Server strategy detection

[xaviervia]

The JSTP Node should be able to guess the server strategy when making an outbound dispatch towards another host. Currently the outbound strategy needs to be hardcoded, which is not ideal.

Chances are the code for detecting the server strategy should be written for JSTP. In order:

• Check out if EventMachine provides an easy way to detect a protocol error
• Check if detection upon exception is a robust enough strategy for detection
• Read the complete RFC 6455 which specifies the Websocket protocol in order to further understand the options