ingoinglist.cs

破解的飞信源代码

namespace NCindy.Protocol.RUDP.Packet
{
    using System;
    using System.Collections.Generic;

    internal sealed class IngoingList
    {
        private int _biggestPacketId = -1;
        private int _currentPacketId = -1;
        private readonly LinkedList<RUDPIngoingPacket> _list = new LinkedList<RUDPIngoingPacket>();
        private readonly object _lock = new object();

        internal void AddPacket(RUDPIngoingPacket packet)
        {
            lock (this._lock)
            {
                this._biggestPacketId = Math.Max(this._biggestPacketId, packet.PacketId);
                if (packet.PacketId < 0)
                {
                    this._list.AddLast(packet);
                }
                else
                {
                    LinkedListNode<RUDPIngoingPacket> node = this._list.get_Last();
                    LinkedListNode<RUDPIngoingPacket> node2 = null;
                    while ((node != null) && ((node.get_Value().PacketId < 0) || (packet.PacketId < node.get_Value().PacketId)))
                    {
                        if ((node2 == null) && (node.get_Value().PacketId < 0))
                        {
                            node2 = node;
                        }
                        node = node.get_Previous();
                        if ((node != null) && (packet.PacketId < node.get_Value().PacketId))
                        {
                            node2 = null;
                        }
                    }
                    if (node2 != null)
                    {
                        this._list.AddAfter(node2, packet);
                    }
                    else if (node == null)
                    {
                        this._list.AddFirst(packet);
                    }
                    else if (packet.PacketId != node.get_Value().PacketId)
                    {
                        this._list.AddAfter(node, packet);
                    }
                }
            }
        }

        internal void Clear()
        {
            lock (this._lock)
            {
                this._list.Clear();
                this._currentPacketId = -1;
                this._biggestPacketId = -1;
            }
        }

        internal bool ContainsPacket(int packetId)
        {
            lock (this._lock)
            {
                LinkedListNode<RUDPIngoingPacket> node = this._list.get_First();
                while (node != null)
                {
                    if (node.get_Value().PacketId != packetId)
                    {
                        node = node.get_Next();
                    }
                    else
                    {
                        return true;
                    }
                }
            }
            return false;
        }

        internal RUDPIngoingPacket RemoveNextPacket()
        {
            lock (this._lock)
            {
                LinkedListNode<RUDPIngoingPacket> node = this._list.get_First();
                if (node == null)
                {
                    return null;
                }
                if ((node.get_Value().PacketId <= -1) || (node.get_Value().PacketId != (this._currentPacketId + 1)))
                {
                    goto Label_0090;
                }
                this._currentPacketId++;
                this._list.Remove(node);
                return node.get_Value();
            Label_0066:
                if (node.get_Value().PacketId < 0)
                {
                    this._list.Remove(node);
                    return node.get_Value();
                }
                node = node.get_Next();
            Label_0090:
                if (node != null)
                {
                    goto Label_0066;
                }
            }
            return null;
        }

        internal int BiggestPacketId
        {
            get
            {
                return this._biggestPacketId;
            }
        }

        internal int Count
        {
            get
            {
                return this._list.get_Count();
            }
        }

        internal int CurrentPacketId
        {
            get
            {
                return this._currentPacketId;
            }
            set
            {
                this._currentPacketId = value;
            }
        }
    }
}