Hi,
I've been having issues with the macOS Sierra Captive Network Assistant, failing to load a page.
Reading the console log it reports a TCP connection error 1:57, potentially related to this thread: Re: TIC Read Error 1:57
Looking at the console log the following series of errors appear:
error
11:50:51.118964 +0000
Captive Network Assistant
TIC Read Error [3:0x608000387ec0]: 1:57
default
11:50:51.119003 +0000
Captive Network Assistant
TIC TCP Conn Cancel [3:0x608000387ec0]
default
11:50:51.119083 +0000
Captive Network Assistant
TIC TCP Conn Destroyed [3:0x608000387ec0]
error
11:50:51.119189 +0000
Captive Network Assistant
HTTP load failed (error code: -1005 [4:-4])
error
11:50:51.119237 +0000
Captive Network Assistant
NSURLConnection finished with error - code -1005
Following that it reports that NSURLConnection finished with error code -1005 which a little searching reveals means "The network connection was lost.".
The end result is an error message displayed to the user "A problem occurred" in the CNA dialog.
If I watch the exchange with the webserver in Wireshark I see nothing unusual, the request is made, content returned and connection closed with a FIN from both client and server.
I've found a few other references to the dialog I've seen in the forum: https://discussions.apple.com/thread/7802525?start=0&tstart=0
My only solution at the moment is to whitelist the address that the CNA uses to detect the presence of the portal, disabling it - which isn't ideal from a usability point of view.
Could anyone shed any light on what I'm seeing?
Thanks,
Phil