public static async Task <Packet> ReadFromStreamAsync(MinecraftStream stream)
{
int length = await stream.ReadVarIntAsync();
byte[] receivedData = new byte[length];
await stream.ReadAsync(receivedData, 0, length);
int packetId = 0;
byte[] packetData = new byte[0];
using (var packetStream = new MinecraftStream(receivedData))
{
try
{
packetId = await packetStream.ReadVarIntAsync();
int arlen = 0;
if (length - packetId.GetVarintLength() > -1)
{
arlen = length - packetId.GetVarintLength();
}
packetData = new byte[arlen];
await packetStream.ReadAsync(packetData, 0, packetData.Length);
}
catch
{
throw;
}
}
return(new EmptyPacket(packetId, packetData));
}
private async Task <(int id, byte[] data)> GetNextPacketAsync()
{
int length = await this.minecraftStream.ReadVarIntAsync();
byte[] receivedData = new byte[length];
await this.minecraftStream.ReadAsync(receivedData, 0, length);
int packetId = 0;
byte[] packetData = Array.Empty <byte>();
using (var packetStream = new MinecraftStream(receivedData))
{
try
{
packetId = await packetStream.ReadVarIntAsync();
int arlen = 0;
if (length - packetId.GetVarIntLength() > -1)
{
arlen = length - packetId.GetVarIntLength();
}
packetData = new byte[arlen];
await packetStream.ReadAsync(packetData, 0, packetData.Length);
}
catch
{
throw;
}
}
return(packetId, packetData);
}
public static async Task <T> DeserializeAsync <T>(byte[] data) where T : Packet
{
await using var stream = new MinecraftStream(data);
var packet = (T)Activator.CreateInstance(typeof(T));//TODO make sure all packets have default constructors
if (packet == null)
{
throw new NullReferenceException(nameof(packet));
}
//Program.PacketLogger.LogDebug($"Deserializing {packet}");
var valueDict = packet.GetAllMemberNames().OrderBy(x => x.Key.Order);
var members = packet.GetType().GetMembers(PacketExtensions.Flags);
int readableBytes = 0;
foreach (var(key, value) in valueDict)
{
var member = members.FirstOrDefault(x => x.Name.EqualsIgnoreCase(value));
if (member is FieldInfo field)
{
var dataType = key.Type;
if (dataType == DataType.Auto)
{
dataType = field.FieldType.ToDataType();
}
var val = await stream.ReadAsync(field.FieldType, dataType, key);
//Program.PacketLogger.LogDebug($"Setting val {val}");
field.SetValue(packet, val);
}
else if (member is PropertyInfo property)
{
var dataType = key.Type;
if (dataType == DataType.Auto)
{
dataType = property.PropertyType.ToDataType();
}
var val = await stream.ReadAsync(property.PropertyType, dataType, key, readableBytes);
//Program.PacketLogger.LogDebug($"Setting val {val}");
if (property.PropertyType.IsEnum && property.PropertyType == typeof(BlockFace))
{
val = (BlockFace)val;
}
property.SetValue(packet, val);
}
readableBytes = data.Length - (int)stream.Position;
}
return(packet);
}