[英]node.js socket.io-client + python socketio
I am trying to use Socket.IO to allow my Node.JS app to communicate with a Python Backend. 我正在尝试使用Socket.IO来允许我的Node.JS应用程序与Python后端通信。 I want Node.JS to act as the client and Python to act as the server, so I am using the socket.io-client Node.JS module in addition to the gevent-socketio python module.
我希望Node.JS充当客户端,Python充当服务器,所以除了gevent-socketio python模块之外,我还使用了socket.io-client Node.JS模块。
https://github.com/LearnBoost/socket.io-client https://github.com/abourget/gevent-socketio https://github.com/LearnBoost/socket.io-client https://github.com/abourget/gevent-socketio
Here is my python server: 这是我的python服务器:
#!/usr/bin/env python
from socketio.server import SocketIOServer
from socketio.namespace import BaseNamespace
class MyNamespace(BaseNamespace):
def on_foobar(self,data):
print 'received method for foobar'
print data
server = SocketIOServer(('localhost', 1234),resource=MyNamespace,policy_server=False)
print 'SocketIO server listening...'
server.serve_forever()
Here is my Node.JS server (acting as client): 这是我的Node.JS服务器(充当客户端):
#!/usr/bin/env node
var io = require('socket.io-client');
var PySocket = io.connect('localhost:1234');
PySocket.emit('foobar',{'key1':'value1'});
For some reason, the python server is not seeing the connection. 出于某种原因,python服务器无法看到连接。 can anyone point out what I am missing?
谁能指出我所缺少的吗?
You'll need a little bit more on the Python side. 您将需要在Python方面多一点。
The Namespace object is not to be passed as a parameter to the SocketIOServer object. 命名空间对象不应作为参数传递给SocketIOServer对象。 That
resource
(later renamed to namespace
) is only the name of the path to be recognized (like http://localhost/[namespace]/[rest of the socket.io protocol path]. I agree there is an overlap in terminology, but we rarely deal with a resource/namespace other than socket.io
. 该
resource
(后来重命名为namespace
)只是要识别的路径的名称(例如http:// localhost / [namespace] / [socket.io协议路径的其余部分]。我同意术语存在重叠,但是我们很少处理socket.io
以外的资源/命名空间。
Now, for your python IO-server to run, you'll need to wrap it using some framework.. to actually dispatch some incoming request to the correct handler. 现在,要使您的python IO服务器运行,您需要使用某种框架进行包装。以实际将一些传入请求分派到正确的处理程序。 That handler must execute
socketio_manage()
and this is the function where you should pass your Namespace object as a parameter. 该处理程序必须执行
socketio_manage()
,这是您应将Namespace对象作为参数传递的函数。 Also, your framework will probably want to serve other files, like the .swf ... gevent-socketio doesn't do that for you. 另外,您的框架可能会希望提供其他文件,例如.swf ... gevent-socketio不会为您执行此操作。 Also, if you want your python process to do anything (like interact with databases, load some configuration files), I recommend you pick a framework, as it will ease your life for mostly anything you'll need to do.
另外,如果您希望python进程做任何事情(例如与数据库交互,加载一些配置文件),我建议您选择一个框架,因为它可以简化您的大部分工作。
If you really just want to have a socket
-type of server, from node.js to python, then why not use the standard TCP/UDP sockets ? 如果您真的只想拥有一个
socket
类型的服务器(从node.js到python),那么为什么不使用标准的TCP / UDP套接字呢? In that case, you wouldn't need the overhead of a framework, the encoding/decoding of the Socket.IO protocol, etc.. 在这种情况下,您将不需要框架的开销,Socket.IO协议的编码/解码等。
What is your particular use case ? 您的特定用例是什么? Maybe this could shed some light on the way to go.
也许这可以为下一步的发展提供一些启示。
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