Tel Map

Year: 2017

2017-11-20 | JavaScript |

Aurelia – validation of dependent inputs

Form validation in Aurelia is actually pretty nice. You can configure the validation rules in a chainable api and add multiple rules to single fields. However there is a problem if you want to trigger the validation of an input when another… more

2017-11-18 | Linux |

Changing the Timezone in Debian 9 (Stretch)

Since the release of the newest Debian version 9 (Codename “Stretch”) in June 2017, most system administrators using this distribution will upgrade their systems eventually. One of the changes in the new version that first caught my eye, is that you can’t… more

2017-10-10 | ASP .NET |

ASP.NET Core 2.0 Disable Authentication in Development Environment

This article describes how to disable authentication for ASP.NET Core 2.0. ASP.NET Core JWT Authentication I have some Rest API which I want to protect via JwtBearer token in production e.g.

  However in order to test the API, for development I… more

2017-08-10 | Java |

JSF ViewState Hack Attempt: java.lang.StringIndexOutOfBoundsException: String index out of range: -1 – com.sun.faces.renderkit.ServerSideStateHelper.getState (

Hack Attempt on JSF ViewState This article explains why the error java.lang.StringIndexOutOfBoundsException: String index out of range: -1 in the class ServerSideStateHelper in the method getState (313) might be someone trying to hack your application server. It is getting quite technical in here… but… more