objc-stomp/WebSocket is a simple STOMP client that works over WebSocket. It is an adaptation of the TCP-socket-based objc-stomp library (which in-turn uses the AsyncSocket library.)

Add CRVStompClient.{h,m} to your project, and add the library SocketRocket.

#import <Foundation/Foundation.h>
@class CRVStompClient;
@protocol CRVStompClientDelegate;
@interface MyExample : NSObject<CRVStompClientDelegate> {
	@private
	CRVStompClient *service;
}
@property(nonatomic, retain) CRVStompClient *service;
@end

#define kUsername	@"USERNAME"
#define kPassword	@"PASS"
#define kQueueName	@"/topic/systemMessagesTopic"
[...]
-(void) aMethod {
	CRVStompClient *s = [[CRVStompClient alloc]
			initWithHost:@"localhost"
					port:61613
					login:kUsername
				passcode:kQueueName
				delegate:self];
	[s connect];
	NSDictionary *headers = [NSDictionary dictionaryWithObjectsAndKeys:
			@"client", @"ack",
			@"true", @"activemq.dispatchAsync",
			@"1", @"activemq.prefetchSize", nil];
	[s subscribeToDestination:kQueueName withHeader: headers];
	[self setService: s];
	[s release];
}
#pragma mark CRVStompClientDelegate
- (void)stompClientDidConnect:(CRVStompClient *)stompService {
		NSLog(@"stompServiceDidConnect");
}
- (void)stompClient:(CRVStompClient *)stompService messageReceived:(NSString *)body withHeader:(NSDictionary *)messageHeader {
	NSLog(@"gotMessage body: %@, header: %@", body, messageHeader);
	NSLog(@"Message ID: %@", [messageHeader valueForKey:@"message-id"]);
	// If we have successfully received the message ackknowledge it.
	[stompService ack: [messageHeader valueForKey:@"message-id"]];
}
- (void)dealloc {
	[service unsubscribeFromDestination: kQueueName];
	[service release];
	[super dealloc];
}