Network connectivity check pings network location, not hostname

The Ubuntu Software Center attempts to ping the repository host on startup to check for internet connectivity (when NetworkManager is not present). However, the software-center uses the complete network location (urlparse's netloc) as the ping destination - which causes problems if the location contains a port component (or basic authentication).

For example, our repository url is http://apt.mr.lan:3142/ubuntu. When we start software-center, it attempts to ping "apt.mr.lan:3142", which fails, and so the Install button is grayed out.

Log output:
INFO - Attempting one time ping of apt.mr.lan:3142 to test if internet connectivity exists.

The following patch uses urlparse's hostname instead of netloc (also attached):

--- netstatus.py.org 2012-08-03 05:27:37.913582505 +0000
+++ netstatus.py 2012-08-03 05:44:54.645406601 +0000
@@ -145,7 +145,7 @@
         NETWORK_STATE = NetState.NM_STATE_DISCONNECTED
     else:
         # get a host to ping
- host = urlparse(source_list.list[0].uri)[1]
+ host = urlparse(source_list.list[0].uri).hostname
         msg = ("Attempting one time ping of %s to test if internet "
                "connectivity exists." % host)
         logging.info(msg)

After applying patch:
INFO - Attempting one time ping of apt.mr.lan to test if internet connectivity exists.

== OS and package versions ==

# lsb_release -rd
Description: Ubuntu 12.04 LTS
Release: 12.04

# apt-cache policy software-center
software-center:
  Installed: 5.2.4
  Candidate: 5.2.4