Bug ID: JDK-8235141 Specify the required standard socket options for the socket types in the java.net package

Type: Bug
Component: core-libs
Sub-Component: java.net
Affected Version: 9,13,14

Priority: P3
Status: Resolved
Resolution: Fixed

Submitted: 2019-11-29
Updated: 2024-11-04
Resolved: 2019-12-10

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JDK 14
14 b27Fixed

The socket types in the java.net package do not specify the minimum set
of standard socket options that they are required to support. The set of
"supported" socket options can be retrieved programmatically, with the
supportedOptions() method, but this set may include non-standard socket
options as well as standard ones. To assert compliance checks then the
set of Java SE standard options that are required to be supported should
be explicitly documented in each of the socket types, similar to what is
done for the channels area, e.g. SocketChannel, etc.

For example:

"[[Server|Datagram|Multicast]Socket] supports the following options:

   SO_SNDBUF	The size of the socket send buffer
   SO_RCVBUF	The size of the socket receive buffer
   ...
   
Additional (implementation specific) options may also be supported."

Blocks :	JDK-8230211 - Prepare DatagramSocket for alternative DatagramSocketImpl
CSR :	JDK-8235185 - Specify the required standard socket options for the socket types in the java.net package
Duplicate :	JDK-8234626 - Different Socket's:: supportedOptions() behavior mismatch from spec.
Relates :	JDK-8234626 - Different Socket's:: supportedOptions() behavior mismatch from spec.