Fix network echo test host scripts for Mac

[bulislaw]

Status

READY

It seems that the 0 aka 'any port' doesn't work well on Mac, causing
[Errno 49] Can't assign requested address errors.

[1481634494.19][HTST][ERR] something went wrong in event main loop!
[1481634494.19][HTST][INF] ==== Traceback start ====
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/mbed_host_tests/host_tests_runner/host_test_default.py", line 364, in run_test
    callbacks[key](key, value, timestamp)
  File "/Users/barsza01/devel/mbed/code/mbed-os/features/FEATURE_LWIP/TESTS/mbedmicro-net/host_tests/udp_echo_client.py", line 104, in _callback_target_ip
    self.SERVER_IP = self.find_interface_to_target_addr(self.target_ip)
  File "/Users/barsza01/devel/mbed/code/mbed-os/features/FEATURE_LWIP/TESTS/mbedmicro-net/host_tests/udp_echo_client.py", line 58, in find_interface_to_target_addr
    s.connect((target_ip, 0)) # Target IP, Any port
  File "/usr/local/Cellar/python/2.7.12_2/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
error: [Errno 49] Can't assign requested address

This PR makes connection to a random port (8000) to get the local if address.

CC: @geky @bridadan

[geky]

Is it possible to fall back to 8000 only after the exception? This patch prevents multiple network tests from running in parallel on the same machine.

Guess:

try:
    s.connect((target_ip, 0))
except socket.error:
    s.connect((target_ip, 8000))

[bulislaw]

Fixed now.

[bridadan]

retest uvisor

[bridadan]

/morph test-nightly

[mbed-bot]

Result: FAILURE

Your command has finished executing! Here's what you wrote!

/morph test-nightly

Output

mbed Build Number: 1263

Test failed!

[bridadan]

Maintainers: please hold off on restarting tests for this, I added a new platform to the CI and it caused the failure. I will restart this when I've resolved the problem.

[bridadan]

/morph test-nightly

[mbed-bot]

Result: SUCCESS

Your command has finished executing! Here's what you wrote!

/morph test-nightly

Output

mbed Build Number: 1264

All builds and test passed!

[0xc0170]

@marhil01 The failure for pr-head : 18:10:20 [8023] | interface_up_down | fail | dut1 cmd: 'ifconfig eth0 down' | | 16.850091 | . I have seen this before, is this related to this patch (I don't think so as this patch is touching test scripts?) or instability somewhere?

[bridadan]

retest uvisor

[bridadan]

cc @VeliMattiLahtela about the CI failure.

[jupe]

most probably this PR based too old mbed-os baseline which has bugs and that why some tests fails now. Especially this fix is now missing: #3193. Please rebase/merge against master head to see if last ci passes.

[bridadan]

@bulislaw would you mind rebasing this on top of master to confirm @jupe's suggestion?

@jupe, ideally the Oulu CI would merge this PR into the latest master of mbed-os, then run all of its tests. That's what we do on the rest of our CI setups. This has helped us move quickly and reduce the number of rebases that contributors have to do. Do you think this would be possible?

[bulislaw]

Done

[0xc0170]

Thanks @jupe for the tip. All green !

[0xc0170]

/morph test-nightly

[mbed-bot]

Result: SUCCESS

Your command has finished executing! Here's what you wrote!

/morph test-nightly

Output

mbed Build Number: 1271

All builds and test passed!