Experimental Physics and
Industrial Control System

My attempt to fix epicsSocketEnableAddressUseForDatagramFanout() on vxWorks (which still needs confirmation)
and RTEMS had a side-effect on Linux where it seems that SO_REUSEADDR
and SO_REUSEPORT have the same effect, but are not interchangeable.

iocanj> osiSockTest
1..18
ok  1 - osiSockAttach
ok  2 - epicsSocketCreate INET, DGRAM, 0
ok  3 - setsockopt BROADCAST := 1
ok  4 - getsockopt BROADCAST => 1
ok  5 - setsockopt BROADCAST := 0
ok  6 - getsockopt BROADCAST => 0
ok  7 - setsockopt MULTICAST_LOOP := 1
ok  8 - getsockopt MULTICAST_LOOP => 1
ok  9 - setsockopt MULTICAST_LOOP := 0
ok 10 - getsockopt MULTICAST_LOOP => 0
ok 11 - setsockopt IP_MULTICAST_TTL := 1
ok 12 - getsockopt IP_MULTICAST_TTL => 1
ok 13 - setsockopt IP_MULTICAST_TTL := 0
not ok 14 - getsockopt IP_MULTICAST_TTL => 1
# First test if epicsSocketEnableAddressUseForDatagramFanout() is necessary
ok 15 - bind() to port 50463
ok 16 - bind() to 50463 error -1, 48
# Now the real test
ok 17 - bind() to port 50463
not ok 18 - bind() to 50463 error -1, 48

    Results
    =======
       Tests: 18
      Passed:  16 = 88.89%
      Failed:   2 = 11.11%
iocanj> puts strerror(48)
S_errno_EADDRINUSE
value = 10 = 0xa

-- 
Complexity comes for free, Simplicity you have to work for.

Replies:

Re: Weird CAS hangup on IOC Michael Davidsaver via Core-talk

References:

Weird CAS hangup on IOC Ralph Lange via Core-talk

Re: Weird CAS hangup on IOC Michael Davidsaver via Core-talk

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