Umm, if you want to do it for "all" connections without support from the respective applications, it'd be messy.
A couple of lateral approaches - 1 (a). Hack libsocket, on all socket() calls unconditionally add SO_KEEPALIVE (?) using setsockopt, recompile. Statically linked programs (Oracle?) will not pick it up. 1 (b). Code another shared lib, in the socket() call, add another call to setsockopt to add the keep alive flag. then LD_PRELOAD it globally for all applications. 2. Write a custom program which monitors all active connections, and periodically masquerades/spoofs a "keep alive" packet on those active connections using raw sockets. 3. DTrace ? Using dtrace instrument all socket() calls, and possibly do something to add the SO_KEEPALIVE option to the socket. For the applications which make at least one call to setsockopt, it will be trivial (modify the argument flags and add the keep alive flag). Not sure about how to do it if there is no such call. Would be fun :D This message posted from opensolaris.org _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
