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// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//  
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
using System.IO;
using SharpCifs.Util.Sharpen;

namespace SharpCifs.Netbios
{
    public class SessionRequestPacket : SessionServicePacket
    {
        private Name _calledName;

        private Name _callingName;

        public SessionRequestPacket()
        {
            _calledName = new Name();
            _callingName = new Name();
        }

        public SessionRequestPacket(Name calledName, Name callingName)
        {
            Type = SessionRequest;
            this._calledName = calledName;
            this._callingName = callingName;
        }

        internal override int WriteTrailerWireFormat(byte[] dst, int dstIndex)
        {
            int start = dstIndex;
            dstIndex += _calledName.WriteWireFormat(dst, dstIndex);
            dstIndex += _callingName.WriteWireFormat(dst, dstIndex);
            return dstIndex - start;
        }

        /// <exception cref="System.IO.IOException"></exception>
        internal override int ReadTrailerWireFormat(InputStream @in, byte[] buffer, int bufferIndex)
        {
            int start = bufferIndex;
            if (@in.Read(buffer, bufferIndex, Length) != Length)
            {
                throw new IOException("invalid session request wire format");
            }
            bufferIndex += _calledName.ReadWireFormat(buffer, bufferIndex);
            bufferIndex += _callingName.ReadWireFormat(buffer, bufferIndex);
            return bufferIndex - start;
        }
    }
}