static SendMessageResult SendCommand(InsteonBridgeStream stream, CommandMessage msg, int timeout, out byte[] data)
{
SendMessageResult r = WriteMessage(stream, msg.GetBytes, timeout);
if (r != OK)
{
data = null;
return(r);
}
return(ReadResponse(stream, msg.GetResponseHeaderBytes, timeout, CommandResponse.Length, out data));
}
static SendMessageResult ReadResponseHeader(InsteonBridgeStream stream, byte[] bytes, int timeout)
{
byte[] rx = stream.ReadBytes(bytes.Length, timeout);
if (rx?.Length == 0)
{
return(ResponseNull);
}
if (rx[0] == Message.NAK)
{
return(ResponseNak);
}
if (!Enumerable.SequenceEqual(bytes, rx))
{
return(ResponseInvalid);
}
return(OK);
}
static R SendCommand <R>(InsteonBridgeStream stream, CommandMessage msg, InsteonControllerOptions opt) where R : CommandResponse, new()
{
int delay = opt.RetryStartDelayMs;
int timeout = opt.TimeoutStartMs;
int retry = 0;
SendMessageResult r = OK;
while (retry++ < opt.MaxRetries)
{
if ((r = SendCommand(stream, msg, timeout, out byte[] data)) == OK)
{
return(msg.CreateResponse <R>(data));
}
Thread.Sleep(delay);
timeout += opt.TimeoutStepMs;
delay += opt.RetryStepMs;
}
return(msg.CreateResponse <R>(r));
}
static SendMessageResult WriteMessage(InsteonBridgeStream stream, byte[] msg, int timeout)
{
if (!stream.DiscardExisting() || !stream.WriteBytes(msg))
{
return(WriteException);
}
SendMessageResult r = ReadResponse(stream, msg, timeout, 1, out byte[] ack);
if (r != OK)
{
return(r);
}
if (ack?[0] != Message.ACK)
{
return(EchoInvalid);
}
return(OK);
}
static SendMessageResult ReadResponse(InsteonBridgeStream stream, byte[] msg, int timeout, int responseLen, out byte[] response)
{
SendMessageResult r = ReadResponseHeader(stream, msg, timeout);
if (r != OK)
{
response = null;
return(r);
}
response = stream.ReadBytes(responseLen, timeout);
if (response == null)
{
return(ResponseNull);
}
if (response.Length < responseLen)
{
return(ResponseInvalid);
}
return(OK);
}
public InsteonController(InsteonBridgeStream stream, InsteonId?address = null, string name = null)
: base(address?.Value ?? InsteonId.Zero, null, name)
{
Stream = stream;
}