Thanks, yes its a tcp port. I tried this but for some reason "port" is always
nil.
NSSocketPort *port = [[NSSocketPort alloc] initRemoteWithTCPPort:3651
host:@"localhost"];
if(!port) {
NSLog(@"Port is open...");
} else {
NSLog(@"Port is not open...");
}
[port release];
Thanks,
tom
On Nov 7, 2010, at 1:44 PM, Dave Carrigan wrote:
> On Nov 7, 2010, at 1:35 PM, Tom Jones wrote:
>
>> I'm looking for a simple way to ping a host and a specific port on that
>> host. I have SCNetworkCheckReachabilityByName working just fine but I really
>> need to test to see if the port is active.
>
>
> ICMP (ping) doesn't use ports. I assume you actually want to determine if a
> host is listening on a TCP or UDP port. Actually, there is no real way to
> know if a host is listening on a UDP port unless you also know what
> particular kind of service is associated with that port and know what to look
> for when a host receives UDP packets on the port in question. So most likely
> you mean a TCP port. For that, a combination of socket(2) and connect(2)
> should tell you what you need to know.
>
> --
> Dave Carrigan
> d...@rudedog.org
> Seattle, WA, USA
>
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