/* ASYNC METHODS TO FIX
* public async Task<bool> ASYNC_send(Guid client_id, byte[] data) {
* try {
* TcpClient client;
* if(AcquireConnectedClient(client_id, out client)) {
* logger.Information("Invoked...");
* data=LZ4Compressor.Compress(data);
* data=FramingProtocol.WrapMessage(data);
* await client.GetStream().WriteAsync(data,0,data.Length).ConfigureAwait(false);
* logger.Information("... returned");
* return true;//return await Task.FromResult<bool>(true);
* } else {
* return false;//await Task.FromResult<bool>(false);
* }
* } catch(Exception e) {
* logger.Information("Exception occurred while sending data as byte[] stream: "+e.Message);
* logger.Information(e.StackTrace);
* return false;// await Task.FromResult<bool>(false);
* }
* }
* public async Task<bool> ASYNC_send_bytes(Guid client_id, byte[] data) {
* return await ASYNC_send(client_id, data);
* }
* public async Task<bool> ASYNC_send_integers(Guid client_id, int[] data) {
* byte[] bytes_data = ConvertArraysIntToByte(data);
* return await ASYNC_send(client_id, bytes_data);
* }
* public async Task<bool[]> ASYNC_sendToAll_bytes(byte[] data) {
* bool status = true;
* List<Task<bool>> tasks = new List<Task<bool>>();
* foreach(KeyValuePair<Guid,TcpClient> client in _clients) {
* Task<bool> task_sendclient = ASYNC_send_bytes(client.Key,data);
* status=(!(await task_sendclient) ? false : status);
* }
* return await Task.WhenAll(tasks.ToArray());
* }
*/
public bool Send(Guid client_id, byte[] data)
{
try {
TcpClient client;
if (AcquireConnectedClient(client_id, out client))
{
logger.Information("Data length to compress: " + data.Length + " bytes; compressing and wrapping...");
data = LZ4Compressor.Compress(data);
data = FramingProtocol.WrapMessage(data);
logger.Information("Data length after processing: " + data.Length + " bytes (Payload size=4 bytes). Writing on stream.");
client.GetStream().Write(data, 0, data.Length);
logger.Information(data.Length + " bytes wrote on stream!");
return(true);
}
else
{
return(false);
}
} catch (Exception e) {
if (e is IOException || e is InvalidOperationException || e is ObjectDisposedException)
{
logger.Information("Socket connection lost with client with guid: " + client_id + ". Client detached from server.");
DisconnectClient(client_id);
}
else
{
logger.Information("An error has occurred while sending data: " + e.Message + "\n");
logger.Information(e.StackTrace);
}
return(false);
}
}
private byte[] ProcessData(byte[] buffer, int bytes)
{
if (bytes > 0)
{
try {
logger.Information("It's time to process " + buffer.Length + " bytes. Trying decompressing...");
byte[] data = LZ4Compressor.Decompress(buffer);
logger.Information("LZ4 decompression done from " + buffer.Length + " bytes to: " + data.Length + " bytes.");
return(data);
}catch (ArgumentException) {
logger.Information("LZ4 decompression error, skipping frame!");
return(null);
}
}
else
{
return(null);
}
}