What response did you get when you put your BOSH server IP "
https://xx.xx.xx.225:7335/" into browser?
you should get soemthing like below...If yes, then just put this as your httpbinding address.This URI is for XMPP communication via the BOSH protocol.
Please reference the following protocols:
RFC 3920: Extensible Messaging and Presence Protocol (XMPP): Core
RFC 3921: Extensible Messaging and Presence Protocol (XMPP): Instant Messaging and Presence
XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH)
XEP-0206: XMPP Over BOSH