Simple HTTP client implementation (thanks Johan Lantz for the suggestion)

[bennylp]

A simple HTTP client implementation will make way for XCAP client implementation.

Specifications

Assorted specifications:

• Supported HTTP method(s):
  • GET
  • PUT
  • DELETE
• Asynchronous:
  • application create/build the HTTP request
  • the request is submitted
  • application will be notified when the request is complete and complete response has been received.
• Application may cancel the request once it has been submitted
• Options:
  • request timeout support
  • ability to add custom headers
  • HTTPS (optional)