RTS_SOCKET_SO_VALUE_TCP_KEEPALIVE (STRUCT)ΒΆ

TYPE RTS_SOCKET_SO_VALUE_TCP_KEEPALIVE : STRUCT

Parameters for the socket option SOCKET_SO_KEEPALIVE.
NOTE: If one of the parameters is not supported, the result of SysSockSetOption() is ERR_NOT_SUPPORTED. In this case, the corresponding result of the option contains the error result.
InOut:

Name

Type

Comment

bOn

DINT

1=Enable keepalive, 0=Disable

probes

UDINT
The number of unacknowledged probes to send before considering the connection dead and notifying the application layer.
NOTE: Is not supported by every platform!

probesResult

RTS_IEC_RESULT

Error code for the probes parameter. Returns ERR_NOT_SUPPORTED, if option is not available on the target.

timeout

DINT

Specifies the timeout in milliseconds with no activity until the first keep-alive packet is sent.

timeoutResult

RTS_IEC_RESULT

Error code for the timeout parameter. Returns ERR_NOT_SUPPORTED, if option is not available on the target

interval

DINT

Specifies the interval in milliseconds between when successive keep-alive packets are sent if no acknowledgement is received.

intervalResult

RTS_IEC_RESULT

Error code for the interval parameter. Returns ERR_NOT_SUPPORTED, if option is not available on the target.