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Re: Checking for internet connection?
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Re: Checking for internet connection?


  • Subject: Re: Checking for internet connection?
  • From: Ben Dougall <email@hidden>
  • Date: Sat, 14 Oct 2006 22:06:56 +0100


On Saturday, October 14, 2006, at 10:00 pm, Shawn Erickson wrote:


On Oct 14, 2006, at 1:11 PM, Ben Dougall wrote:


On Saturday, October 14, 2006, at 08:50 pm, j o a r wrote:


On 14 okt 2006, at 21.37, Ben Dougall wrote:

I'm trying to find out how to get the information that the Internet Connect app has access to and displays, specifically "connected"/"disconnected" plus the speed and time in seconds connected.

But that status is for "transient" connections (like a modem connection), right? I think (by looking at the API, I haven't tried it) that you can use the System Configuration APIs for some of that, at least the connected / disconnected state,

I can't see one that does that. The closest two functions that I know of, SCNetworkCheckReachabilityByAddress and SCNetworkCheckReachabilityByName, require a particular host to try rather than just saying yes connected, or no not connected.

<http://developer.apple.com/documentation/Networking/Conceptual/ SystemConfigFrameworks/SC_ReachConnect/chapter_5_section_5.html>


-Shawn

Thanks but that's the page I talked about to start with:

On Saturday, October 14, 2006, at 12:56  pm, Ben Dougall wrote:

From a while back on this list:

On 2/17/06 9:24 AM, "Paul J. Lucas" <email@hidden> wrote:
Is there any way to check to see if there is an active internet
connection?

- Paul

On Friday, February 17, 2006, at 05:41 pm, Greg Herlihy wrote:
I'm not sure about a Cocoa API, but Core Foundation's System Configuration
Framework's "Reachability" API can tell you:


http://developer.apple.com/documentation/Networking/Conceptual/ SystemConfigF
rameworks/SC_ReachConnect/chapter_5_section_4.html


Greg


The two functions on that page, SCNetworkCheckReachabilityByAddress and SCNetworkCheckReachabilityByName (regarding pre 10.3), checks the availability of another external host. That's really the best way to see if the computer has a connection? Check to see if say Amazon are contactable and from that assume that the machine you're on has a connection? That's really crap I reckon. Surely there's a reasonable way to find out if the machine is currently connected to the net or not (OS X 10.2+)?

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