private void ProcessIncomingRequest(HL7Request response)
{
HL7Request req = null;
var v = m_OutgoingRequests.Where((request, b) =>
{
if (response.Request.IsResponseForRequest(request.Request))
{
request.Response = response.Request;
return(true);
}
else
{
return(false);
}
}).ToList();
if (v.Count() == 0)
{
m_HL7Server.Logger.Error("Unexpected response received");
}
else
{
req = v.FirstOrDefault();
req.ResponseReceivedEvent.Set();
}
}
/// <summary>
///
/// </summary>
/// <param name="ack"></param>
/// <returns></returns>
private void ProcessIncomingAck(IHL7Message ack)
{
HL7Request req = null;
var v = m_OutgoingRequests.Where((request, b) =>
{
if (ack.IsAckForRequest(request.Request) && request.Acknowledgment == null)
{
request.Acknowledgment = ack as IHL7Message;
return(true);
}
else
{
return(false);
}
}).ToList();
if (v.Count() == 0)
{
string log = "Unexpected ack received or ack received to late";
m_HL7Server.Logger.Error(log);
}
else if (v.Count() > 1)
{
string log = "each ack should be bount to a single request";
throw new HL7InterfaceException(log);
}
else
{
req = v.FirstOrDefault();
req.AckReceivedEvent.Set();
}
}
private bool SendMessageOne(HL7Request hl7Request, ref int responseRetries)
{
hl7Request.RequestCancellationToken.Token.ThrowIfCancellationRequested();
int ackRetries = m_HL7Protocol.Config.MaxAckRetriesNumber;
m_HL7Server.Logger.Info("Entering");
lock (m_AckReceivedLock)
{
m_HL7Server.Logger.Info("Critical Area");
while (!SendAndWaitForAck(hl7Request, ref ackRetries))
{
;
}
}
m_HL7Server.Logger.Info("Exit");
if (!Protocol.Config.IsResponseRequired)
{
return(true);
}
if (!hl7Request.ResponseReceivedEvent.Wait(Protocol.Config.ResponseTimeout, hl7Request.RequestCancellationToken.Token))
{
if (responseRetries-- > 0)
{
return(false);;
}
else
{
throw new HL7InterfaceException($"The message was not acknowledged after a total number of {ackRetries} retries");
}
}
return(true);
}
private bool SendAndWaitForAck(HL7Request hl7Request, ref int ackRetries)
{
m_HL7Server.Logger.Info($"Sending {hl7Request.Request.ControlID}");
GlobalWatch.Restart();
m_EasyClient.Send(Encoding.ASCII.GetBytes(MLLP.CreateMLLPMessage(hl7Request.Request.Encode())));
m_HL7Server.Logger.Info($"Sent {hl7Request.Request.ControlID}");
string logMessage = string.Empty;
logMessage = $"{hl7Request.Request.MessageID} sent (Ack RETRY) [{m_HL7Protocol.Config.MaxAckRetriesNumber}, {ackRetries}]";
if (!Protocol.Config.IsAckRequired)
{
return(true);
}
if (!m_OutgoingRequests.Contains(hl7Request))
{
throw new OperationCanceledException("");
}
if (hl7Request.RequestCancellationToken.Token.IsCancellationRequested)
{
throw new OperationCanceledException(hl7Request.RequestCancellationToken.Token);
}
hl7Request.RequestCancellationToken.Token.ThrowIfCancellationRequested();
m_HL7Server.Logger.Info($"Waiting for ack {hl7Request.Request.ControlID}");
if (!hl7Request.AckReceivedEvent.Wait(Protocol.Config.AckTimeout, hl7Request.RequestCancellationToken.Token))
{
m_HL7Server.Logger.Info($"Ack received: {hl7Request.Request.ControlID}");
if (ackRetries-- > 0)
{
return(false);
}
else
{
throw new HL7InterfaceException($"The message was not acknowledged after a total number of {m_HL7Protocol.Config.MaxAckRetriesNumber} retries");
}
}
return(true);
}
public async Task <HL7Request> SendHL7MessageAsync(IHL7Message message)
{
HL7Request hl7Request = new HL7Request(message);
if (!m_OutgoingRequests1.TryAdd(message.ControlID, hl7Request))
{
throw new HL7InterfaceException("m_OutgoingRequests");
}
m_OutgoingRequests.Add(hl7Request);
TaskCompletionSource <HL7Request> senderTaskCompletionSource = new TaskCompletionSource <HL7Request>();
hl7Request.SenderTask = Task.Run(() =>
{
bool success = false;
int responseRetries = m_HL7Protocol.Config.MaxResponseRetriesNumber;
try
{
do
{
success = SendMessageOne(hl7Request, ref responseRetries);
}while (!success);
}
catch (Exception ex)
{
if (ex is HL7InterfaceException)
{
throw ex;
}
}
finally { hl7Request.RequestCompletedEvent.Set(); }
return(hl7Request);
}, hl7Request.RequestCancellationToken.Token);
return(await hl7Request.SenderTask); //.ConfigureAwait(false);
}
private void OnNewRequestReceived(HL7Session session, HL7Request requestInfo)
{
ProcessIncomingRequest(requestInfo);
}