Sample Code
OSX Driver and Kext Samples/ SRVResolver/ SRVResolver/ main.m/
/* File: main.m Contains: A simple test program for the SRVResolver class. Written by: DTS Copyright: Copyright (c) 2010-2012 Apple Inc. All Rights Reserved. Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc. ("Apple") in consideration of your agreement to the following terms, and your use, installation, modification or redistribution of this Apple software constitutes acceptance of these terms. If you do not agree with these terms, please do not use, install, modify or redistribute this Apple software. In consideration of your agreement to abide by the following terms, and subject to these terms, Apple grants you a personal, non-exclusive license, under Apple's copyrights in this original Apple software (the "Apple Software"), to use, reproduce, modify and redistribute the Apple Software, with or without modifications, in source and/or binary forms; provided that if you redistribute the Apple Software in its entirety and without modifications, you must retain this notice and the following text and disclaimers in all such redistributions of the Apple Software. Neither the name, trademarks, service marks or logos of Apple Inc. may be used to endorse or promote products derived from the Apple Software without specific prior written permission from Apple. Except as expressly stated in this notice, no other rights or licenses, express or implied, are granted by Apple herein, including but not limited to any patent rights that may be infringed by your derivative works or by other works in which the Apple Software may be incorporated. The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "SRVResolver.h" @interface Main : NSObject <SRVResolverDelegate> - (BOOL)runWithSRVName:(NSString *)srvName; @end @interface Main () @property (nonatomic, strong, readwrite) SRVResolver * resolver; @end @implementation Main - (void)dealloc { [self->_resolver stop]; } @synthesize resolver = _resolver; - (BOOL)runWithSRVName:(NSString *)srvName // The Objective-C 'main' for this program. It creates a SRVResolver object // and runs the runloop, allowing it to issue the query and receive the reply. { assert(self.resolver == nil); self.resolver = [[SRVResolver alloc] initWithSRVName:srvName]; assert(self.resolver != nil); if (NO) { self.resolver.delegate = self; } [self.resolver start]; while ( ! self.resolver.isFinished ) { [[NSRunLoop currentRunLoop] runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]]; } if (self.resolver.error == nil) { NSLog(@"Priority Weight Target:Port"); NSLog(@"-------- ------ -----------"); for (NSDictionary * result in self.resolver.results) { NSLog( @"%8d %8d %@:%d", [[result objectForKey:kSRVResolverPriority] intValue], [[result objectForKey:kSRVResolverWeight ] intValue], [result objectForKey:kSRVResolverTarget], [[result objectForKey:kSRVResolverPort ] intValue] ); } } else { NSLog(@"error = %@", self.resolver.error); } return (self.resolver.error == nil); } - (void)srvResolver:(SRVResolver *)resolver didReceiveResult:(NSDictionary *)result // An SRVResolver delegate callback. See the "SRVResolver.h" for details. { assert(resolver == self.resolver); #pragma unused(resolver) assert(result != nil); NSLog(@"didReceiveResult %@", result); } - (void)srvResolver:(SRVResolver *)resolver didStopWithError:(NSError *)error // An SRVResolver delegate callback. See the "SRVResolver.h" for details. { assert(resolver == self.resolver); #pragma unused(resolver) NSLog(@"didStopWithError %@", error); } @end // A good address to test this with is: // // _xmpp-server._tcp.gmail.com // // See the read me for a specific example. int main(int argc, char* argv[]) { #pragma unused(argc) #pragma unused(argv) int retVal; BOOL success; Main * mainObj; @autoreleasepool { retVal = EXIT_FAILURE; if (argc == 2) { mainObj = [[Main alloc] init]; assert(mainObj != nil); success = [mainObj runWithSRVName:[NSString stringWithUTF8String:argv[1]]]; if (success) { retVal = EXIT_SUCCESS; } } else { fprintf(stderr, "usage: %s name\n", getprogname()); } } return retVal; }
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