Marks out-of-band data.
const MSG_OUT_OF_BAND: MsgFlags = MsgFlags(cty::MSG_OOB);
This can be used when sending and receiving messages and appears in flags of received messages.
When sending messages, this flag marks the message as out-of-band data.
When receiving messages, this flag requests out-of-band data instead of regular data.
In message flags this flag signals that the message is out-of-band data.
sendmsg(2) and MSG_OOB therein
recvmsg(2) and MSG_OOB therein