/// <summary>
/// Sends a command to the RCON server
/// </summary>
/// <returns>A task with the response packet</returns>
public async Task <RCONPacket> SendCommandAsync(string command, RCONPacketType type = RCONPacketType.ExecCommand)
{
RCONPacket packet = new RCONPacket(GenerateID(), type, command);
var task = new TaskCompletionSource <RCONPacket>();
pendingPackets.Add(packet.Id, task);
await this.socket.SendAsync(packet.ToBytes(), SocketFlags.None);
return(await task.Task);
}
/// <summary>
/// Converts a buffer to a packet.
/// </summary>
/// <param name="buffer">Buffer to read.</param>
/// <returns>Created packet.</returns>
internal static RCONPacket FromBytes(byte[] buffer)
{
if (buffer == null)
{
throw new NullReferenceException("Byte buffer cannot be null.");
}
if (buffer.Length < 4)
{
throw new InvalidDataException("Buffer does not contain a size field.");
}
if (buffer.Length > MAX_PACKET_SIZE)
{
throw new InvalidDataException("Buffer is too large for an RCON packet.");
}
int size = BitConverter.ToInt32(buffer, 0);
if (size > buffer.Length - 4)
{
throw new InvalidDataException("Packet size specified was larger then buffer");
}
if (size < 10)
{
throw new InvalidDataException("Packet received was invalid.");
}
int id = BitConverter.ToInt32(buffer, 4);
RCONPacketType type = (RCONPacketType)BitConverter.ToInt32(buffer, 8);
try {
// Force string to \r\n line endings
char[] rawBody = Encoding.UTF8.GetChars(buffer, 12, size - 10);
string body = new string(rawBody, 0, size - 10).TrimEnd();
body = Regex.Replace(body, @"\r\n|\n\r|\n|\r", "\r\n");
return(new RCONPacket(id, type, body));
} catch (Exception ex) {
Console.Error.WriteLine($"{DateTime.Now} - Error reading RCON packet from server: " + ex.Message);
return(new RCONPacket(id, type, ""));
}
}
public static RCONPacket ReadData(byte[] data)
{
// Skip length header (4 bytes)
data = data.Skip(4).ToArray();
// Grab packet ID (4 bytes)
int packetID = BitConverter.ToInt32(data.Take(4).ToArray(), 0);
data = data.Skip(4).ToArray();
// Grab packet type (4 bytes)
RCONPacketType packetType = (RCONPacketType)BitConverter.ToInt32(data.Take(4).ToArray(), 0);
data = data.Skip(4).ToArray();
// Get body, remove last two bytes (string terminator)
data = data.Take(data.Length - 2).ToArray();
string packetBody = Encoding.UTF8.GetString(data);
if (packetType == RCONPacketType.AUTH_RESPONSE)
{
return(new RCONAuthResponsePacket()
{
ID = packetID,
Type = packetType,
Body = packetBody
});
}
return(new RCONPacket()
{
ID = packetID,
Type = packetType,
Body = packetBody
});
}
/// <summary>
/// Create a new packet.
/// </summary>
/// <param name="id">Some kind of identifier to keep track of responses from the server.</param>
/// <param name="type">What the server is supposed to do with the body of this packet.</param>
/// <param name="body">The actual information held within.</param>
public RCONPacket(int id, RCONPacketType type, string body)
{
this.Id = id;
this.Type = type;
this.Body = body;
}