server fails when starting via proxy with no stderr error

[Antoine Martin]

Reported on IRC with Fedora 26:

Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/xpra/scripts/main.py", line 175, in main
    return run_mode(script_file, err, options, args, mode, defaults)
  File "/usr/lib64/python2.7/site-packages/xpra/scripts/main.py", line 1494, in run_mode
    return run_server(error_cb, options, mode, script_file, args, current_display)
  File "/usr/lib64/python2.7/site-packages/xpra/scripts/server.py", line 583, in run_server
    + ("  %s\n" % log_filename0))
IOError: [Errno 32] Broken pipe

I don't understand:

• why it can't write to stderr at that point
• why I'm not able to reproduce it

[Antoine Martin]

@shimm: does r17882 help?

[Antoine Martin]

would need steps to reproduce