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Fixing variable packet sizes once and for all

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Sanae 2022-03-11 23:42:51 -06:00
parent 93143a80ef
commit 3b13e1f86d
1 changed files with 27 additions and 24 deletions
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33
Server/Server.cs
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@ -46,19 +46,20 @@ public class Server {
}
catch (OperationCanceledException) {
// ignore the exception, it's just for closing the server
}
Logger.Info("Server closing");
try {
serverSocket.Shutdown(SocketShutdown.Both);
}
finally {
} catch {
// ignored
} finally {
serverSocket.Close();
}
Logger.Info("Server closed");
}
}
public static void FillPacket<T>(PacketHeader header, T packet, Memory<byte> memory) where T : struct, IPacket {
Span<byte> data = memory.Span;
@ -117,9 +118,8 @@ public class Server {
while (true) {
memory = memoryPool.Rent(Constants.HeaderSize);
async Task<bool> Read(Memory<byte> readMem, int readSize = -1) {
int readOffset = 0;
if (readSize == -1) readSize = Constants.HeaderSize;
async Task<bool> Read(Memory<byte> readMem, int readSize, int readOffset) {
readSize += readOffset;
while (readOffset < readSize) {
int size = await socket.ReceiveAsync(readMem[readOffset..readSize], SocketFlags.None);
if (size == 0) {
@ -135,20 +135,21 @@ public class Server {
return true;
}
if (!await Read(memory.Memory[..Constants.HeaderSize]))
if (!await Read(memory.Memory[..Constants.HeaderSize], Constants.HeaderSize, 0))
throw new Exception("Not enough bytes for packet header sent to server");
PacketHeader header = GetHeader(memory.Memory.Span[..Constants.HeaderSize]);
{
IMemoryOwner<byte> memTemp = memory;
Range packetRange = Constants.HeaderSize..(Constants.HeaderSize + header.PacketSize);
if (header.PacketSize > 0) {
IMemoryOwner<byte> memTemp = memory; // header to copy to new memory
memory = memoryPool.Rent(Constants.HeaderSize + header.PacketSize);
memTemp.Memory[..Constants.HeaderSize].CopyTo(memory.Memory[..Constants.HeaderSize]);
memTemp.Memory.Span[..Constants.HeaderSize].CopyTo(memory.Memory.Span[..Constants.HeaderSize]);
memTemp.Dispose();
}
if (header.PacketSize > 0
&& !await Read(memory.Memory[Constants.HeaderSize..(Constants.HeaderSize + header.PacketSize)], header.PacketSize))
Logger.Info("smth");
if (!await Read(memory.Memory, header.PacketSize, Constants.HeaderSize))
throw new Exception("Not enough bytes for packet data sent to server");
}
Logger.Info($"Got your mom {header.Type}");
Logger.Info($"Got your mom {header.Id} {header.Type} 0x{header.PacketSize:X} 0x{memory.Memory.Length:X} 0x{header.Size:X}");
// connection initialization
if (first) {
@ -156,7 +157,7 @@ public class Server {
if (header.Type != PacketType.Connect) throw new Exception($"First packet was not init, instead it was {header.Type}");
ConnectPacket connect = new ConnectPacket();
connect.Deserialize(memory.Memory.Span[Constants.HeaderSize..(Constants.HeaderSize + header.PacketSize)]);
connect.Deserialize(memory.Memory.Span[packetRange]);
lock (Clients) {
client.Name = connect.ClientName;
bool firstConn = false;
@ -266,7 +267,9 @@ public class Server {
Logger.Info($"Client {socket.RemoteEndPoint} ({client.Name}/{client.Id}) disconnected from the server");
Clients.Remove(client);
try {
client.Dispose();
} catch {/*lol*/}
Task.Run(() => Broadcast(new DisconnectPacket(), client));
}