WebRTC PeerJS 文本聊天 - 同时连接到多个 peerID

Question

嗨， friend 们，当我单独连接到单个对等点时，我一直致力于连接到多个对等点 ID 以进行文本聊天

但我在同时连接多个 peerid 时遇到问题

例如，为了连接到单个对等点，我们将使用它

    var conn = peer.connect(peerId);

    conn.on('open', function() {
        connect(conn);
    });

当我想连接到多个对等 ID 时

例如:var peerIDs = ['peerid 1', 'peerid 2', 'peerid 3']

我为此使用循环

for(var i=0 ; i < peerIDs.length ; i++){
    conn = peer.connect(peerIDs[i]);

    conn.on('open', function() {
        connect(conn);
    });        
}

这是完整的代码:

var userId = new Date().getTime();
//Get the ID from the server
var peer   = new Peer(userId, {host: 'localhost', port: 3031, path: '/',debug: true }); 

var conn;
var connections = [];

//to receive id from the server
peer.on('open', function(id){
    console.log('the id is'  +id);

});

//in case of error
peer.on('error', function(e){
    alert(e.message);
})

//Awaits for the connection
peer.on('connection', connect);

function connect(c){

    conn = c;

    connections[c.peer].on('data', function(data){

        var mess = document.createElement('div');
        mess.innerHTML = '<span class="peer">' + c.peer + '</span>: ' + data;
        angular.element( document.querySelector( '.messages' ) ).append(mess);


    });

    connections[c.peer].on('close', function(){

        alert(c.peer + 'has left the chat');

    });



}

//When user clicks the chat button
$scope.chat = function(){
    alert('user clicked the connect button');

    var peerIDs = [ 'peerid 1',  'peerid 2', 'peerid 3'] 
    for(var i=0 ; i < peerIDs.length ; i++){
        var conn = peer.connect(peerIDs[i]);

        conn.on('open', function() {
            connections.push(c);
            connect(conn);
        });        
    }


}

//send message  when clicked
$scope.send = function(){

    // For each active connection, send the message.
    var msg = angular.element( document.querySelector( '#mess' ) ).val();

    //Send message to all connected peers
    for(var i in connections){
        connections[i].send(msg);
    }

    angular.element( document.querySelector( '.messages' ) ).append('<div><span class="you">You: </span>' + msg
          + '</div>');

}

您能否提供有关如何实现这一目标的见解。您的帮助将不胜感激。

Answer 1

为了能够同时拥有多个连接，您只需要同时处理多个连接。

// Array of remote peers ID and data channel
var remotePeerIds=[],// You need this to link with specific DOM element
connections=[]; // This is where you manage multi-connections

// create a Peer
var peer = new Peer({key: 'YOUR_KEY'}); // You can use your own peerID here

// Get your local peer id
peer.on('open', function(id) {
  console.log('My peer ID is: ' + id);
});

// Start connection with other peer - and handle it
getConnect(remotePeerId){
    var conn = peer.connect(remotePeerId);
    handleConnection(conn);
}

// Ok now you need to handle the received connection too
peer.on('connection',function(conn){
     handleConnection(conn);
});

// Handle connection - this is most important part
handleConnection(conn){
    remotePeerIds.push(conn.peer); // Add remote peer to list

    conn.on('open', function() {
        console.log("Connected with peer: "+remotePeerId);
        conn.on('data',function(data){
           // You can do whatever you want with the data from this connection - this is also the main part
           dataHandler(conn,data);
        });
        conn.on('error',function(){
          // handle error 
          connectionError(conn);
        });

        conn.on('close',function(){
          // Handle connection closed
          connectionClose(conn);
        });
        connections.push(conn);
    });
  });
}

// So now you have multi-connections. If you want to send a message to all other peer, just using for loop with all the connections
function broadcastMessage(message){
    for(var i=0;i<connections.length,i++){
        connections[i].send(message);
    }
}

// Or if you want to send a message to a specific peer - you need to know his peerid

function privateMessage(remotePeerId,message){
   for(var i=0;i<connections.length,i++){
        if(connections[i].peer==remotePeerId){
           connections[i].send(message);
           break;
        }
   }
}

这是主要部分，您需要为连接处理程序添加更多代码，以防出错和关闭。

就是这样 !