Thread: making way for DRDA

Hi all,

I've started separating out the protocol stuff into a single module under 
src/backend/pgnet.  I've posted some initial diffs that move the 
authentication, cancels, and beginning/end of results out of the mainline 
code.  I still need to move the sending of rows and some miscellaneous 
error handling things.  I've posted my current code at:

http://opendrda.sourceforge.net/pgsql/

I'd appreciate it if folks wanted to take a look and give some feedback 
about the direction and getting this ready to merge.

Cheers,

Brian

Hi Bruce,

On Sat, 16 Feb 2002, Bruce Momjian wrote:

> I have just a few stylistic suggestions.  First, we need context diff
> (diff -c) rather than regular diffs.  

Will do.

> Second, I was wondering why you
> called it pgnet.  If we are already in the backend code, seems it could
> all just be called 'net'.  

I wanted to avoid something that might have a namespace clash with other 
modules or OS headers so "net.h" seemed to be shakey ground.  I'm flexible 
on this point.

> Third, what is the value of this extra level
> of abstraction?  This may already have been covered but I forgot.

I think eventually I'm going to try to make all calls via a set of 
function pointers in a structure, so there shouldn't be that much 
overhead.  I'm still debating that as there could be some generic 
processing going on and then some protocol-specific processing.

The eventual goal though is to allow pgsql to support multiple network 
protocols.  I'm mostly interested in DRDA (the OpenGroup standard), but I 
know others want SQL*Net (on the todo list).  

Cheers,

Brian