private async Task <PPError> OpenAsyncCore(URLRequestInfo requestInfo, MessageLoop openLoop = null)
{
var tcs = new TaskCompletionSource <PPError>();
EventHandler <PPError> handler = (s, e) => { tcs.TrySetResult(e); };
try
{
HandleOpen += handler;
if (MessageLoop == null && openLoop == null)
{
Open(requestInfo);
}
else
{
Action <PPError> action = new Action <PPError>((e) =>
{
var result = (PPError)PPBURLLoader.Open(this, requestInfo,
new BlockUntilComplete()
);
tcs.TrySetResult(result);
}
);
InvokeHelper(action, openLoop);
}
return(await tcs.Task);
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
tcs.SetException(exc);
return(PPError.Aborted);
}
finally
{
HandleOpen -= handler;
}
}
/// <summary> /// This function begins loading the <code>URLRequestInfo</code> asynchronously. /// The operation completes when response headers are received or when an /// error occurs. Use ResponseInfo to access the response /// headers. /// </summary> /// <param name="requestInfo">A <code>URLRequestInfo</code> corresponding to a /// URLRequestInfo.</param> /// <param name="openLoop">Optional MessageLoop instance that can be used to post the command to</param> /// <returns>Error code</returns> public Task <PPError> OpenAsync(URLRequestInfo requestInfo, MessageLoop openLoop = null) => OpenAsyncCore(requestInfo, openLoop);
/// <summary> /// This function begins loading the <code>URLRequestInfo</code>. /// The operation completes when response headers are received or when an /// error occurs. Use ResponseInfo to access the response /// headers. /// </summary> /// <param name="requestInfo">A <code>URLRequestInfo</code> corresponding to a /// URLRequestInfo.</param> /// <returns>Error code</returns> public PPError Open(URLRequestInfo requestInfo) => (PPError)PPBURLLoader.Open(this, requestInfo, new CompletionCallback(OnOpen));
