// // Mono.ASPNET.ApplicationServer // // Authors: // Gonzalo Paniagua Javier (gonzalo@ximian.com) // // (C) Copyright 2004 Novell, Inc. (http://www.novell.com) // // Permission is hereby granted, free of charge, to any person obtaining // a copy of this software and associated documentation files (the // "Software"), to deal in the Software without restriction, including // without limitation the rights to use, copy, modify, merge, publish, // distribute, sublicense, and/or sell copies of the Software, and to // permit persons to whom the Software is furnished to do so, subject to // the following conditions: // // The above copyright notice and this permission notice shall be // included in all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. // using System; using System.Net.Sockets; namespace Mono.ASPNET { public class LingeringNetworkStream : NetworkStream { const int useconds_to_linger = 2000000; const int max_useconds_to_linger = 30000000; bool enableLingering = true; // We dont actually use the data from this buffer. So we cache it... static byte [] buffer; public LingeringNetworkStream (Socket sock, bool owns) : base (sock, owns) { } public bool EnableLingering { get { return enableLingering; } set { enableLingering = value; } } void LingeringClose () { int waited = 0; if (!Connected) return; Socket.Shutdown (SocketShutdown.Send); while (waited < max_useconds_to_linger) { int nread = 0; try { if (!Socket.Poll (useconds_to_linger, SelectMode.SelectRead)) break; if (buffer == null) buffer = new byte [512]; nread = Socket.Receive (buffer, 0, buffer.Length, 0); } catch { } if (nread == 0) break; waited += useconds_to_linger; } } public override void Close () { if (enableLingering) { try { LingeringClose (); } finally { base.Close (); } } else base.Close (); } public bool Connected { get { return Socket.Connected; } } } }