MultipeerConnectivity Changes for Objective-C

MultipeerConnectivity

MCAdvertiserAssistant.h

	Declaration
From	@property(weak, atomic) id<MCAdvertiserAssistantDelegate> delegate
To	@property(weak, atomic, nullable) id<MCAdvertiserAssistantDelegate> delegate

Modified MCAdvertiserAssistant.discoveryInfo

	Declaration
From	@property(readonly, atomic) NSDictionary *discoveryInfo
To	@property(readonly, atomic, nullable) NSDictionary<NSString ,NSString > *discoveryInfo

Modified -[MCAdvertiserAssistant initWithServiceType:discoveryInfo:session:]

	Declaration
From	- (instancetype)initWithServiceType:(NSString )serviceType discoveryInfo:(NSDictionary )info session:(MCSession *)session
To	- (instancetype _Nonnull)initWithServiceType:(NSString * _Nonnull)serviceType discoveryInfo:(NSDictionary<NSString ,NSString > * _Nullable)info session:(MCSession * _Nonnull)session

Declaration

From

- (instancetype)initWithServiceType:(NSString *)serviceType discoveryInfo:(NSDictionary *)info session:(MCSession *)session

- (instancetype _Nonnull)initWithServiceType:(NSString * _Nonnull)serviceType discoveryInfo:(NSDictionary<NSString *,NSString *> * _Nullable)info session:(MCSession * _Nonnull)session

Modified MCAdvertiserAssistant.serviceType

	Declaration
From	@property(readonly, atomic) NSString *serviceType
To	@property(readonly, atomic, nonnull) NSString *serviceType

Modified MCAdvertiserAssistant.session

	Declaration
From	@property(readonly, atomic) MCSession *session
To	@property(readonly, atomic, nonnull) MCSession *session

Modified -[MCAdvertiserAssistantDelegate advertiserAssistantDidDismissInvitation:]

	Declaration
From	- (void)advertiserAssistantDidDismissInvitation:(MCAdvertiserAssistant *)advertiserAssistant
To	- (void)advertiserAssistantDidDismissInvitation:(MCAdvertiserAssistant * _Nonnull)advertiserAssistant

Modified -[MCAdvertiserAssistantDelegate advertiserAssistantWillPresentInvitation:]

	Declaration
From	- (void)advertiserAssistantWillPresentInvitation:(MCAdvertiserAssistant *)advertiserAssistant
To	- (void)advertiserAssistantWillPresentInvitation:(MCAdvertiserAssistant * _Nonnull)advertiserAssistant

MCBrowserViewController.h

Modified MCBrowserViewController.browser

	Declaration
From	@property(readonly, atomic) MCNearbyServiceBrowser *browser
To	@property(readonly, atomic, nonnull) MCNearbyServiceBrowser *browser

Modified MCBrowserViewController.delegate

	Declaration
From	@property(weak, atomic) id<MCBrowserViewControllerDelegate> delegate
To	@property(weak, atomic, nullable) id<MCBrowserViewControllerDelegate> delegate

Modified -[MCBrowserViewController initWithBrowser:session:]

	Declaration
From	- (instancetype)initWithBrowser:(MCNearbyServiceBrowser )browser session:(MCSession )session
To	- (instancetype _Nonnull)initWithBrowser:(MCNearbyServiceBrowser * _Nonnull)browser session:(MCSession * _Nonnull)session

Declaration

From

- (instancetype)initWithBrowser:(MCNearbyServiceBrowser *)browser session:(MCSession *)session

- (instancetype _Nonnull)initWithBrowser:(MCNearbyServiceBrowser * _Nonnull)browser session:(MCSession * _Nonnull)session

Modified -[MCBrowserViewController initWithServiceType:session:]

	Declaration
From	- (instancetype)initWithServiceType:(NSString )serviceType session:(MCSession )session
To	- (instancetype _Nonnull)initWithServiceType:(NSString * _Nonnull)serviceType session:(MCSession * _Nonnull)session

Declaration

From

- (instancetype)initWithServiceType:(NSString *)serviceType session:(MCSession *)session

- (instancetype _Nonnull)initWithServiceType:(NSString * _Nonnull)serviceType session:(MCSession * _Nonnull)session

Modified MCBrowserViewController.session

	Declaration
From	@property(readonly, atomic) MCSession *session
To	@property(readonly, atomic, nonnull) MCSession *session

Modified -[MCBrowserViewControllerDelegate browserViewController:shouldPresentNearbyPeer:withDiscoveryInfo:]

	Declaration
From	- (BOOL)browserViewController:(MCBrowserViewController )browserViewController shouldPresentNearbyPeer:(MCPeerID )peerID withDiscoveryInfo:(NSDictionary *)info
To	- (BOOL)browserViewController:(MCBrowserViewController * _Nonnull)browserViewController shouldPresentNearbyPeer:(MCPeerID * _Nonnull)peerID withDiscoveryInfo:(NSDictionary<NSString ,NSString > * _Nullable)info

Declaration

From

- (BOOL)browserViewController:(MCBrowserViewController *)browserViewController shouldPresentNearbyPeer:(MCPeerID *)peerID withDiscoveryInfo:(NSDictionary *)info

- (BOOL)browserViewController:(MCBrowserViewController * _Nonnull)browserViewController shouldPresentNearbyPeer:(MCPeerID * _Nonnull)peerID withDiscoveryInfo:(NSDictionary<NSString *,NSString *> * _Nullable)info

Modified -[MCBrowserViewControllerDelegate browserViewControllerDidFinish:]

	Declaration
From	- (void)browserViewControllerDidFinish:(MCBrowserViewController *)browserViewController
To	- (void)browserViewControllerDidFinish:(MCBrowserViewController * _Nonnull)browserViewController

Modified -[MCBrowserViewControllerDelegate browserViewControllerWasCancelled:]

	Declaration
From	- (void)browserViewControllerWasCancelled:(MCBrowserViewController *)browserViewController
To	- (void)browserViewControllerWasCancelled:(MCBrowserViewController * _Nonnull)browserViewController

MCNearbyServiceAdvertiser.h

Modified MCNearbyServiceAdvertiser.delegate

	Declaration
From	@property(weak, atomic) id<MCNearbyServiceAdvertiserDelegate> delegate
To	@property(weak, atomic, nullable) id<MCNearbyServiceAdvertiserDelegate> delegate

Modified MCNearbyServiceAdvertiser.discoveryInfo

	Declaration
From	@property(readonly, atomic) NSDictionary *discoveryInfo
To	@property(readonly, atomic, nullable) NSDictionary<NSString ,NSString > *discoveryInfo

Modified -[MCNearbyServiceAdvertiser initWithPeer:discoveryInfo:serviceType:]

	Declaration
From	- (instancetype)initWithPeer:(MCPeerID )myPeerID discoveryInfo:(NSDictionary )info serviceType:(NSString *)serviceType
To	- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID discoveryInfo:(NSDictionary<NSString ,NSString > * _Nullable)info serviceType:(NSString * _Nonnull)serviceType

Declaration

From

- (instancetype)initWithPeer:(MCPeerID *)myPeerID discoveryInfo:(NSDictionary *)info serviceType:(NSString *)serviceType

- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID discoveryInfo:(NSDictionary<NSString *,NSString *> * _Nullable)info serviceType:(NSString * _Nonnull)serviceType

Modified MCNearbyServiceAdvertiser.myPeerID

	Declaration
From	@property(readonly, atomic) MCPeerID *myPeerID
To	@property(readonly, atomic, nonnull) MCPeerID *myPeerID

Modified MCNearbyServiceAdvertiser.serviceType

	Declaration
From	@property(readonly, atomic) NSString *serviceType
To	@property(readonly, atomic, nonnull) NSString *serviceType

Modified -[MCNearbyServiceAdvertiserDelegate advertiser:didNotStartAdvertisingPeer:]

	Declaration
From	- (void)advertiser:(MCNearbyServiceAdvertiser )advertiser didNotStartAdvertisingPeer:(NSError )error
To	- (void)advertiser:(MCNearbyServiceAdvertiser * _Nonnull)advertiser didNotStartAdvertisingPeer:(NSError * _Nonnull)error

Declaration

From

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didNotStartAdvertisingPeer:(NSError *)error

- (void)advertiser:(MCNearbyServiceAdvertiser * _Nonnull)advertiser didNotStartAdvertisingPeer:(NSError * _Nonnull)error

Modified -[MCNearbyServiceAdvertiserDelegate advertiser:didReceiveInvitationFromPeer:withContext:invitationHandler:]

	Declaration
From	- (void)advertiser:(MCNearbyServiceAdvertiser )advertiser didReceiveInvitationFromPeer:(MCPeerID )peerID withContext:(NSData )context invitationHandler:(void (^)(BOOL accept, MCSession session))invitationHandler
To	- (void)advertiser:(MCNearbyServiceAdvertiser * _Nonnull)advertiser didReceiveInvitationFromPeer:(MCPeerID * _Nonnull)peerID withContext:(NSData * _Nullable)context invitationHandler:(void (^ _Nonnull)(BOOL accept, MCSession * _Nonnull session))invitationHandler

Declaration

From

- (void)advertiser:(MCNearbyServiceAdvertiser *)advertiser didReceiveInvitationFromPeer:(MCPeerID *)peerID withContext:(NSData *)context invitationHandler:(void (^)(BOOL accept, MCSession *session))invitationHandler

- (void)advertiser:(MCNearbyServiceAdvertiser * _Nonnull)advertiser didReceiveInvitationFromPeer:(MCPeerID * _Nonnull)peerID withContext:(NSData * _Nullable)context invitationHandler:(void (^ _Nonnull)(BOOL accept, MCSession * _Nonnull session))invitationHandler

MCNearbyServiceBrowser.h

Modified MCNearbyServiceBrowser.delegate

	Declaration
From	@property(weak, atomic) id<MCNearbyServiceBrowserDelegate> delegate
To	@property(weak, atomic, nullable) id<MCNearbyServiceBrowserDelegate> delegate

Modified -[MCNearbyServiceBrowser initWithPeer:serviceType:]

	Declaration
From	- (instancetype)initWithPeer:(MCPeerID )myPeerID serviceType:(NSString )serviceType
To	- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID serviceType:(NSString * _Nonnull)serviceType

Modified -[MCNearbyServiceBrowser invitePeer:toSession:withContext:timeout:]

	Declaration
From	- (void)invitePeer:(MCPeerID )peerID toSession:(MCSession )session withContext:(NSData *)context timeout:(NSTimeInterval)timeout
To	- (void)invitePeer:(MCPeerID * _Nonnull)peerID toSession:(MCSession * _Nonnull)session withContext:(NSData * _Nullable)context timeout:(NSTimeInterval)timeout

Declaration

From

- (void)invitePeer:(MCPeerID *)peerID toSession:(MCSession *)session withContext:(NSData *)context timeout:(NSTimeInterval)timeout

- (void)invitePeer:(MCPeerID * _Nonnull)peerID toSession:(MCSession * _Nonnull)session withContext:(NSData * _Nullable)context timeout:(NSTimeInterval)timeout

Modified MCNearbyServiceBrowser.myPeerID

	Declaration
From	@property(readonly, atomic) MCPeerID *myPeerID
To	@property(readonly, atomic, nonnull) MCPeerID *myPeerID

Modified MCNearbyServiceBrowser.serviceType

	Declaration
From	@property(readonly, atomic) NSString *serviceType
To	@property(readonly, atomic, nonnull) NSString *serviceType

Modified -[MCNearbyServiceBrowserDelegate browser:didNotStartBrowsingForPeers:]

	Declaration
From	- (void)browser:(MCNearbyServiceBrowser )browser didNotStartBrowsingForPeers:(NSError )error
To	- (void)browser:(MCNearbyServiceBrowser * _Nonnull)browser didNotStartBrowsingForPeers:(NSError * _Nonnull)error

Declaration

From

- (void)browser:(MCNearbyServiceBrowser *)browser didNotStartBrowsingForPeers:(NSError *)error

- (void)browser:(MCNearbyServiceBrowser * _Nonnull)browser didNotStartBrowsingForPeers:(NSError * _Nonnull)error

Modified -[MCNearbyServiceBrowserDelegate browser:foundPeer:withDiscoveryInfo:]

	Declaration
From	- (void)browser:(MCNearbyServiceBrowser )browser foundPeer:(MCPeerID )peerID withDiscoveryInfo:(NSDictionary *)info
To	- (void)browser:(MCNearbyServiceBrowser * _Nonnull)browser foundPeer:(MCPeerID * _Nonnull)peerID withDiscoveryInfo:(NSDictionary<NSString ,NSString > * _Nullable)info

Declaration

From

- (void)browser:(MCNearbyServiceBrowser *)browser foundPeer:(MCPeerID *)peerID withDiscoveryInfo:(NSDictionary *)info

- (void)browser:(MCNearbyServiceBrowser * _Nonnull)browser foundPeer:(MCPeerID * _Nonnull)peerID withDiscoveryInfo:(NSDictionary<NSString *,NSString *> * _Nullable)info

Modified -[MCNearbyServiceBrowserDelegate browser:lostPeer:]

	Declaration
From	- (void)browser:(MCNearbyServiceBrowser )browser lostPeer:(MCPeerID )peerID
To	- (void)browser:(MCNearbyServiceBrowser * _Nonnull)browser lostPeer:(MCPeerID * _Nonnull)peerID

MCPeerID.h

Modified MCPeerID.displayName

	Declaration
From	@property(readonly, atomic) NSString *displayName
To	@property(readonly, atomic, nonnull) NSString *displayName

Modified -[MCPeerID initWithDisplayName:]

	Declaration
From	- (instancetype)initWithDisplayName:(NSString *)myDisplayName
To	- (instancetype _Nonnull)initWithDisplayName:(NSString * _Nonnull)myDisplayName

MCSession.h

Modified -[MCSession cancelConnectPeer:]

	Declaration
From	- (void)cancelConnectPeer:(MCPeerID *)peerID
To	- (void)cancelConnectPeer:(MCPeerID * _Nonnull)peerID

Modified MCSession.connectedPeers

	Declaration
From	@property(readonly, atomic) NSArray *connectedPeers
To	@property(readonly, atomic, nonnull) NSArray<MCPeerID > connectedPeers

Modified -[MCSession connectPeer:withNearbyConnectionData:]

	Declaration
From	- (void)connectPeer:(MCPeerID )peerID withNearbyConnectionData:(NSData )data
To	- (void)connectPeer:(MCPeerID * _Nonnull)peerID withNearbyConnectionData:(NSData * _Nonnull)data

Modified MCSession.delegate

	Declaration
From	@property(weak, atomic) id<MCSessionDelegate> delegate
To	@property(weak, atomic, nullable) id<MCSessionDelegate> delegate

Modified -[MCSession initWithPeer:]

	Declaration
From	- (instancetype)initWithPeer:(MCPeerID *)myPeerID
To	- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID

Modified -[MCSession initWithPeer:securityIdentity:encryptionPreference:]

	Declaration
From	- (instancetype)initWithPeer:(MCPeerID )myPeerID securityIdentity:(NSArray )identity encryptionPreference:(MCEncryptionPreference)encryptionPreference
To	- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID securityIdentity:(NSArray * _Nullable)identity encryptionPreference:(MCEncryptionPreference)encryptionPreference

Declaration

From

- (instancetype)initWithPeer:(MCPeerID *)myPeerID securityIdentity:(NSArray *)identity encryptionPreference:(MCEncryptionPreference)encryptionPreference

- (instancetype _Nonnull)initWithPeer:(MCPeerID * _Nonnull)myPeerID securityIdentity:(NSArray * _Nullable)identity encryptionPreference:(MCEncryptionPreference)encryptionPreference

Modified MCSession.myPeerID

	Declaration
From	@property(readonly, atomic) MCPeerID *myPeerID
To	@property(readonly, atomic, nonnull) MCPeerID *myPeerID

Modified -[MCSession nearbyConnectionDataForPeer:withCompletionHandler:]

	Declaration
From	- (void)nearbyConnectionDataForPeer:(MCPeerID )peerID withCompletionHandler:(void (^)(NSData connectionData, NSError *error))completionHandler
To	- (void)nearbyConnectionDataForPeer:(MCPeerID * _Nonnull)peerID withCompletionHandler:(void (^ _Nonnull)(NSData * _Nonnull connectionData, NSError * _Nullable error))completionHandler

Declaration

From

- (void)nearbyConnectionDataForPeer:(MCPeerID *)peerID withCompletionHandler:(void (^)(NSData *connectionData, NSError *error))completionHandler

- (void)nearbyConnectionDataForPeer:(MCPeerID * _Nonnull)peerID withCompletionHandler:(void (^ _Nonnull)(NSData * _Nonnull connectionData, NSError * _Nullable error))completionHandler

Modified MCSession.securityIdentity

	Declaration
From	@property(readonly, atomic) NSArray *securityIdentity
To	@property(readonly, atomic, nullable) NSArray *securityIdentity

Modified -[MCSession sendData:toPeers:withMode:error:]

	Declaration
From	- (BOOL)sendData:(NSData )data toPeers:(NSArray )peerIDs withMode:(MCSessionSendDataMode)mode error:(NSError **)error
To	- (BOOL)sendData:(NSData * _Nonnull)data toPeers:(NSArray<MCPeerID > _Nonnull)peerIDs withMode:(MCSessionSendDataMode)mode error:(NSError * _Nullable * _Nullable)error

Declaration

From

- (BOOL)sendData:(NSData *)data toPeers:(NSArray *)peerIDs withMode:(MCSessionSendDataMode)mode error:(NSError **)error

- (BOOL)sendData:(NSData * _Nonnull)data toPeers:(NSArray<MCPeerID *> * _Nonnull)peerIDs withMode:(MCSessionSendDataMode)mode error:(NSError * _Nullable * _Nullable)error

Modified -[MCSession sendResourceAtURL:withName:toPeer:withCompletionHandler:]

	Declaration
From	- (NSProgress )sendResourceAtURL:(NSURL )resourceURL withName:(NSString )resourceName toPeer:(MCPeerID )peerID withCompletionHandler:(void (^)(NSError *error))completionHandler
To	- (NSProgress * _Nullable)sendResourceAtURL:(NSURL * _Nonnull)resourceURL withName:(NSString * _Nonnull)resourceName toPeer:(MCPeerID * _Nonnull)peerID withCompletionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler

Declaration

From

- (NSProgress *)sendResourceAtURL:(NSURL *)resourceURL withName:(NSString *)resourceName toPeer:(MCPeerID *)peerID withCompletionHandler:(void (^)(NSError *error))completionHandler

- (NSProgress * _Nullable)sendResourceAtURL:(NSURL * _Nonnull)resourceURL withName:(NSString * _Nonnull)resourceName toPeer:(MCPeerID * _Nonnull)peerID withCompletionHandler:(void (^ _Nullable)(NSError * _Nullable error))completionHandler

Modified -[MCSession startStreamWithName:toPeer:error:]

	Declaration
From	- (NSOutputStream )startStreamWithName:(NSString )streamName toPeer:(MCPeerID )peerID error:(NSError *)error
To	- (NSOutputStream * _Nullable)startStreamWithName:(NSString * _Nonnull)streamName toPeer:(MCPeerID * _Nonnull)peerID error:(NSError * _Nullable * _Nullable)error

Declaration

From

- (NSOutputStream *)startStreamWithName:(NSString *)streamName toPeer:(MCPeerID *)peerID error:(NSError **)error

- (NSOutputStream * _Nullable)startStreamWithName:(NSString * _Nonnull)streamName toPeer:(MCPeerID * _Nonnull)peerID error:(NSError * _Nullable * _Nullable)error

Modified -[MCSessionDelegate session:didFinishReceivingResourceWithName:fromPeer:atURL:withError:]

	Declaration
From	- (void)session:(MCSession )session didFinishReceivingResourceWithName:(NSString )resourceName fromPeer:(MCPeerID )peerID atURL:(NSURL )localURL withError:(NSError *)error
To	- (void)session:(MCSession * _Nonnull)session didFinishReceivingResourceWithName:(NSString * _Nonnull)resourceName fromPeer:(MCPeerID * _Nonnull)peerID atURL:(NSURL * _Nonnull)localURL withError:(NSError * _Nullable)error

Declaration

From

- (void)session:(MCSession *)session didFinishReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID atURL:(NSURL *)localURL withError:(NSError *)error

- (void)session:(MCSession * _Nonnull)session didFinishReceivingResourceWithName:(NSString * _Nonnull)resourceName fromPeer:(MCPeerID * _Nonnull)peerID atURL:(NSURL * _Nonnull)localURL withError:(NSError * _Nullable)error

Modified -[MCSessionDelegate session:didReceiveCertificate:fromPeer:certificateHandler:]

	Declaration
From	- (void)session:(MCSession )session didReceiveCertificate:(NSArray )certificate fromPeer:(MCPeerID *)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler
To	- (void)session:(MCSession * _Nonnull)session didReceiveCertificate:(NSArray * _Nullable)certificate fromPeer:(MCPeerID * _Nonnull)peerID certificateHandler:(void (^ _Nonnull)(BOOL accept))certificateHandler

Declaration

From

- (void)session:(MCSession *)session didReceiveCertificate:(NSArray *)certificate fromPeer:(MCPeerID *)peerID certificateHandler:(void (^)(BOOL accept))certificateHandler

- (void)session:(MCSession * _Nonnull)session didReceiveCertificate:(NSArray * _Nullable)certificate fromPeer:(MCPeerID * _Nonnull)peerID certificateHandler:(void (^ _Nonnull)(BOOL accept))certificateHandler

Modified -[MCSessionDelegate session:didReceiveData:fromPeer:]

	Declaration
From	- (void)session:(MCSession )session didReceiveData:(NSData )data fromPeer:(MCPeerID *)peerID
To	- (void)session:(MCSession * _Nonnull)session didReceiveData:(NSData * _Nonnull)data fromPeer:(MCPeerID * _Nonnull)peerID

Declaration

From

- (void)session:(MCSession *)session didReceiveData:(NSData *)data fromPeer:(MCPeerID *)peerID

- (void)session:(MCSession * _Nonnull)session didReceiveData:(NSData * _Nonnull)data fromPeer:(MCPeerID * _Nonnull)peerID

Modified -[MCSessionDelegate session:didReceiveStream:withName:fromPeer:]

	Declaration
From	- (void)session:(MCSession )session didReceiveStream:(NSInputStream )stream withName:(NSString )streamName fromPeer:(MCPeerID )peerID
To	- (void)session:(MCSession * _Nonnull)session didReceiveStream:(NSInputStream * _Nonnull)stream withName:(NSString * _Nonnull)streamName fromPeer:(MCPeerID * _Nonnull)peerID

Declaration

From

- (void)session:(MCSession *)session didReceiveStream:(NSInputStream *)stream withName:(NSString *)streamName fromPeer:(MCPeerID *)peerID

- (void)session:(MCSession * _Nonnull)session didReceiveStream:(NSInputStream * _Nonnull)stream withName:(NSString * _Nonnull)streamName fromPeer:(MCPeerID * _Nonnull)peerID

Modified -[MCSessionDelegate session:didStartReceivingResourceWithName:fromPeer:withProgress:]

	Declaration
From	- (void)session:(MCSession )session didStartReceivingResourceWithName:(NSString )resourceName fromPeer:(MCPeerID )peerID withProgress:(NSProgress )progress
To	- (void)session:(MCSession * _Nonnull)session didStartReceivingResourceWithName:(NSString * _Nonnull)resourceName fromPeer:(MCPeerID * _Nonnull)peerID withProgress:(NSProgress * _Nonnull)progress

Declaration

From

- (void)session:(MCSession *)session didStartReceivingResourceWithName:(NSString *)resourceName fromPeer:(MCPeerID *)peerID withProgress:(NSProgress *)progress

- (void)session:(MCSession * _Nonnull)session didStartReceivingResourceWithName:(NSString * _Nonnull)resourceName fromPeer:(MCPeerID * _Nonnull)peerID withProgress:(NSProgress * _Nonnull)progress

Modified -[MCSessionDelegate session:peer:didChangeState:]

	Declaration
From	- (void)session:(MCSession )session peer:(MCPeerID )peerID didChangeState:(MCSessionState)state
To	- (void)session:(MCSession * _Nonnull)session peer:(MCPeerID * _Nonnull)peerID didChangeState:(MCSessionState)state

Declaration

From

- (void)session:(MCSession *)session peer:(MCPeerID *)peerID didChangeState:(MCSessionState)state

- (void)session:(MCSession * _Nonnull)session peer:(MCPeerID * _Nonnull)peerID didChangeState:(MCSessionState)state