[sr-dev] tcp quick connect is not done reliably

[Juha Heinanen]

Andrei Pelinescu-Onciul writes:

> My guess is that is something else that prevents even trying to forward
> the first time (e.g. blacklisted destination, onsend_route).
> What reply does it send back?

there is no blacklists in the config, neither onsend_route.

> A dump of the tcp traffic and runnning with a high debug level will also
> help finding out what's happening.
> Last but not least: sercmd dst_blacklist.view

i'll come back when i'm able to reproduce this at will.  i have noticed
it a few times, but it does not happen every time when i restart sr.

> Regarding "quick connect" note that this message appears only when a
> connect() finishes immediately and the following send() is able to
> send all the data. This happens mostly on localhost or fast local
> networks. In general the connect() will not complete so fast  and the
> data will be queued for sending later (after the connection is
> established).

the problem has occurred on localhost (destination address
127.0.0.1:5082).

-- juha