An implementation may restrict the use of any of these options by offering them only in the privileged or read-only mode, or if fd relates to specific transport providers. The values of this option are implementation-defined. The system supplies utilities to process the traces. Note that an implementation may also provide other means for debugging. The option value specifies the linger period.
Data still pending after the linger period has elapsed is discarded.
The implementation may place upper and lower limits to this value. Requests that fall short of the lower limit are negotiated to the lower limit. This option is used to adjust the internal buffer size allocated for the receive buffer. The buffer size may be increased for high-volume connections, or decreased to limit the possible backlog of incoming data. This request is not an absolute requirement.