Re: NSNetService, IP address and port number

FROM : j o a r
DATE : Thu Jan 16 23:12:36 2003

You can do something like this to get the address from the NSData:

#import <netinet/in.h>
#import <arpa/inet.h>

+ (NSString *) addressFromData:(NSData *) addressData
{
    NSString *adr = nil;

    if (addressData != nil)
    {
   struct sockaddr_in addrIn = *(struct sockaddr_in *)[addressData bytes];
   adr = [NSString stringWithFormat: @"%s", inet_ntoa(addrIn.sin_addr)];
    }

    return adr;
}

+ (NSString *) portFromData:(NSData *) addressData
{
    NSString *port = nil;

    if (addressData != nil)
    {
   struct sockaddr_in addrIn = *(struct sockaddr_in *)[addressData bytes];
   port = [NSString stringWithFormat: @"%s", inet_ntoa(addrIn.sin_port)];
    }

    return port;
}

("Programmed" in Mail, so watch out for typos...)

j o a r


On Thursday, Jan 16, 2003, at 22:16 Europe/Stockholm, kubernan wrote:

> I think i have to use something like [aNetService adresses] and read
> the returned array,
> but i don't know how to use the NSData item of the array with the
> sockaddr structure
> for reading the ip address and port number.

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