69 lines
3.1 KiB
C#
69 lines
3.1 KiB
C#
using System.Collections.Generic;
|
|
using System;
|
|
|
|
using NeonTea.Quakeball.TeaNet.Peers;
|
|
|
|
|
|
namespace NeonTea.Quakeball.TeaNet.Packets {
|
|
/// <summary>Manages a single form of conversation between clients for the Peer. Don't forget to register your packets with <see cref="Protocol.RegisterPacket(Type)"/></summary>
|
|
public abstract class Protocol {
|
|
private Dictionary<Type, int> PacketToId = new Dictionary<Type, int>();
|
|
private Dictionary<int, Type> IdToPacket = new Dictionary<int, Type>();
|
|
private int PacketIdCounter;
|
|
|
|
/// <summary>Refers to the peer it is registered to</summary>
|
|
public Peer Peer;
|
|
|
|
/// <summary>Unique identifier for the protocol. This should be different for every protocol.</summary>
|
|
public abstract byte Identifier { get; }
|
|
/// <summary>Version of the protocol, should be changed if existing packets are changed, new packets are registered or old packets are removed.</summary>
|
|
public abstract string Version { get; }
|
|
|
|
/// <summary>Called when the Peer receives a packet from a connection that uses this protocol</summary>
|
|
public abstract void Receive(Connection conn, Packet packet);
|
|
/// <summary>Called when a ConnectionStatus is changed for a connection that uses this protocol</summary>
|
|
public abstract void ConnectionStatusChanged(ConnectionStatus oldStatus, ConnectionStatus newStatus, Connection conn);
|
|
/// <summary>Called when a connection that uses this protocol is timed out suddenly.</summary>
|
|
public abstract void Timeout(Connection conn);
|
|
|
|
/// <summary>Register a packet for sending and receiving.</summary>
|
|
public int RegisterPacket(Type t) {
|
|
if (t.BaseType != typeof(Packet) || PacketToId.ContainsKey(t)) {
|
|
return -1;
|
|
}
|
|
int id = PacketIdCounter++;
|
|
PacketToId.Add(t, id);
|
|
IdToPacket.Add(id, t);
|
|
return id;
|
|
}
|
|
|
|
public ByteBuffer BuildMessage(Connection connection) {
|
|
ByteBuffer buffer = new ByteBuffer();
|
|
foreach (byte b in Peer.Fingerprint) {
|
|
buffer.Write(b);
|
|
}
|
|
buffer.Write(Identifier);
|
|
if (connection.Status == ConnectionStatus.Establishing) {
|
|
buffer.Write((byte)PacketStage.Establishing);
|
|
buffer.Write(Version);
|
|
} else if (connection.Status == ConnectionStatus.Closed) {
|
|
buffer.Write((byte)PacketStage.Closed);
|
|
} else if (connection.Status == ConnectionStatus.Rejected) {
|
|
buffer.Write((byte)PacketStage.Rejected);
|
|
buffer.Write((byte)connection.ClosingReason);
|
|
} else if (connection.Status == ConnectionStatus.Ready) {
|
|
buffer.Write((byte)PacketStage.Ready);
|
|
buffer.Write(connection.Internal.LatestInwardReliable);
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
public int GetPacketTypeID(Packet packet) {
|
|
return PacketToId[packet.GetType()];
|
|
}
|
|
|
|
public Type GetPacketType(int id) {
|
|
return IdToPacket[id];
|
|
}
|
|
}
|
|
} |