Multipeer Connectivity Doesn't Connect Second Time - objective-c

Question

I'm using the Multipeer Connectivity Framework to transfer files between devices. I'm using the standard MCAdvertiserAssistant and MCBrowserViewController to connect the devices. On the first try from device A to device B things work fine. Same things on the first transfer from device B to device A.
If you try either direction again, after MCBrowserViewController presents its dialog to choose a peer and you select one, the popup to accept the request on the other device never appears. No error messages, no calls to delegate methods - just nothing. Has anyone come across this and any ideas?

Answer 1

I had the same problem and solved it with initiating all the necessary components every time I start advertising or browsing for peers. It isn't the cleanest solution but in my case it works 100%.
The code below is how I implemented it, so this is without the build-in ViewController provided by Apple.
Please be aware that [session disconnect] is an async method which sometimes take a few seconds to complete.
- (void)startBrowsing
{
// Initiate new advertiser
isAdvertising = YES;
_peerID = [[MCPeerID alloc] initWithDisplayName:#"Wallet"];
_session = [[MCSession alloc] initWithPeer:_peerID];
_session.delegate = self;
_advertiser = [[MCNearbyServiceAdvertiser alloc] initWithPeer:_peerID discoveryInfo:nil serviceType:#"made2pay"];
_advertiser.delegate = self;
// Start advertiser
[_advertiser startAdvertisingPeer];
}
- (void)stopBrowsing
{
[_advertiser stopAdvertisingPeer];
[_session disconnect];
_session = nil;
_peerID = nil;
_advertiser = nil;
isAdvertising = NO;
}