Classes/BonjourWebAppDelegate.m

/*
 
    File: BonjourWebAppDelegate.m 
Abstract:  The application delegate.
It creates the BonjourBrowser (a navigation controller) and is the delgate for
that BonjourBrowser.
When it gets the delegate callback, it constructs a URL and launches that URL
in Safari.
 
 Version: 2.9 
 
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*/
 
#import "BonjourWebAppDelegate.h"
#import "BonjourBrowser.h"
 
 
#define kWebServiceType @"_http._tcp"
#define kInitialDomain  @"local"
 
 
@implementation BonjourWebAppDelegate
 
@synthesize window;
@synthesize browser;
 
 
- (void)applicationDidFinishLaunching:(UIApplication *)application {
    // Create the Bonjour Browser for Web services
    BonjourBrowser *aBrowser = [[BonjourBrowser alloc] initForType:kWebServiceType
                                                          inDomain:kInitialDomain
                                                  customDomains:nil // we won't save any additional domains added by the user
                                       showDisclosureIndicators:NO
                                               showCancelButton:NO];
    self.browser = aBrowser;
    [aBrowser release];
 
    self.browser.delegate = self;
    
    // We want to let the user know that the services list is dynamic and always updating, even when there are no
    // services currently found.
    self.browser.searchingForServicesString = NSLocalizedString(@"Searching for web services", @"Searching for web services string");
 
    // Add the controller's view as a subview of the window
    [self.window addSubview:[self.browser view]];
}
 
 
- (void)dealloc {
    [browser release];
    [window release];
    [super dealloc];
}
 
 
- (NSString *)copyStringFromTXTDict:(NSDictionary *)dict which:(NSString*)which {
    // Helper for getting information from the TXT data
    NSData* data = [dict objectForKey:which];
    NSString *resultString = nil;
    if (data) {
        resultString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
    }
    return resultString;
}
 
 
- (void) bonjourBrowser:(BonjourBrowser*)browser didResolveInstance:(NSNetService*)service {
    // Construct the URL including the port number
    // Also use the path, username and password fields that can be in the TXT record
    NSDictionary* dict = [[NSNetService dictionaryFromTXTRecordData:[service TXTRecordData]] retain];
    NSString *host = [service hostName];
    
    NSString* user = [self copyStringFromTXTDict:dict which:@"u"];
    NSString* pass = [self copyStringFromTXTDict:dict which:@"p"];
    
    NSString* portStr = @"";
    
    // Note that [NSNetService port:] returns an NSInteger in host byte order
    NSInteger port = [service port];
    if (port != 0 && port != 80)
            portStr = [[NSString alloc] initWithFormat:@":%d",port];
    
    NSString* path = [self copyStringFromTXTDict:dict which:@"path"];
    if (!path || [path length]==0) {
            [path release];
            path = [[NSString alloc] initWithString:@"/"];
    } else if (![[path substringToIndex:1] isEqual:@"/"]) {
            NSString *tempPath = [[NSString alloc] initWithFormat:@"/%@",path];
            [path release];
            path = tempPath;
    }
    
    NSString* string = [[NSString alloc] initWithFormat:@"http://%@%@%@%@%@%@%@",
                                                user?user:@"",
                                                pass?@":":@"",
                                                pass?pass:@"",
                                                (user||pass)?@"@":@"",
                                                host,
                                                portStr,
                                                path];
    
    NSURL *url = [[NSURL alloc] initWithString:string];
    [[UIApplication sharedApplication] openURL:url];
    
    [url release];
    [string release];
    [portStr release];
    [pass release];
    [user release];
    [dict release];
    [path release];
}
 
@end