tree f880c9210be6b53d028608e82562fdda3e0efe99
parent f357c96273ad8c0f7acc0e15213cced2f0b21883
author Erik Kline <ek@google.com> 1431683357 +0900
committer Erik Kline <ek@google.com> 1432091335 +0900

Close netlink socket when shutting down IpReachabilityMonitor

This forces the NetlinkSocketObserver thread to exit quickly, rather
than lingering until the next random netlink neighbor multicast message
arrives.

Additionally, add a small unittest to verify that multiple calls to
NetlinkSocket#close() are safe.

Change-Id: I101730fad7eee72f9c6e8a7e7bd10c634f2ceab4