Subdomain application

Subdomain applications delegate requests based on host. This makes virtual hosting very easy. This works like a subdir application, only switches to the corresponding application based on host name instead of sub directory.

Example

 import mainsite 
 import wiki
 import usersite

 mapping = ( 
     "(www\.)?example.com", mainsite.app, 
     "wiki.example.com", wiki.app,
     ".*\.example.com", usersite.app 
 ) 

 app = web.subdomain_application(mapping)

 if __name__ == '__main__':
     app.run()