FreeTDS Development Group

[Andy Qian <andyq AT intapp.com>]

Hi, James,

thank you very much for your suggestions. They are really helpful.

I modified both sybase and freetds codes as you suggested, and tested 
them. It worked. Now I can connect to azure server with modified sybase 
and freetds. I also tested with other versions of ms sql server. so far 
so good.

for curiosity, is there any specific reason why the previous versions of 
sybase/freetds do not use the direct connection approach?  or is there 
any risk for using the direct-connection approach?


thanks again.



Andy









On 10/01/2011 07:26 AM, James K. Lowden wrote:
> Hi Andy,
>
> On Fri, 30 Sep 2011 16:32:32 -0700
> Andy Qian<andyq AT intapp.com>  wrote:
>
> > I have modified struct imp_dbh_st in dbdimp.h
> > (DBD::Sybase level) by adding one more field there, int directConn,
> > and also updated dbdimp.c file correspondingly.
> Rather than an int, I suggest "char *dbname".  If the dbname appears in
> the connection string, you stash it there, else it's NULL and behavior
> reverts to the current form: no dbname in the login packet.
>
> > at freetds level, I may need to modify struct CS_CONNECTION
> Luckily, no!  :-)  CS_CONNECTION is a struct _cs_connection, which
> contains a TDSLOGIN *tds_login, which has DSTR database.  If you set
> that before connecting to the server, it will be available to be
> included in the login packet.
>
> The function you want to extend appears to be ct_con_props().  You'll
> need to add a new enumeration, let's call it "CS_DBNAME", to the
> anonymous enum that starts with CS_USERNAME in cspublic.h.  Add that to
> the switches in ct_con_props() and call tds_set_database_name().
>
> Just eyeballing the code, that looks to be all that's needed.  The
> libtds login function will include the dbname in the login packet.
>
> HTH.
>
> --jkl
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