hg: jdk/sandbox: 8237890: DatagramPacket::getSocketAddress doesn't specify what happens if address or port are not set

[chris.hegarty at oracle.com]

Changeset: 37fb240579e5
Author:    pconcannon
Date:      2020-04-22 12:34 +0100
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/37fb240579e5

8237890: DatagramPacket::getSocketAddress doesn't specify what happens if address or port are not set
Summary: This fix changes the default port of a DatagramPacket from -1 to 0, which changes the behaviour of calling getSocketAddress with no port set from throwing an IAE to returning an InetSocketAddress representing any local address with port 0.
Reviewed-by: alanb, chegar, dfuchs

! src/java.base/share/classes/java/net/DatagramPacket.java
! src/java.base/share/classes/sun/nio/ch/DatagramSocketAdaptor.java
! test/jdk/java/net/DatagramPacket/Constructor.java
+ test/jdk/java/net/DatagramPacket/Getters.java
! test/jdk/java/net/DatagramSocket/SendCheck.java