Multipeer Connectivity如何获得广告对等方的名称?

时间:2019-06-09 17:07:11

标签: ios swift multipeer-connectivity

iOS12 Swift 5.x

我正在使用Multipeer Connectivity。到目前为止,如果我以正确的顺序连接设备,效果很好。

使用样板代码,将问题跟踪到这里。

func setupStream() {
  do {
    outputStream = try session.startStream(withName: "chat", toPeer: session.connectedPeers.first!)
    for debug in session.connectedPeers {
      print("Peer connected \(debug.displayName)")
    }
  } catch {
      print("unable to open stream")
  }
  if let outputStream = outputStream {
    outputStream.delegate = self
    outputStream.schedule(in: RunLoop.main, forMode:RunLoop.Mode.default)
    outputStream.open()
  }
}

现在,如果我先启动广告商,然后再启动浏览器,那么它会很好地运行。但是,如果我在广告商之前启动浏览器,它们似乎会彼此见面……即使我不是从它们来做广告,也不是从它们来做服务并连接到错误的客户端。

怎么说与广告服务的同行建立联系,而不是任何人和您找到的每个人...

1 个答案:

答案 0 :(得分:0)

iOS 12,Swift 5

找到了一个我在这里发布的解决方案,一个很好的简单解决方案。广告服务时,我会提供一些发现信息。这里的关键是发现变量。

块看起来这样。

class ColorService : NSObject {

lazy var session : MCSession = {
    let session = MCSession(peer: self.myPeerId, securityIdentity: nil, encryptionPreference: .required)
    session.delegate = self
    return session
}()

 var delegate : ColorServiceDelegate?

// Service type must be a unique string, at most 15 characters long
// and can contain only ASCII lowercase letters, numbers and hyphens.
private let ColorServiceType = "example-color"
private let myPeerId = MCPeerID(displayName: UIDevice.current.name)
private let serviceAdvertiser : MCNearbyServiceAdvertiser

override init() {
    let discover:[String:String] = ["prime":myPeerId.displayName]
    self.serviceAdvertiser = MCNearbyServiceAdvertiser(peer: myPeerId, discoveryInfo: discover, serviceType: ColorServiceType)

    super.init()

    self.serviceAdvertiser.delegate = self
    self.serviceAdvertiser.startAdvertisingPeer()

}

deinit {
    self.serviceAdvertiser.stopAdvertisingPeer()
}

func stopAdvertising() {
  self.serviceAdvertiser.stopAdvertisingPeer()
}

另一方面,当我在寻找服务时,我仅邀请具有发现设置的对等方,显然是使用上述信息作为邀请方。

extension ColorSearch : MCNearbyServiceBrowserDelegate {

func browser(_ browser: MCNearbyServiceBrowser, didNotStartBrowsingForPeers error: Error) {
    NSLog("%@", "didNotStartBrowsingForPeers: \(error)")
}

func browser(_ browser: MCNearbyServiceBrowser, foundPeer peerID: MCPeerID, withDiscoveryInfo info: [String : String]?) {
    NSLog("%@", "foundPeer: \(peerID)")
    NSLog("%@", "invitePeer: \(peerID)")
    NSLog("%@", "discoverInfo: \(info)")
    primePeer = info!["prime"]
    if primePeer != nil {
      if peerID.displayName == primePeer {
        browser.invitePeer(peerID, to: self.session, withContext: nil, timeout: 10)
      }
    }

}

func browser(_ browser: MCNearbyServiceBrowser, lostPeer peerID: MCPeerID) {
    NSLog("%@", "lostPeer: \(peerID)")
}

func disconnect() {
  self.session.disconnect()
}

我没有连接矩阵,只有一个主机和一堆从机。也许不是打算实现多对等连接,但是一个好的解决方案则永远如此。