#import <Foundation/Foundation.h>
#import <Network/Network.h>

typedef void (^RecvPacketHandler)(NSData * _Nonnull packetData, NSString * _Nonnull remoteEndpoint);
typedef void (^SendCompletionHandler)(NSError * _Nonnull error);

@interface UDPListener : NSObject
{

@private

	RecvPacketHandler									_recvPacketHandler;
	NSMutableDictionary<NSString *, nw_connection_t> *	_childConnections;
}

@property (nonatomic, retain, nullable)	nw_listener_t				listener;
@property (nonatomic, retain, nullable)	dispatch_queue_t			queue;

- (nullable instancetype)init;
- (nullable instancetype)initWithQueue:(dispatch_queue_t __nullable)queue;

- (void)startListening:(uint16_t)port packetHandler:(nonnull RecvPacketHandler)packetHandler;
- (void)stopListening;

- (void)sendPacket:(nonnull NSData *)packetData toEndpoint:(nonnull NSString *)remoteEndpoint
		completionHandler:(nullable SendCompletionHandler)completionHandler;

@end // UDPListener