/// <summary>
/// Asynchronously tries to perform the refresh request.
/// </summary>
/// <param name="security">The security.</param>
/// <param name="conversationId">The conversation identifier.</param>
/// <returns>The SOAP result of the Ping response.</returns>
public async Task <SoapResult <OTA_PingRS> > TryRefreshAsync(Security security, string conversationId)
{
OTA_PingRQ request = this.soapServiceFactory.CreatePingRequest();
SWSService service = this.soapServiceFactory.CreatePingService(conversationId, security);
var source = new TaskCompletionSource <SoapResult <OTA_PingRS> >();
service.OTA_PingRQCompleted += (s, e) =>
{
if (SoapHelper.HandleErrors(e, source))
{
if (e.Result.Items.Any())
{
ErrorsType error = e.Result.Items[0] as ErrorsType;
if (error != null && error.Error != null && error.Error.Length > 0)
{
source.TrySetResult(SoapResult <OTA_PingRS> .Error(error.Error.First()));
return;
}
}
source.TrySetResult(SoapResult <OTA_PingRS> .Success(e.Result));
}
};
service.OTA_PingRQAsync(request);
return(await source.Task);
}
/// <summary>
/// Handles the errors in asynchronous calls.
/// If an error has occurred, sets a result in the task completion source containing information about the problem:
/// either the Exception that has occurred or the cancellation flag.
/// </summary>
/// <typeparam name="TResult">The type of the result.</typeparam>
/// <param name="args">The <see cref="AsyncCompletedEventArgs"/> instance containing the event data.</param>
/// <param name="source">The <see cref="TaskCompletionSource"/> instance related to the SOAP result.</param>
/// <returns><c>true</c> if no errors have occurred; otherwise <c>false</c></returns>
public static bool HandleErrors <TResult>(AsyncCompletedEventArgs args, TaskCompletionSource <SoapResult <TResult> > source)
{
if (args.Error != null)
{
source.TrySetResult(SoapResult <TResult> .Error(args.Error));
return(false);
}
else if (args.Cancelled)
{
source.TrySetResult(SoapResult <TResult> .Cancelled());
return(false);
}
return(true);
}
/// <summary>
/// Creates a new session asynchronously.
/// </summary>
/// <param name="conversationId">The conversation identifier.</param>
/// <returns>The SOAP result containing the SessionCreate response.</returns>
public async Task <SoapResult <SessionCreateRS> > CreateSessionAsync(string conversationId)
{
SessionCreateRQ request = this.soapServiceFactory.CreateSessionCreateRequest();
SessionCreateRQService service = this.soapServiceFactory.CreateSessionCreateService(conversationId);
// This is an asynchronous SOAP call.
// We need to convert event-based asynchrous call to task-based one.
// The event is triggered when the action is completed.
// Then it sets the result and ends the task.
var source = new TaskCompletionSource <SoapResult <SessionCreateRS> >();
service.SessionCreateRQCompleted += (s, e) =>
{
if (SoapHelper.HandleErrors(e, source))
{
source.TrySetResult(SoapResult <SessionCreateRS> .Success(e.Result, service.SecurityValue));
}
};
service.SessionCreateRQAsync(request);
// Return the asynchronous task.
return(await source.Task);
}