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;
}
public PendingLowLevelUdpRequest(string completionActionVisibleId, IPEndPoint responderEndpoint, LowLevelUdpResponseScanner responseScanner, DateTime timeUtc,
double expirationTimeoutS,
byte[] requestPacketDataNullable = null, double?initialRetransmissionTimeoutS = null, double?retransmissionTimeoutIncrement = null)
{
CompletionActionVisibleId = completionActionVisibleId;
_retransmissionTimeoutIncrement = retransmissionTimeoutIncrement;
ExpirationTimeUTC = timeUtc.AddSeconds(expirationTimeoutS);
_currentRetransmissionTimeoutS = initialRetransmissionTimeoutS;
if (_currentRetransmissionTimeoutS.HasValue)
{
NextRetransmissionTimeUTC = timeUtc.AddSeconds(_currentRetransmissionTimeoutS.Value);
}
ResponderEndpoint = responderEndpoint;
ResponseScanner = responseScanner;
RequestPacketDataNullable = requestPacketDataNullable;
_expirationTimeoutS = expirationTimeoutS;
}
internal async Task <byte[]> OptionallySendUdpRequestAsync_Retransmit_WaitForResponse(string completionActionVisibleId, string responderVisibleDescription, byte[] requestPacketDataNullable,
IPEndPoint responderEndpoint, LowLevelUdpResponseScanner responseScanner, double?expirationTimeoutS = null)
{
var timeoutS = expirationTimeoutS ?? Configuration.UdpLowLevelRequests_ExpirationTimeoutS;
var pendingLowLevelUdpRequest = new PendingLowLevelUdpRequest(completionActionVisibleId, responderEndpoint,
responseScanner, DateTimeNowUtc, timeoutS,
requestPacketDataNullable,
Configuration.UdpLowLevelRequests_InitialRetransmissionTimeoutS, Configuration.UdpLowLevelRequests_RetransmissionTimeoutIncrement
);
var nextHopResponsePacketData = await SendUdpRequestAsync_Retransmit(pendingLowLevelUdpRequest);
if (nextHopResponsePacketData == null)
{
string desc = $"no response to DRP request from '{responderVisibleDescription}' '";
if (requestPacketDataNullable != null)
{
desc += (PacketTypes)requestPacketDataNullable[0];
}
desc += $"' - timeout expired ({timeoutS}s) completionAction={completionActionVisibleId}";
throw new DrpTimeoutException(desc);
}
return(nextHopResponsePacketData);
}