Callbacks are also commonly referred to as duplex operations

Not all bindings support callback operations. Only bidirectional-capable bindings support callback operations.
For example, because of its connectionless nature, HTTP cannot be used for callbacks, and therefore you cannot use callbacks over the  BasicHttpBinding or the WSHttpBinding.
The only two commonly used bindings that offer callbacks are the  NetTcpBinding and the  NetNamedPipeBinding, because by their very nature, the TCP and the IPC protocols support duplex communication.

To support callbacks over HTTP, WCF offers the WSDualHttpBinding, which actually
sets up two WS channels: one for the calls from the client to the service and one for the calls from the service to the client. But the  NetTcpRelayBinding by and large deprecates the  WSDualHttpBinding in the vast majority of callback cases.

댓글

댓글 쓰기

이 블로그의 인기 게시물

Oracle NLS_DATE_FORMAT 변경

1) 오라클 환경변수 조회하기 select * from v$nls_parameters; 2) 날짜형식 변경하기 alter session set nls_date_format = 'YYYY-MM-DD'; //datefromat변경 alter session set nls_timestamp_format = 'YYYY-MM-DD HH:MI:SS'; // timestamp_format변경 3) 정상적으로 변경되었는지 확인 select * from emp where hiredate = '1981-02-22'; /*alter [session/system]  1. session : 현재접속한 session(쿼리)에서만 변경  2. system : database자체를 변경   scope=[both/spfile]   -both : 바로적용 또는 재시작(오류날 가능성이 높다)   -spfile : DB를 재시작후에 변경 */ **SQL Command Line으로 들어가서 system계정으로 접속해서 바꿔야 한다.(영구적 변경) alter system  set nls_date_format = 'YYYY-MM-DD'   scope=spfile; alter system  set nls_timestamp_format = 'YYYY-MM-DD HH:MI:SS'   scope=spfile; 4)sqlplus에 sys as sysdba 로 접속해서, shutdown immediate;startup; 실행
자세한 내용 보기

Stop console process using Ctrl+C.

http://stackoverflow.com/questions/813086/can-i-send-a-ctrl-c-sigint-to-an-application-on-windows https://msdn.microsoft.com/en-us/library/ms686016(VS.85).aspx private void Button1_OnClick(object sender, RoutedEventArgs e) { var file = new FileInfo(@"C:\temp\video.mp4"); if (file.Exists) { file.Delete(); } ct = new CancellationTokenSource(); Task.Factory.StartNew(() => { var pInfo = new ProcessStartInfo("cmd.exe", string.Format("/c {0} \"{1}\"", new object[] {"adb.bat", file.Name})); pInfo.CreateNoWindow = true; pInfo.UseShellExecute = false; pInfo.RedirectStandardError = true; pInfo.RedirectStandardOutput = true; pInfo.RedirectStandardInput = true; var p = Process.Start(pInfo); ...
자세한 내용 보기

Alternative to IValueConvert, QuickConverter

https://quickconverter.codeplex.com/ Quick Setup Steps Add the assembly reference to your project. This can also easily be done using  the NuGet package . Add the namespaces to Quick Converter that it will need to know about (before any xaml that uses it is loaded). e.g. In your WPF application's App.xaml.cs file: public   partial   class   App  :  Application { public  App() :  base () { // Setup Quick Converter. // Add the System namespace so we can use primitive types (i.e. int, etc.). QuickConverter. EquationTokenizer .AddNamespace( typeof ( object )); // Add the System.Windows namespace so we can use Visibility.Collapsed, etc. QuickConverter. EquationTokenizer .AddNamespace( typeof (System.Windows. Visibility )); } } Add the Quick Converter namespace to your xaml files so you can ref...
자세한 내용 보기