Report leaky sockets with a LD_PRELOAD module
Detect potentially leaky sockets, using a LD_PRELOAD module preload. Sockets that are still alive after a given time are listed in a dump file produced regularly for audit purpose.
The following calls are intercepted to audit:
socketsocketpairacceptaccept4close
cmake .
makeLD_PRELOAD=libwetsocks.so your_program your_arguments ...LD_PRELOAD=$PWD/libwetsocks.so myserver >/dev/nullThe following environment variables can be defined to tune the thresholds:
WETSOCKS_DUMP_EVERY_S: Dump every seconds (300)WETSOCKS_YOUNGEST_ENTRY_S: Youngest socket to be considered leaking (1800)WETSOCKS_WARMUP_ENTRY_S: Grace for process to stabilize at startup (300)WETSOCKS_DUMP_FILE_PREFIX: Dump file prefix (leaky-socket-stats-for-pid-)WETSOCKS_SILENT: Don't emit any superfluous stuff on stderr (false)