public SentRequest(DrpPeerEngine engine, Logger logger, IPEndPoint destinationEndpoint, ConnectionToNeighbor destinationNeighborNullable, byte[] requestUdpData,
RequestP2pSequenceNumber16 sentReqP2pSeq16, LowLevelUdpResponseScanner ack1Scanner)
{
_destinationEndpoint = destinationEndpoint;
_logger = logger;
_requestUdpData = requestUdpData;
_sentReqP2pSeq16 = sentReqP2pSeq16;
_ack1Scanner = ack1Scanner;
_destinationNeighborNullable = destinationNeighborNullable;
_engine = engine;
}
/// <param name="waitNhaFromNeighborNullable">is used to verify NPACK.NeighborHMAC</param>
internal async Task <NeighborPeerAckPacket> OptionallySendUdpRequestAsync_Retransmit_WaitForNeighborPeerAck(string completionActionVisibleId, byte[] requestPacketDataNullable, IPEndPoint responderEndpoint,
RequestP2pSequenceNumber16 reqP2pSeq16, ConnectionToNeighbor waitNhaFromNeighborNullable = null, Action <BinaryWriter> npaRequestFieldsForNeighborHmacNullable = null)
{
var npaScanner = NeighborPeerAckPacket.GetScanner(reqP2pSeq16, waitNhaFromNeighborNullable, npaRequestFieldsForNeighborHmacNullable);
if (WriteToLog_udp_deepDetail_enabled)
{
WriteToLog_udp_deepDetail($"waiting for NPACK, scanner: {MiscProcedures.ByteArrayToString(npaScanner.ResponseFirstBytes)} npaSeq={reqP2pSeq16}");
}
var nextHopResponsePacketData = await SendUdpRequestAsync_Retransmit(
new PendingLowLevelUdpRequest(completionActionVisibleId, responderEndpoint,
npaScanner,
DateTimeNowUtc, Configuration.UdpLowLevelRequests_ExpirationTimeoutS,
requestPacketDataNullable,
Configuration.UdpLowLevelRequests_InitialRetransmissionTimeoutS, Configuration.UdpLowLevelRequests_RetransmissionTimeoutIncrement
));
if (nextHopResponsePacketData == null)
{
string desc = "no NPACK response to DRP request '";
if (requestPacketDataNullable != null)
{
desc += (PacketTypes)requestPacketDataNullable[0];
}
desc += $"' - timeout expired ({Configuration.UdpLowLevelRequests_ExpirationTimeoutS}s) completionAction={completionActionVisibleId}";
if (waitNhaFromNeighborNullable != null)
{
desc += $", neighbor={waitNhaFromNeighborNullable}";
}
throw new DrpTimeoutException(desc);
}
var nextHopResponsePacket = new NeighborPeerAckPacket(nextHopResponsePacketData);
if (nextHopResponsePacket.ResponseCode != ResponseOrFailureCode.accepted)
{
if (WriteToLog_udp_deepDetail_enabled)
{
WriteToLog_udp_deepDetail($"got NPACK with {nextHopResponsePacket.ResponseCode} throwing exception");
}
throw new RequestRejectedException(nextHopResponsePacket.ResponseCode);
}
return(nextHopResponsePacket);
}
