tree a09bf47fa72b56cd960c83ec15771fc216c08b81
parent ceb525d85512bde884b0f01a3aa93f2943dcf5f3
author Chia-chi Yeh <chiachi@android.com> 1314737915 -0700
committer Chia-chi Yeh <chiachi@android.com> 1314737951 -0700

SIP: add the check for expiry time in Contact header.

There can be three expiry times in the same message header. We
choose the smaller value in Expires header and Contact header,
and then we obey the value defined in Min-Expires header. If
none of them is set, the default value is used.

Bug: 5178284

Change-Id: Ie9d4a48c93863e82e5197bb4a0db3f4fec56857c