protected override void OnReceive(StreamBlock block)
{
// agregarmos al buffer.
STrace.Debug(GetType().FullName, deviceId, String.Format("FileServer: bloque de datos={0}", block.TotalBytes));
Array.Copy(block.Data, 0, active_buffer, buffer_position, block.TotalBytes);
buffer_position += block.TotalBytes;
if (!headers_readed)
{
if (buffer_position >= 71)
{
// leer la cabecera... podemos
// Short IdDispositivo
// Byte Destino (0x00 = File, 0x01 = Queue)
// Integer Tamaño del Archivo (setea $FileSize)
// Bytes[64] Nombre de Archivo o Base64MessageQueue segun corresponda (Rellenado con 0)
// Bytes[$FileSize] Datos del archivo.
var pos = 0;
deviceId = UrbetrackCodec.DecodeShort(active_buffer, ref pos);
op = UrbetrackCodec.DecodeByte(active_buffer, ref pos);
chunk_size = UrbetrackCodec.DecodeInteger(active_buffer, ref pos);
label = UrbetrackCodec.DecodeBytesAsString(active_buffer, ref pos, 64);
headers_readed = true;
strm = new MemoryStream();
STrace.Debug(GetType().FullName, deviceId, String.Format("Iniciando Recepcion: queue={0} size={1}", label, chunk_size));
}
else
{
return; // aun no leimos suficiente.
}
}
while (buffer_position > payload_start)
{
STrace.Debug(GetType().FullName, deviceId, String.Format("Recibiendo bloque: size={0}", buffer_position - payload_start));
var data_block = new byte[buffer_position - payload_start];
Array.Copy(active_buffer, payload_start, data_block, 0, buffer_position - payload_start);
strm.Write(data_block, 0, buffer_position - payload_start);
buffer_position = payload_start = 0;
if (strm.Length != chunk_size)
{
continue;
}
bool local_result;
try
{
local_result = MessageReceived(deviceId, op, label, strm, true);
}
catch (Exception e)
{
STrace.Exception(GetType().FullName, e);
local_result = false;
}
Send(Encoding.ASCII.GetBytes(local_result ? "A" : "N"), 1, deviceId, "MemoryStream");
STrace.Debug(GetType().FullName, deviceId, String.Format("Respondo {0} y cierro.", local_result ? "A" : "N"));
Disconnect();
}
}
