iPhone: Bonjour NSNetService IP address and port

Question

Excuse my iPhone/Objective-C newbie status please!

I\'ve found my HTTP server using NSNetServiceBrowser, but now I just want the IP address and port of the service found

Answer 1

Remix of the accepted answer in a category:

NSNetService+Util.h

#import 

@interface NSNetService (Util)

- (NSArray*) addressesAndPorts;

@end


@interface AddressAndPort : NSObject 

@property (nonatomic, assign) int port;
@property (nonatomic, strong)  NSString *address;

@end

NSNetService+Util.m

#import "NSNetService+Util.h"
#include 

@implementation NSNetService (Util)

- (NSArray*) addressesAndPorts {

    // this came from http://stackoverflow.com/a/4976808/8047
    NSMutableArray *retVal = [NSMutableArray array];
    char addressBuffer[INET6_ADDRSTRLEN];

    for (NSData *data in self.addresses)
    {
        memset(addressBuffer, 0, INET6_ADDRSTRLEN);

        typedef union {
            struct sockaddr sa;
            struct sockaddr_in ipv4;
            struct sockaddr_in6 ipv6;
        } ip_socket_address;

        ip_socket_address *socketAddress = (ip_socket_address *)[data bytes];

        if (socketAddress && (socketAddress->sa.sa_family == AF_INET || socketAddress->sa.sa_family == AF_INET6))
        {
            const char *addressStr = inet_ntop(
                                               socketAddress->sa.sa_family,
                                               (socketAddress->sa.sa_family == AF_INET ? (void *)&(socketAddress->ipv4.sin_addr) : (void *)&(socketAddress->ipv6.sin6_addr)),
                                               addressBuffer,
                                               sizeof(addressBuffer));

            int port = ntohs(socketAddress->sa.sa_family == AF_INET ? socketAddress->ipv4.sin_port : socketAddress->ipv6.sin6_port);

            if (addressStr && port)
            {
                AddressAndPort *aAndP = [[AddressAndPort alloc] init];
                aAndP.address = [NSString stringWithCString:addressStr encoding:kCFStringEncodingUTF8];
                aAndP.port = port;
                [retVal addObject:aAndP];
            }
        }
    }
    return retVal;

}


@end


@implementation AddressAndPort
@end

[Yes, I have no fear of creating lots of NSObject instances...]