Attribute error setting keepalive on macosx

[bobmcnamara]

The keepalive code for TCPIPInstrVxi11 and TCPIPSocketSession is broken on OSX. Specifically, socket.TCP_KEEPIDLE doesn't exist on OSX.

Here is the code I tried to run:

import pyvisa
from pyvisa.constants import ResourceAttribute

rm = pyvisa.ResourceManager("@py")
scope = rm.open_resource("TCPIP::192.168.1.9::INSTR")
scope.set_visa_attribute(ResourceAttribute.tcpip_keepalive, True)

Here is the error:

AttributeError: module 'socket' has no attribute 'TCP_KEEPIDLE'

See https://stackoverflow.com/questions/12248132/how-to-change-tcp-keepalive-timer-using-python-script for more details.

[abunimeh]

on macOS it is TCP_KEEPALIVE

[bobmcnamara]

Here is the offending code:

            if attribute_state is True:
                self.interface.sock.setsockopt(
                    socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1
                )
                self.interface.sock.setsockopt(
                    socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, 60
                )
                self.interface.sock.setsockopt(
                    socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, 60
                )
                self.interface.sock.setsockopt(
                    socket.IPPROTO_TCP, socket.TCP_KEEPCNT, 5
                )
                self.keepalive = True

The problem is that on macOS, the socket module has no attribute TCP_KEEPIDLE.