tree e1be5b5e6f78216963925c95f15b8e0d6aed9535
parent 992138cda9be63f6126ca67885fc0eeff6b85119
author Jungho Ahn <jhahn@google.com> 1442937575 -0700
committer Jungho Ahn <jhahn@google.com> 1442937575 -0700

third_party/mdns: support multiple watchers

  Currently, the mdns package supports only one watcher per service.
  This CL extends it to support multiple watchers for a same service.
  Also it provides a stop function to stop watching.

  Add 'port' to RemoveService() args to uniquely identify the registered
  services better.

  Change to clean expired records more frequently (3 sec) so that a
  watcher can learn goodbye packets quickly.

  Fix data race in setting TTL

  Refactor check functions in unit tests so that error shows the failed
  line better.

MultiPart: 1/2
Change-Id: If0385743a0106b6f3779b49361f1c0752199f2b9