Bosh-0.6 - better XML parsing + session creation response + session context
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Key: VYSPER-212
URL: https://issues.apache.org/jira/browse/VYSPER-212
Project: VYSPER
Issue Type: Improvement
Components: BOSH
Reporter: Bogdan Pistol
Priority: Minor
Attachments: bosh-0.6.patch
Includes an upgrade to the previous implementation that uses nbxml. In XMPP the
XML stream flows at level 1 depth, but for BOSH the XML are not streams, but
full XML (not partial), this means that stanza should be emitted at depth 0.
I redesigned the session context handling, previously I used servlet's session
(maintained with cookies or URL params), but this is not very reliable, and
some clients could have problems (e.g. browser with disabled cookies). There is
also another problem, the cookies are set by sending a response with some
cookie headers to the browser, this should be accounted when dealing with
suspended and queued requests. Also there is a session expire mechanism for
servlets, so this is to be accounted too.
For all the previous stated reasons I redesigned the session context so that
would not use at all the servlet mechanism of keeping sessions. In the
specification (xep-0124) it is said that "All requests after the first one MUST
include a valid 'sid' attribute. The initialization request is unique in that
the <body/> element MUST NOT possess a 'sid' attribute." So I create a session
only when the BOSH request doesn't have a sid attribute, and then I use a
concurrent retrieving map to work with previous sessions.
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