/// <summary>Sends a request to the EFT-Client</summary>
/// <param name="request">The <see cref="EFTRequest"/> to send</param>
/// <param name="member">Used for internal logging. Ignore</param>
/// <returns>FALSE if an error occurs</returns>
public async Task <bool> WriteRequestAsync(EFTRequest request, [CallerMemberName] string member = "")
{
SetCurrentRequest(request);
string msgString = "";
try
{
msgString = (request is EFTPosAsPinpadRequest) ? _parser.EFTRequestToXMLString(request) : _parser.EFTRequestToString(request);
}
catch (Exception e)
{
Log(LogLevel.Error, tr => tr.Set($"An error occured parsing the request", e));
throw;
}
Log(LogLevel.Debug, tr => tr.Set($"Tx {msgString}"));
// Send the request string to the IP client.
try
{
await _clientStream.WriteRequestAsync(msgString);
}
catch (Exception e)
{
Log(LogLevel.Error, tr => tr.Set($"An error occured sending the request", e));
Disconnect();
throw new ConnectionException(e.Message, e.InnerException);
}
return(true);
}
/// <summary>Sends a request to the EFT-Client</summary>
/// <param name="request">The <see cref="EFTRequest"/> to send</param>
/// <param name="member">Used for internal logging. Ignore</param>
/// <returns>FALSE if an error occurs</returns>
public bool DoRequest(EFTRequest request, [CallerMemberName] string member = "")
{
SetCurrentRequest(request);
Log(LogLevel.Info, tr => tr.Set($"Request via {member}"));
// Save the current synchronization context so we can use it to send events
syncContext = System.Threading.SynchronizationContext.Current;
if (requestInProgess)
{
Log(LogLevel.Error, tr => tr.Set("Ignored, request already in progress"));
return(false);
}
if (!IsConnected)
{
Log(LogLevel.Info, tr => tr.Set($"Not connected in {member} request, trying to connect now..."));
if (!Connect())
{
Log(LogLevel.Error, tr => tr.Set("Connect failed"));
return(false);
}
}
var r = SendIPClientRequest(request);
requestInProgess = r;
return(r);
}
/// <summary>
/// Sends a request to the EFT-Client, and waits for the next EFT response of type T from the client.
/// All other response types are discarded.. This function is useful for request/response pairs
/// where other message types are not being handled (such as SetDialogRequest/SetDialogResponse).
///
/// Since receipts and dialog messages cannot be handled with this function, it is not
/// recommended for use with transaction, logon, settlement ets
/// </summary>
/// <remarks>
/// This function will continue to wait until either a message is received, or an exception is thrown (e.g. socket disconnect, cancellationToken fires).
/// It is important to ensure cancellationToken is configured correctly.
/// </remarks>
/// <typeparam name="T">The type of EFTResponse to wait for</typeparam>
/// <param name="request">The <see cref="EFTRequest"/> to send</param>
/// <param name="cancellationToken">The token to monitor for cancellation requests</param>
/// <param name="member">Used for internal logging. Ignore</param>
/// <returns> An EFTResponse if one could be read, otherwise null </returns>
/// <exception cref="ConnectionException">The socket is closed.</exception>
/// <exception cref="TaskCanceledException">The cancellation token was cancelled before the task completed</exception>
public async Task <T> WriteRequestAndWaitAsync <T>(EFTRequest request, System.Threading.CancellationToken cancellationToken, [CallerMemberName] string member = "") where T : EFTResponse
{
if (!await WriteRequestAsync(request, member))
{
return(null);
}
return(await ReadResponseAsync <T>(cancellationToken));
}
private void SetCurrentRequest(EFTRequest request)
{
// Always set _currentRequest to the last request we send
currentRequest = request;
if (request.GetIsStartOfTransactionRequest())
{
_currentStartTxnRequest = request;
}
}
bool SendIPClientRequest(EFTRequest eftRequest)
{
// Store current request.
this.currentRequest = eftRequest;
// Build request
var requestString = "";
try
{
requestString = _parser.EFTRequestToString(eftRequest);
}
catch (Exception e)
{
Log(LogLevel.Error, tr => tr.Set($"An error occured parsing the request", e));
throw;
}
Log(LogLevel.Debug, tr => tr.Set($"Tx {requestString}"));
// Send the request string to the IP client.
return(socket.Send(requestString));
}
