anonymous wrote : 1. How do I read an HTTP header value that was passed by the client?
I think FacesContext.getCurrentInstance().getExternalContext().getRequestHeaderMap(); will contain this.
anonymous wrote : 2. How do I intercept the (partially?) rendered output, tweak it, and send it on its way?
I haven't done this, but perhaps a servlet filter?
This was discussed on the facelets list within the last week - I would suggest you take a look, and perhaps follow up there?
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