Spinning in _XReply

[Daniel Stone]

On Fri, Feb 25, 2011 at 02:08:38PM +0200, Rami Ylimäki wrote:
> On 02/23/2011 04:35 PM, Michal Suchanek wrote:
> >>X server seems to preserve the extension codes until the server is
> >>regenerated and therefore all connections should use the same codes.
> >>
> >Is that guaranteed by some protocol or does it just happen to work as
> >the requests in error handler did?
> 
> This is a good point and I can't find a definite answer for it.
> 
> Documentation of "C.2.1 XInitExtension" from Xlib manual says that
> the Xlib specific extension number in XExtCodes is connection
> specific, which makes sense, because the number is managed
> internally in Xlib and not asked from server. Then "C.5.11 Deriving
> the Correct Extension Opcode" says that a separate XExtCodes should
> be maintained for each connection.
> 
> So I think that one shouldn't assume that opcodes stay the same,
> even though it seems to be so in practice.

Er, really? How would sending requests then work without an event from
the server telling you to round-trip and get the extension list again?

Cheers,
Daniel
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