Do not run any of the header rewriting for messages. This will
simply relay SCCP friends to the MTP library. Some work on msc_conn.c
is needed to avoid calling most of it.
It appears that we run into a PING timeout before we have received
the first message and then will try to close the connection tiwce.
Stop the msc_timeout when we close down the connection.
Make the msc_conn responsible for creating the link to
the core network and reopening it, make the BTS code just
call the msc methods and the MSC will throw away data in
case it can not be forwarded.
This avoids a problem that we start a reconnect timer
while we have a connection in progress and then add the
same file descriptor twice. This is mostly a speculative
fix to the problem.
Remove code duplication, the only difference is that the generic
callback pointer is not reset. But as we have lost the connection
we will go through the normnal connect again which will fix things.
Holger Hans Peter Freyther