Specifying http:// for DCM enpoint fails ungracefully when 80 is not open

[igable]

~/Projects/Java/Test_API$ dcm-list-servers
Traceback (most recent call last):
  File "/usr/local/bin/dcm-list-servers", line 54, in <module>
    results = Server.all(region_id=cmd_args.region)
  File "/usr/local/lib/python2.7/site-packages/mixcoatl/infrastructure/server.py", line 598, in all
    raise ServerException(r.last_error)
mixcoatl.infrastructure.server.ServerException: Internal error trying to retrieve pagination page.
45.18.37.41:~/Projects/Java/Test_API$