using System.Net; +using System.Net.Sockets; +using log4net; +using Apache.Qpid.Buffer; +using Apache.Qpid.Client.Protocol; + +namespace Apache.Qpid.Client.Transport.Socket.Blocking +{ + class BlockingSocketProcessor : IConnectionCloser + { + private static readonly ILog _log = LogManager.GetLogger(typeof(BlockingSocketProcessor)); + + string _host; + int _port; + System.Net.Sockets.Socket _socket; + private NetworkStream _networkStream; + IByteChannel _byteChannel; + IProtocolListener _protocolListener; + + public BlockingSocketProcessor(string host, int port, IProtocolListener protocolListener) + { + _host = host; + _port = port; + _protocolListener = protocolListener; + _byteChannel = new ByteChannel(this); + } + + /// <summary> + /// Synchronous blocking connect. + /// </summary> + public void Connect() + { + _socket = new System.Net.Sockets.Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); + + /// For future note TCP Set NoDelay options may help, though with the blocking io not sure + /// The Don't linger may help with detecting disconnect but that hasn't been the case in testing. + /// _socket.SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.NoDelay, 0); + /// _socket.SetSocketOption (SocketOptionLevel.Socket, SocketOptionName.DontLinger, 0); + + IPHostEntry ipHostInfo = Dns.Resolve(_host); // Note: don't fix this warning. We do this for .NET 1.1 compatibility. + IPAddress ipAddress = ipHostInfo.AddressList[0]; + + IPEndPoint ipe = new IPEndPoint(ipAddress, _port); + + _socket.Connect(ipe); + _networkStream = new NetworkStream(_socket, true); + } + + public string getLocalEndPoint() + { + return _socket.LocalEndPoint.ToString(); + } + + public void Write(ByteBuffer byteBuffer) + { + try + { + _networkStream.Write(byteBuffer.array(), byteBuffer.position(), byteBuffer.limit()); // FIXME + } + catch (Exception e) + { + _log.Error("Write caused exception", e); + _protocolListener.OnException(e); + // We should provide the error synchronously as we are doing blocking io. + throw e; + } + } + + public ByteBuffer Read() + { + const int bufferSize = 4 * 1024; // TODO: Prevent constant allocation of buffers. + byte[] bytes = new byte[bufferSize]; + + int numOctets = _networkStream.Read(bytes, 0, bytes.Length); + + /// Read only returns 0 if the socket has been gracefully shutdown. + /// http://msdn2.microsoft.com/en-us/library/system.net.sockets.networkstream.read(VS.71).aspx + /// We can use this to block Send so the next Read will force an exception forcing failover. + /// Otherwise we need to wait ~20 seconds for the NetworkStream/Socket code to realise that + /// the socket has been closed. + if (numOctets == 0) + { + _socket.Shutdown(SocketShutdown.Send); + _socket.Close(); + } + + ByteBuffer byteBuffer = ByteBuffer.wrap(bytes); + byteBuffer.limit(numOctets); + + byteBuffer.flip(); + + return byteBuffer; + } + + public void Disconnect() + { + _networkStream.Flush(); + _networkStream.Close(); + _socket.Close(); + } + + public void Close() + { + Disconnect(); + } + + public IByteChannel ByteChannel + { + get { return _byteChannel; } + } + } +} + + |