Host Switcher
Introduction
Host Switcher parses the host file, show available options and let you set a host using the tray. This is useful when we point to a single dns name for WCF, Web Services and so on but we can test different environments.
Using the code
Important: Before running the utility, grant full control access to your user for hosts file at %systemroot%\System32\drivers\etc\
When running the application it will parse the hosts file and build a menu with options in the tray. An example of hosts file:
# DIT - DITSERVER01.domain.com #10.65.116.200 site.domain.com # SIT - SITSERVER01.domain.com 10.59.169.44 site.domain.com # Prod - PRODSERVER01.domain.com #10.59.71.132 site.domain.com # Prod - PRODSERVER02.domain.com #10.59.71.133 site.domain.com # Prod - PRODSERVER03.domain.com #10.59.61.169 site.domain.com # Prod - PRODSERVER04.domain.com #10.59.61.220 site.domain.com
In this example, when user selects option "DIT - DITSERVER01.domain.com" in the tray, the application will comment the SIT entry and uncomment the DIT entry.
Option "[No Hosts]" will comment out all entries.
Option "View Hosts File" will open hosts file in notepad for editing.
If hosts file is changed externally, application will automatically rebuild the menu.
If right clicking the server option in the tray, it will copy the server name.
When exiting the application, it will ask if user wants to keep current host configuration or comment all entries.
The code is simple, with most important methods ParseHostsFile() that will retrieve the entries in hosts file and present to the user and UpdateHosts() that will comment previous entry and uncomment the selected one.
Points of Interest
Nothing complex in the code, I just used FileSystemWatcher to get any external changes in host file and automatically update the options for the application.
History
Initial release 1.0
发表评论
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