July 2013 - Macnetworkprog - lists.apple.com

Re: How quick does the reachability API respond?
by Jens Alfke 23 Jul '13

23 Jul '13

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How quick does the reachability API respond?
by Rick Mann 23 Jul '13

23 Jul '13

I've got an iPad app that only tries to do network activities if it can the server. In one use case, it connects to our peripheral over wifi (and then doesn't have Internet access), and then later, when you switch to "real" wifi, it starts uploading stuff. I test this by going to Settings, changing the wifi connection from our peripheral to "real" wifi, waiting for that to complete (and get a checkmark), and then switching back to the app. But it sits there for a long time (30 seconds) before it gets a callback that the host is reachable. Is it polling infrequently? Is there a way to give it a kick when my app is activated to have that happen sooner? -- Rick _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40list… This email sent to site_archiver(a)lists.apple.com

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Re: iOS reachability
by Rick Mann 12 Jul '13

12 Jul '13

Interestingly, this is now working as expected. Not sure what was going on last night, but I couldn't get it to behave. On Jul 10, 2013, at 23:28 , Rick Mann <rmann(a)latencyzero.com> wrote: > I'm working on an iPad app to control a device. In one possible configuration, the device hosts a Wi-Fi network and the user connects the iPad to it. The device has a DHCP server and provides an IP address and subnet mask to the iPad, but does not provide a Router or DNS or other information. We are able to successfully make TCP connections to the device over Wi-Fi. > > If the iPad also has a cellular data plan, we want to connect to our server (this is a server in the cloud, not the device) via that cellular data connection. But the SCNetworkReachabilityFlags I get back are 0 (unreachable, not WWAN). Attempts to connect to our server fail. Attempts to use Safari to connect to the internet fail. > > Is there something about what our device is providing via Wi-Fi that prevents the iPad from figuring out how to route traffic? Is it not possible to split network operations this way? I thought it could do this, and this is critical to our product's ease of use. > > -- > Rick > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Macnetworkprog mailing list (Macnetworkprog(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/macnetworkprog/rmann%40latencyzero.… > > This email sent to rmann(a)latencyzero.com -- Rick _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40list… This email sent to site_archiver(a)lists.apple.com

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iOS reachability
by Rick Mann 11 Jul '13

11 Jul '13

I'm working on an iPad app to control a device. In one possible configuration, the device hosts a Wi-Fi network and the user connects the iPad to it. The device has a DHCP server and provides an IP address and subnet mask to the iPad, but does not provide a Router or DNS or other information. We are able to successfully make TCP connections to the device over Wi-Fi. If the iPad also has a cellular data plan, we want to connect to our server (this is a server in the cloud, not the device) via that cellular data connection. But the SCNetworkReachabilityFlags I get back are 0 (unreachable, not WWAN). Attempts to connect to our server fail. Attempts to use Safari to connect to the internet fail. Is there something about what our device is providing via Wi-Fi that prevents the iPad from figuring out how to route traffic? Is it not possible to split network operations this way? I thought it could do this, and this is critical to our product's ease of use. -- Rick _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40list… This email sent to site_archiver(a)lists.apple.com

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Re: L2TP and 'Send all traffic over VPN Connection'
by Arun R 07 Jul '13

07 Jul '13

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L2TP and 'Send all traffic over VPN Connection'
by Arun R 07 Jul '13

07 Jul '13

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