Feature request: allow GET requests in the RPC

[3s3s]

I suggest making the GUI part of the wallet as html page. Desctop application (bitcoin-qt) looks unusual for new users who are used to online banking.
For this, it is sufficient to allow GET requests in the RPC module.

[laanwj]

No, we will not use HTML in the bitcoin core client. It might look unusual but that is small fries compared with the security issues with interfacing with a browser, or (snicker) integrating one.

Allowing GET requests to post JSON-RPC requests is a violation of the standard use of http methods. GET should never change state. However you can pass -rest option to be able to use a (read-only, stateless) subset of the API through GET.