使用Flask-socketIO进行即时消息传递 [英] Instant messaging with Flask-socketIO

问题描述

我想使用Flask + Flask-soketIO实现即时消息服务器.客户端在手机上(Ionic 2的正面)

我已经用socketIO尝试了不同的聊天室示例，但是我想知道如何管理多个用户两个两个地聊天.

I want to implement an instant messaging server using Flask + Flask-soketIO. with client side on mobile phone (front in Ionic 2)

I have already tried different chat room examples with socketIO but I wonder how to manage multiple users chatting two by two.

我还不熟悉即时消息传递体系结构.关于这个问题，我有几个问题:

I'm not yet familiar with instant messaging architectures. I have several questions on the subject :

• 首先，Flask是一个为手机应用程序实现即时消息传递的好框架吗?
  我确实从Flask开始，因为它看上去功能强大且不像Django那样笨重.
• 在具有sokcetIO的即时消息应用程序中，如何将用户两两相连?
  我尝试了这段代码，但是它可用于同一聊天室中的多个用户:
  

在客户端:

    <script type="text/javascript">
        $(document).ready(function() {
            var socket = io.connect("http://127.0.0.1:5000");
            socket.on('connect', function() {
                 console.log('connected')
            });
            socket.on('message',function(msg){
                $("#messages").append('<li>' + msg + '</li>');
            });
            $("#sendButton").on('click', function() {
                console.log($('#myMessage').val());
                socket.send({ 'author': 'Kidz55',
                              'message': $('#myMessage').val()});
                $('#myMessage').val('');
            });
        });
    </script>

在服务器端:

On the server side :

@socketio.on('message')
def handle_json(json):
    print('received json: ' + str(json))
    # broadcasting to everyone who 's connected
    send(json,,broadcast=True)

• 它具有可扩展性，并且支持繁忙的流量吗?

推荐答案

在具有sokcetIO的即时消息应用程序中，如何将用户两两相连?

In instant messaging app with sokcetIO, how can I connect users two by two?

如果总是两个用户聊天，那么他们可以彼此直接发送消息.客户端连接时，将为其分配一个会话ID，即 sid .如果您跟踪这些ID并将其映射到您的用户，则可以向特定用户发送消息.例如，如果将用户的 sid 值存储在用户数据库中，则可以按照以下方式向该用户发送直接消息:

If it is always going to be two users chatting, then they can send direct messages to each other. When a client connects, it gets assigned a session id, or sid. If you keep track of these ids and map them to your users, you can then send a message to specific users. For example, if you store the sid value for a user in your user database, you can then send a direct message to that user as follows:

emit('private_message', {'msg': 'hello!'}, room=user.sid)

它具有可扩展性，并且支持大流量吗?

Is it scalable, and does it support heavy traffic ?

有许多因素会影响服务器可以处理的流量.Flask-SocketIO服务器具有可伸缩性，从某种意义上说，如果单个进程无法处理流量，则可以添加更多进程，基本上为您提供了很大的增长空间.

There are many factors that influence how much traffic your server can handle. The Flask-SocketIO server is scalable, in the sense that if a single process cannot handle the traffic, you can add more processes, basically giving you a lot of room to grow.

这篇关于使用Flask-socketIO进行即时消息传递的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！