Add the abilty to set a connection timeout separate from socket timeout

[jaiew]

This allows the connection timeout to be configured differently from the socket timeout.

Getting a connection should be relatively quick and you don't want to tie that to the same timeout as waiting for a request to process.

This makes the retry functionality much better as well as it only retries on connection failures.

[jaiew]

Just wondering if there has been a chance to look at this?