424 Views 2 Replies
      Latest reply: Feb 27, 2017 6:32 AM by pgreemclaren RSS
      pgreemclaren Level 1 Level 1 (0 points)
      pgreemclaren Feb 20, 2017 7:45 AM

        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

        • Re: Captive Network Assistant Failing Sierra
          eskimo Apple Staff Apple Staff (6,675 points)
          eskimo Feb 20, 2017 1:42 PM (in response to pgreemclaren)

          Could anyone shed any light on what I'm seeing?

          If I’m reading this correctly, this problem shows up with just the base system installed; that is, you’re not actually writing any code (you’re definitely not writing a hotspot helper app, because this is macOS, which doesn’t support NEHotspotHelper).  If so, this seems like a bug to me, and I recommend that you file it as such.

          Please post your bug number, just for the record.

          Share and Enjoy
          —
          Quinn “The Eskimo!”
          Apple Developer Relations, Developer Technical Support, Core OS/Hardware
          let myEmail = "eskimo" + "1" + "@apple.com"

            • Re: Captive Network Assistant Failing Sierra
              pgreemclaren Level 1 Level 1 (0 points)
              pgreemclaren Feb 27, 2017 6:32 AM (in response to eskimo)

              Hi Quinn,

               

              Thanks for the reply.

               

              I had a go at reproducing the issue on a few other Macs with no luck.

               

              In order to close this thread off nicely, I have found my culprit.

               

              It turns out that our IT department had helpfully installed Cisco's AnyConnect suite for me to use our VPN.

               

              With the Cisco daemons running during the connection process the issue described above occurs.

               

              If they're disabled all is well and the portal loads correctly.

               

              Bug report averted :-)

               

              Thanks,

               

              Phil