pfSense

I have just upgraded from 2.1 to 2.1.3 and now have this issue too. pfSense is configured to use an external proxy server in System: Advanced: Miscellaneous. The Proxy URL is of the form http://proxy.lan and the proxy port is set to 3128, the local squid proxy. That worked fine in 2.1 for both pfsense updates (I used it to upgrade to 2.1.3) and package lists and installation. Now I can still see the pfSense version update status on the System Information widget. But the Available Packages page gives this message:
Unable to communicate with https://packages.pfsense.org. Please verify DNS and interface configuration, and that pfSense has functional Internet connectivity.

Checking the logs on the squid proxy server, I see the following log for the pfSense version update status check:

1400767651.268      0 192.168.1.1 TCP_MEM_HIT/200 389 GET http://updates.pfsense.org/_updaters/amd64/version - NONE/- application/octet-stream

Checking for available packages shows the following proxy logs:

1400767664.876      0 192.168.1.1 NONE/501 2052 POST NONE://packages.pfsense.org:443/xmlrpc.php - NONE/- text/html
1400767667.873      0 192.168.1.1 NONE/501 2053 POST NONE://packages.pfsense.org:443/xmlrpc.php - NONE/- text/html

The thing that stands out for me there is the protocol type of NONE. I can't recall what all the squid log fields are, but surely the NONE:// should be https:// ??

I made the change to /etc/inc/globals.inc mentioned in the Bug Description and can successfully see the Available Packages. These are the squid proxy logs from that session:

1400768708.590      0 192.168.1.1 TCP_MEM_HIT/200 389 GET http://updates.pfsense.org/_updaters/amd64/version - NONE/- application/octet-stream
1400768777.921      0 192.168.1.1 NONE/501 2052 POST NONE://packages.pfsense.org:443/xmlrpc.php - NONE/- text/html
1400768780.982      0 192.168.1.1 NONE/501 2053 POST NONE://packages.pfsense.org:443/xmlrpc.php - NONE/- text/html
1400769199.880    512 192.168.1.1 TCP_MISS/200 1834 POST http://packages.pfsense.org/xmlrpc.php - DIRECT/208.123.73.88 text/html

I then went on to re-install nmap successfully. Here are the logs:

1400769501.671    516 192.168.1.1 TCP_MISS/200 2611 POST http://packages.pfsense.org/xmlrpc.php - DIRECT/208.123.73.88 text/html
1400769502.875   1195 192.168.1.1 TCP_MISS/200 11227 CONNECT packages.pfsense.org:443 - DIRECT/208.123.73.88 -
1400769511.064   7838 192.168.1.1 TCP_MISS/200 6083396 CONNECT files.pfsense.org:443 - DIRECT/208.123.73.81 -

And there we see that I've downloaded the package via https anyway.