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Moderne Web-Anwendungen mit ASP.NET MVC und JavaScript, 2nd Edition
book

Moderne Web-Anwendungen mit ASP.NET MVC und JavaScript, 2nd Edition

by Manfred Steyer, Holger Schwichtenberg Dr.
July 2014
Intermediate to advanced
560 pages
17h 58m
German
O'Reilly Verlag
Content preview from Moderne Web-Anwendungen mit ASP.NET MVC und JavaScript, 2nd Edition

Cross Origin Resource Sharing (CORS)

Für SignalR existiert mit dem NuGet-Paket microsoft.owin.cors auch eine Unterstützung für Cross Origin Resource Sharing (CORS). Um CORS für sämtliche Clients zu aktivieren, ruft der Entwickler innerhalb von Startup.Configuration lediglich die Erweiterungsmethode app.UseCors(CorsOptions.AllowAll) auf. Um CORS nur für bestimmte Clients zu erlauben, übergibt der Entwickler an UseCors eine Instanz von CorsOptions. Über deren Eigenschaft CorsPolicy legt er zum Beispiel die erlaubten Clients oder HTTP-Methoden fest. Darüber hinaus kann er unter Verwendung der Methode Map CORS sowie den Einsatz von Frameworks, wie SignalR oder ASP.NET Web API, auf einen bestimmten Pfad einschränken:

app.Map("/signalr", map => { app.UseCors(CorsOptions.AllowAll); ...
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ISBN: 9783955617431Purchase book