On 06/18/2016 06:10 PM, Jiří Činčura wrote:
>> Do you receive pflag_compress set in  accept->p_acpt_type? You should
>> check this value to decide use compression later or not.
> Yes, I do. I receive 261, which is ptype_lazy_send | pflag_compress, if
> I'm not mistaken.
>
> Not sure where to look next.
>
>> As far as I know no such flag exists.
>> Try to make sure std client does work with this server using compressed
>> connection.
> With the `WireCompression = true` I can connect using isql. So I suppose
> it should work. I don't see any flag in MON$ATTACHMENTS to see whether
> it really used compression.
>

You may try (if needed, I know you've found a reason) switch -z in isql 
- in that case it displays flag Z (zlib) in protocol name. Like this:

LI-T4.0.0.258-dev Firebird 4.0 Unstable/tcp (localhost)/P13:C <== no 
compression

LI-T4.0.0.258-dev Firebird 4.0 Unstable/tcp (localhost)/P13:CZ <== 
compression

('C' means that connection is enCrypted)


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