Package org.xbill.DNS

Class TcpKeepaliveOption

java.lang.Object

org.xbill.DNS.EDNSOption

org.xbill.DNS.TcpKeepaliveOption

public class TcpKeepaliveOption
extends EDNSOption

TCP Keepalive EDNS0 Option, as defined in https://datatracker.ietf.org/doc/html/rfc7828

Author:

Klaus Malorny

See Also:

• OPTRecord

Nested Class Summary

Nested classes/interfaces inherited from class org.xbill.DNS.EDNSOption

EDNSOption.Code

Constructor Summary

Constructors

Constructor	Description
TcpKeepaliveOption()	Constructor for an option with no timeout
TcpKeepaliveOption(int t)	Constructor for an option with a given timeout.
TcpKeepaliveOption(Duration t)	Constructor for an option with a given timeout.

Method Summary

Modifier and Type	Method	Description
OptionalInt	getTimeout()	Returns the timeout.
Optional<Duration>	getTimeoutDuration()	Returns the timeout as a Duration.

Methods inherited from class org.xbill.DNS.EDNSOption

equals, fromWire, getCode, hashCode, toString, toWire

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

TcpKeepaliveOption

public TcpKeepaliveOption()

Constructor for an option with no timeout

TcpKeepaliveOption

public TcpKeepaliveOption(int t)

Constructor for an option with a given timeout.

Parameters:

t - the timeout time in 100ms units, may not be negative or larger than 65535

TcpKeepaliveOption

public TcpKeepaliveOption(Duration t)

Constructor for an option with a given timeout. As the timeout has a coarser granularity than the Duration class, values are rounded down.

Parameters:

t - the timeout time, must not be negative and must be lower than 6553.5 seconds

Method Details

getTimeout

public OptionalInt getTimeout()

Returns the timeout.

Returns:

the timeout in 100ms units

getTimeoutDuration

public Optional<Duration> getTimeoutDuration()

Returns the timeout as a Duration.

Returns:

the timeout