From b5a9b904dc198b64bcf2ab785a2c9386492a9dd4 Mon Sep 17 00:00:00 2001 From: Melanie Thielker Date: Fri, 8 Aug 2008 12:19:11 +0000 Subject: Sorry, thoughtI had added that :/ Missing file from pervious commit --- OpenSim/Framework/ProxyCodec.cs | 77 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 OpenSim/Framework/ProxyCodec.cs (limited to 'OpenSim') diff --git a/OpenSim/Framework/ProxyCodec.cs b/OpenSim/Framework/ProxyCodec.cs new file mode 100644 index 0000000..cdba93d --- /dev/null +++ b/OpenSim/Framework/ProxyCodec.cs @@ -0,0 +1,77 @@ +/* + * Copyright (c) Contributors, http://opensimulator.org/ + * See CONTRIBUTORS.TXT for a full list of copyright holders. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the OpenSim Project nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +using System; +using System.Collections; +using System.Net; +using libsecondlife; +using libsecondlife.Packets; + +namespace OpenSim.Framework +{ + public sealed class ProxyCodec + { + public static void EncodeProxyMessage(byte[] bytes, ref int numBytes, EndPoint trueEP) + { + if (numBytes > 4090) // max UPD size = 4096 + { + throw new Exception("ERROR: No space to encode the proxy EP"); + } + + ushort port = (ushort) ((IPEndPoint) trueEP).Port; + bytes[numBytes++] = (byte) (port % 256); + bytes[numBytes++] = (byte) (port / 256); + + foreach (byte b in ((IPEndPoint) trueEP).Address.GetAddressBytes()) + { + bytes[numBytes++] = b; + } + + int x = numBytes; + + DecodeProxyMessage(bytes, ref numBytes); + + numBytes = x; + } + + public static EndPoint DecodeProxyMessage(byte[] bytes, ref int numBytes) + { + // IPv4 Only + byte[] addr = new byte[4]; + + addr[3] = bytes[--numBytes]; + addr[2] = bytes[--numBytes]; + addr[1] = bytes[--numBytes]; + addr[0] = bytes[--numBytes]; + + ushort port = (ushort) (bytes[--numBytes] * 256); + port += (ushort) bytes[--numBytes]; + + return (EndPoint) new IPEndPoint(new IPAddress(addr), (int) port); + } + } +} -- cgit v1.1