A DESCRIPTION OF THE PROBLEM :
java.net.Socket and java.net.DatagramSocket have methods for modifying the send and receive buffer size. However, apparently nowhere in the documentation is the data unit specified, so it is not clear whether it is bit or byte. One could deduce the data unit from the option meaning for Linux (socket(7)), however it would be better if the data unit was mentioned in the Java documentation.

Affected:
https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/SocketOptions.html#SO_SNDBUF
https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/SocketOptions.html#SO_RCVBUF

https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/Socket.html#getReceiveBufferSize()
https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/Socket.html#getSendBufferSize()
https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/Socket.html#setReceiveBufferSize(int)
https://docs.oracle.com/en/java/javase/13/docs/api/java.base/java/net/Socket.html#setSendBufferSize(int)