public Packet(uint address, RadioPacketType type, int sequence, Bytes body)
{
this.address = address;
this.type = type;
this.sequence = sequence % 32;
this.body = body;
}
private async Task <Packet> ExchangePackets(Packet packet_to_send, RadioPacketType expected_type, int timeout = 10000)
{
int start_time = 0;
bool first = true;
Bytes received = null;
this.PacketLogger.Log($"SEND PKT {packet_to_send}");
while (start_time == 0 || Environment.TickCount - start_time < timeout)
{
if (first)
{
first = false;
}
else
{
this.repeated_sends += 1;
}
if (this.last_packet_timestamp == 0 || (Environment.TickCount - this.last_packet_timestamp) > 2000)
{
received = await this.PacketRadio.SendAndGetPacket(packet_to_send.get_data(), 0, 0, 300, 1, 300);
}
else
{
received = await this.PacketRadio.SendAndGetPacket(packet_to_send.get_data(), 0, 0, 120, 0, 40);
}
if (start_time == 0)
{
start_time = Environment.TickCount;
}
this.PacketLogger.Log($"SEND PKT {packet_to_send}");
if (received == null)
{
this.receive_timeouts++;
this.PacketLogger.Log("RECV PKT None");
this.PacketRadio.TxLevelUp();
continue;
}
var p = this.GetPacket(received);
if (p == null)
{
this.bad_packets++;
this.PacketRadio.TxLevelDown();
continue;
}
this.PacketLogger.Log($"RECV PKT {p}");
if (p.address != this.Pod.radio_address)
{
this.bad_packets++;
this.PacketLogger.Log("RECV PKT ADDR MISMATCH");
this.PacketRadio.TxLevelDown();
continue;
}
this.last_packet_timestamp = Environment.TickCount;
if (this.last_received_packet != null && p.sequence == this.last_received_packet.sequence &&
p.type == this.last_received_packet.type)
{
this.repeated_receives++;
this.PacketLogger.Log("RECV PKT previous");
this.PacketRadio.TxLevelUp();
continue;
}
this.last_received_packet = p;
this.Pod.radio_packet_sequence = (p.sequence + 1) % 32;
if (p.type != expected_type)
{
this.PacketLogger.Log("RECV PKT unexpected type");
this.protocol_errors++;
throw new ProtocolException("Unexpected packet type received", p);
}
if (p.sequence != (packet_to_send.sequence + 1) % 32)
{
this.Pod.radio_packet_sequence = (p.sequence + 1) % 32;
this.PacketLogger.Log("RECV PKT unexpected sequence");
this.last_received_packet = p;
this.protocol_errors++;
throw new ProtocolException("Incorrect packet sequence received", p);
}
return(p);
}
throw new OmnipyTimeoutException("Exceeded timeout while send and receive");
}
