ldap: handle closed socket on receive packet

[osvegn]

I've some issue about closed socket on receive packet. I don't really understand why, but the SendPacket method successfully send the packet, but the ReceivePacketFillSockBuffer method has a closed connection.
In my case, I tried by restarting a samba active directory while a socket is open.
So I started to think about trying to reconnect the socket, but the question is "What packet should I receive from my request if it has been closed then reconnect?" I assume nothing cause the context has been lost.
In my opinion, I should restart the request from the beginning, but I'm not sure about how to do it.
I started to do something, but I don't know yet how to finish...

[synopse]

Please give some more feedback about the context.
For instance, is it on a somewhat idle connection? SendPacket() could succeed at socket level, but fail on the server side because it is disconnected for some reason (keep alive timeout) on the server...
Some logs may help.
AFAICT if we recreate the connection, we need to restart the request from scratch, so your fix won't be enough.
This auto-reconnection should already be taken into account, IIRC.