如何在使用node. js和共享conversation_id的私聊中向所有用户发出消息socket.io?
var express = require('express'),
app = express(),
server = require('http').createServer(app),
io = require('socket.io').listen(server);
conversations = {};
app.get('/', function(req, res) {
res.sendfile('/');
});
io.sockets.on('connection', function (socket) {
socket.on('send message', function (data) {
var conversation_id = data.conversation_id;
if (conversation_id in conversations) {
console.log (conversation_id + ' is already in the conversations object');
// emit the message [data.message] to all connected users in the conversation
} else {
socket.conversation_id = data;
conversations[socket.conversation_id] = socket;
conversations[conversation_id] = data.conversation_id;
console.log ('adding ' + conversation_id + ' to conversations.');
// emit the message [data.message] to all connected users in the conversation
}
})
});
server.listen(8080);
您必须使用conversation_id
创建一个房间,并让用户订阅该房间,这样您就可以通过以下方式向该房间发送私人消息,
客户
var socket = io.connect('http://ip:port');
socket.emit('subscribe', conversation_id);
socket.emit('send message', {
room: conversation_id,
message: "Some message"
});
socket.on('conversation private post', function(data) {
//display data.message
});
服务器
socket.on('subscribe', function(room) {
console.log('joining room', room);
socket.join(room);
});
socket.on('send message', function(data) {
console.log('sending room post', data.room);
socket.broadcast.to(data.room).emit('conversation private post', {
message: data.message
});
});
以下是创建房间、订阅房间和向房间发送消息的文档和示例:
当然:简单地说,
这就是你需要的:
io.to(socket.id).emit("event", data);
每当用户加入服务器时,将生成包括ID在内的套接字详细信息。这是真正有助于向特定人员发送消息的ID。
首先我们需要将所有socket. id存储在数组中,
var people={};
people[name] = socket.id;
这里name是收件人名称。示例:
people["ccccc"]=2387423cjhgfwerwer23;
所以,现在我们可以在发送消息时使用收件人名称获取该socket.id:
为此,我们需要知道recievername.You需要向服务器发出接收者名称。
最后一件事是:
socket.on('chat message', function(data){
io.to(people[data.reciever]).emit('chat message', data.msg);
});
希望这对你有用祝你好运