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![_peerID = [[MCPeerID alloc]
initWithDisplayName:displayName];
_session = [[MCSession alloc] initWithPeer:_peerID];
_session.delegate = self;](https://image.slidesharecdn.com/multipleconnectivityframeworkkeynote-140410212955-phpapp01/85/Multiple-Connectivity-Framework-Keynote-12-320.jpg)
![_advertiser = [[MCAdvertiserAssistant alloc]
initWithServiceType:@"chat-files"
discoveryInfo:nil
session:_session];
[_advertiser start];
_browser = [[MCBrowserViewController alloc]
initWithServiceType:@"chat-files"
session:_session];](https://image.slidesharecdn.com/multipleconnectivityframeworkkeynote-140410212955-phpapp01/85/Multiple-Connectivity-Framework-Keynote-13-320.jpg)
![[_appDelegate.mcManager.session sendData:dataToSend
toPeers:allPeers
withMode:MCSessionSendDataReliable
error:&error];](https://image.slidesharecdn.com/multipleconnectivityframeworkkeynote-140410212955-phpapp01/85/Multiple-Connectivity-Framework-Keynote-15-320.jpg)
Uploaded byLi Lin
Multiple Connectivity Framework Keynote
The document discusses Apple's Multipeer Connectivity framework which allows for direct peer-to-peer connections between nearby iOS and OS X devices over WiFi, Bluetooth, or infrastructure WiFi networks. It recommends downloading the FireChat app as an example and provides information on pros and cons, sending and receiving data, building connections between peers, and data transfer speeds using different connection types. Resources for tutorials on the Multipeer Connectivity framework are also listed.
Multiple Connectivity Framework Keynote
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- 7. Wireless mesh networking •Peer-to-peer connections: • infrastructure Wi-Fi networks • peer-to-peer Wi-Fi • Bluetooth personal area networks
- 8. Pros & Cons •Pros • Without an internet connection • Location-based communication (nearby) • Cons • Sessions currently support up to 8 peers • Data transfer is slow – especially on Bluetooth • Can not cross networks in single connection • Not support background mode
- 9. Sending & Receiving Information •Messages: Text or small serialised objects (NSData) • Streams: Audio, video, or real-time sensor events • Resources: Images, movies, or documents.
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- 11. Steps • PeerID • Session •Advertise • Browser • Accept
- 12. _peerID = [[MCPeerIDalloc] initWithDisplayName:displayName]; _session = [[MCSession alloc] initWithPeer:_peerID]; _session.delegate = self;
- 13. _advertiser = [[MCAdvertiserAssistantalloc] initWithServiceType:@"chat-files" discoveryInfo:nil session:_session]; [_advertiser start]; _browser = [[MCBrowserViewController alloc] initWithServiceType:@"chat-files" session:_session];
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- 16. 傳輸速度 • Bluetooth： • Bluetooth(Bonjour over Bluetooth) • Multipeer Connectivity 不是使⽤用 BLE/Bluetooth 4.0 advertisement。 • 猜測：使⽤用 Bluetooth Classic。 • WiFi • Multipeer Connectivity 不是使⽤用 WiFi Direct。理論上可達 250 Mbps，實測⼤大約 35-50 Mbps。 • 猜測：與 AirDrop ⼀一樣，使⽤用 Adhoc WiFi。上限為 11 Mbps。實測 兩台 Mac 的 AirDrop 傳輸⼤大約是 18 Mbps (不同 Wifi 下是 4 Mbps)。
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