example

example/link.py

@@ -0,0 +1,38 @@
+import json
+import urllib2
+
+PEERLINK='http://[::1]:8842/'
+NAME = 'chat'
+
+def urlopen(url, data=None, headers=None):
+    if data and not isinstance(data, str):
+        data = json.dumps(data)
+    if not headers:
+        headers = {
+            'Content-Type': 'application/json',
+            'User-Agent': 'ChatServer/0.0'
+        }
+    opener = urllib2.build_opener()
+    print 'urlopen', url, data
+    req = urllib2.Request(url, data=data, headers=headers)
+    response = opener.open(req)
+    return response.read()
+
+def post(action, data=None):
+    url = PEERLINK + action
+    return json.loads(urlopen(url, data))
+
+def add(name, url):
+    global NAME
+    NAME = name
+    return post('add', {'name': name, 'url': url})
+
+def remote(peer, action, data):
+    url = PEERLINK + '%s/%s/%s' % (peer, NAME, action)
+    if not data:
+        data = {'test': True}
+    print 'REMOTE', url
+    return urlopen(url, data)
+
+def remote_json(peer, action, data):
+    return json.loads(remote(peer, action, data))

example/server.py

@@ -1,104 +1,140 @@
-#!/usr/bin/python
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division, print_function
 
 import json
 import os
-import shutil
+import signal
-import SimpleHTTPServer
-import socket
-import SocketServer
 import sys
-import urllib2
+import mimetypes
 
-peers = {}
+from tornado.httpserver import HTTPServer
+from tornado.ioloop import IOLoop, PeriodicCallback
+from tornado.web import Application
+import tornado
 
-NETBASE='http://[::1]:8842/'
+import websocket
-NAME = 'chat'
+from websocket import trigger_event
+import state
+from tasks import Tasks
+from utils import json_dumps
+import link
 
-def remote(peer, action, data):
+import logging
-    url = NETBASE + '%s/%s/%s' % (peer, NAME, action)
+logger = logging.getLogger('server')
-    if data and not isinstance(data, str):
-        data = json.dumps(data)
-    opener = urllib2.build_opener()
-    req = urllib2.Request(url, data=data, headers={
-        'Content-Type': 'application/json',
-        'User-Agent': 'ChatServer/0.0'
-    })
-    response = opener.open(req)
-    return response.read()
 
+root_dir = os.path.normpath(os.path.abspath(os.path.dirname(__file__)))
+STATIC_PATH = os.path.join(root_dir, 'static')
 
-def add_service(name, url):
+class BaseHandler(tornado.web.RequestHandler):
-    add = NETBASE + 'add'
-    urllib2.urlopen(add, json.dumps({'name': name, 'url': url}))
 
-class Handler(SimpleHTTPServer.SimpleHTTPRequestHandler):
+    def serve_static(self, path, mimetype=None, include_body=True):
-
+        if not mimetype:
-    def do_GET(self):
+            mimetype = mimetypes.guess_type(path)[0]
-        print 'GET', self.path
+        logging.debug('serve %s', path)
-        path = os.path.join('static', self.path[1:] if self.path != '/' else 'index.html')
         if os.path.exists(path):
+            self.set_header('Content-Type', mimetype)
+            self.set_header('Content-Length', str(os.stat(path).st_size))
+            if include_body:
                 with open(path) as fd:
-                shutil.copyfileobj(fd, self.wfile)
+                    self.write(fd.read())
+        else:
+            self.set_status(404)
+        return
 
-    def _remote_request(self, action, data):
+    def render_json(self, response):
-        response = {}
+        response = json_dumps(response)
-        if action == 'message':
+        self.set_header('Content-Type', 'application/json')
-            pass
+        self.set_header('Content-Length', str(len(response)))
-        elif action == 'ping':
+        self.write(response)
-            print self.headers
+        self.finish()
-            response['userid'] = self.headers.getheader('From')
-            response['remote ping'] = True
-            response['data'] = data
-        return response
 
-    def _request(self, action, data):
+class RemoteHandler(BaseHandler):
+
+    def post(self, action):
+        data = json.loads(self.request.body)
         response = {}
-        if action == 'test':
+        print ('GOT remote request', action, data)
-            response['test'] = 'ok'
+        if action == 'info':
-            response['data'] = data
+            response = state.info
-        elif action in ('ping', 'pong'):
+        elif action == 'message':
+            data['from'] = self.request.headers['From']
+            trigger_event(action, data)
+        else:
+            response = {'error': 'unknown action'}
+        return self.render_json(response)
+
+class MainHandler(BaseHandler):
+
+    def get(self, path):
+        path = path[1:]
+        if not path:
+            path = 'index.html'
+        path = os.path.join(STATIC_PATH, path)
+        self.serve_static(path)
+
+    def post(self, path):
+        action = path.split('/')[1]
+        data = json.loads(self.request.body)
+        response = {}
+        if action in ('info', 'ping'):
+            if 'id' in data:
                 id = data['id']
                 del data['id']
-            response = remote(id, action, data)
+                response = link.remote_json(id, action, data)
-        return response
+        return self.render_json(response)
-
-    def do_POST(self):
-        print 'POST', self.path
-        length = int(self.headers.getheader('content-length'))
-        body = self.rfile.read(length)
-        data = json.loads(body)
-        if self.path.startswith('/remote'):
-            action = self.path.split('/')[2]
-            response = self._remote_request(action, data)
-        else:
-            action = self.path.split('/')[1]
-            response = self._request(action, data)
-
-        response = json.dumps(response, indent=2)
-        self.send_response(200)
-        self.send_header('Content-Type', 'application/json')
-        self.send_header('Content-Length', str(len(response)))
-        self.end_headers()
-        self.wfile.write(response)
-
-class Server(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
-    '''
-        IPv4/IPv6 Dual Stack
-    '''
-    address_family = socket.AF_INET6
-    allow_reuse_address = True
-
-    def server_bind(self):
-        self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, False)
-        SocketServer.TCPServer.server_bind(self)
 
 if __name__ == '__main__':
-    if len(sys.argv) == 2:
+    address = ''
-        port = int(sys.argv[1])
-    else:
     port = 8000
-    print "listening on port", port
+
-    url = 'http://127.0.0.1:%s/remote/' % port
+    if len(sys.argv) > 1:
-    add_service(NAME, url)
+        port = int(sys.argv[1])
-    httpd = Server(("", port), Handler)
+        link.PEERLINK=sys.argv[2]
-    httpd.serve_forever()
+
+    logging.basicConfig(level=logging.DEBUG)
+
+    options = {
+        'debug': True,
+    }
+    handlers = [
+        (r'/ws', websocket.Handler),
+        (r"/remote/(.*)", RemoteHandler),
+        (r"(.*)", MainHandler),
+    ]
+
+    http_server = HTTPServer(Application(handlers, **options))
+
+    http_server.listen(port, address)
+
+    state.tasks = Tasks()
+    state.main = IOLoop.instance()
+
+    state._status = PeriodicCallback(lambda: state.info.update(link.post('info')), 60000)
+    state._status.start()
+
+    if ':' in address:
+        host = '[%s]' % address
+    elif not address:
+        host = '[::1]'
+    else:
+        host = address
+    url = 'http://%s:%s/' % (host, port)
+
+    link.add('chat', url + 'remote/')
+    state.info = link.post('info')
+
+    print('listening at %s' % url)
+
+    def shutdown():
+        state.tasks.join()
+        http_server.stop()
+
+    signal.signal(signal.SIGTERM, shutdown)
+
+    try:
+        state.main.start()
+    except:
+        print('shutting down...')
+    shutdown()

example/state.py

@@ -0,0 +1,4 @@
+websockets = []
+tasks = None
+info = {}
+peers = []

example/static/chat.js

@@ -0,0 +1,90 @@
+var names = {};
+Ox.load(function() {
+    var app = window.app = {};
+    app.triggerEvent = function(action, data) {
+        if (action == 'info') {
+            Ox.$('#id').html(data.id);
+            Ox.$('#nick').val(data.nick || '');
+            var peers = Ox.$('#peers');
+            peers.empty()
+            data.local.forEach(function(peer) {
+                console.log('add', peer);
+                if (names[peer]) {
+                    Ox.$('<div>')
+                        .html(peer + '(' + names[peer] +')')
+                        .appendTo(peers);
+                } else {
+                    app.getNick(peer, function(nick) {
+                        var html = peer;
+                        if(nick) {
+                            html = peer + '(' + nick +')';
+                        }
+                        Ox.$('<div>')
+                            .html(html)
+                            .appendTo(peers);
+                    });
+                }
+            });
+        } else if (action == 'message') {
+            var html = (names[data.from] || data.from) + ': ' + data.message;
+            Ox.$('<div>').html(html).appendTo(Ox.$('#messages'));
+        }
+        Ox.print(action, data);
+
+    };
+    app.socket = new WebSocket('ws://' + document.location.host + '/ws');
+    app.socket.onopen = function(event) {
+        app.triggerEvent('open', event);
+    };
+    app.socket.onmessage = function(event) {
+        var data = JSON.parse(event.data);
+        app.triggerEvent(data[0], data[1]);
+    };
+    app.socket.onerror = function(event) {
+        app.triggerEvent('error', event);
+        app.socket.close();
+    };
+    app.socket.onclose = function(event) {
+        app.triggerEvent('close', event);
+        setTimeout(connectSocket, 1000);
+    };
+    app.request = function(action, data, callback) {
+        var xhr = new XMLHttpRequest();
+        xhr.onload = function() {
+            try {
+                var response = JSON.parse(this.response);
+                callback && callback(response);
+            } catch(e) {
+                Ox.print('FAIL', this.response);
+            }
+        }
+        xhr.open('POST', '/' + action);
+        data = JSON.stringify(data);
+        xhr.send(data);
+    };
+    app.api = function(action, data) {
+        console.log('api', action, data);
+        app.socket.send(JSON.stringify([action, data]));
+    };
+    Ox.$('#send').on({
+        click: function() {
+            var value = Ox.$('#message').val();
+            if (value) {
+                app.api('sendMessage', {
+                    message: value
+                });
+            }
+        }
+    })
+    app.getNick = function(peer, callback) {
+        app.request('info', {id: peer}, function(response) {
+            names[peer] = response.nick;
+            callback(response.nick);
+        });
+    }
+    Ox.$('#nick').on({
+        change: function() {
+            app.api('nick', this.value);
+        }
+    });
+});

example/static/index.html

@@ -4,29 +4,21 @@
     <meta charset="utf-8" />
     <title></title>
     <style>
-    </style>
+        #messages {
-    <script src="https://oxjs.org/build/Ox.js"></script>
-    <script>
-        Ox.load(function() {
-            var app = window.app = {};
-            app.request = function(action, data, callback) {
-                data = JSON.stringify(data);
-                var xhr = new XMLHttpRequest();
-                xhr.open('POST', '/' + action, true);
-                xhr.onload = function() {
-                    var response = JSON.parse(this.response);
-                    callback(response)
-                };
-                xhr.onerror = function(error) {
-                    callback(null, error);
         }
-                xhr.setRequestHeader('Content-Type', 'application/json');
+    </style>
-                xhr.send(data);
+    <script src="http://localhost/oxjs/build/Ox.js"></script>
-            };
+    <script src="/chat.js"></script>
-        });
-    </script>
 </head>
 <body>
+Nick: <input id="nick" type="text"></input>(<span id="id"></span>)<br>
+Peers:
+<div id="peers"></div>
+<textarea id="message" type="text"></textarea><br/>
+<input id="send" type="button" value="Send"></input>
+<br>
+Message:<br/>
+<div id="messages"></div>
 </body>
 </html>
 

example/tasks.py

@@ -0,0 +1,49 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+
+from __future__ import division
+
+from Queue import Queue
+from threading import Thread
+
+from websocket import trigger_event
+import state
+import link
+
+import logging
+logger = logging.getLogger('websocket')
+
+class Tasks(Thread):
+
+    _active = True
+
+    def __init__(self):
+        self.q = Queue()
+        Thread.__init__(self)
+        self.daemon = True
+        self.start()
+
+    def run(self):
+        while self._active:
+            m = self.q.get()
+            if m:
+                action, data = m
+                logger.debug('process task: %s data: %s', action, data)
+                if action == 'sendMessage':
+                    for peer in state.info.get('nodes', []):
+                        link.remote(peer, 'message', data)
+                elif action == 'nick':
+                    state.info['nick'] = data
+                    for peer in state.info.get('nodes', []):
+                        link.remote(peer, 'nick', data)
+            self.q.task_done()
+
+    def join(self):
+        self._active = False
+        self.q.put(None)
+        self.q.join()
+        return Thread.join(self)
+
+    def queue(self, action, data=None):
+        self.q.put((action, data))
+

example/utils.py

@@ -0,0 +1,14 @@
+import json
+import datetime
+
+def _to_json(python_object):
+    if isinstance(python_object, datetime.datetime):
+        if python_object.year < 1900:
+            tt = python_object.timetuple()
+            return '%d-%02d-%02dT%02d:%02d%02dZ' % tuple(list(tt)[:6])
+        return python_object.strftime('%Y-%m-%dT%H:%M:%SZ')
+    raise TypeError(u'%s %s is not JSON serializable' % (repr(python_object), type(python_object)))
+
+def json_dumps(obj):
+    indent = 2
+    return json.dumps(obj, indent=indent, default=_to_json, ensure_ascii=False).encode('utf-8')

example/websocket.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=4:sts=4:ts=4
+from __future__ import division
+
+from tornado.websocket import WebSocketHandler
+from tornado.ioloop import IOLoop
+import json
+
+import state
+import link
+from utils import json_dumps
+
+import logging
+logger = logging.getLogger('websocket')
+
+class Handler(WebSocketHandler):
+
+    def check_origin(self, origin):
+        # allow access to websocket from site, installer and loader (local file)
+        return self.request.host in origin \
+            or origin == 'null'
+
+    def open(self):
+        if self.request.headers['origin'] not in ('null',) \
+            and self.request.host not in self.request.headers['origin']:
+            logger.debug('reject cross site attempt to open websocket %s', self.request)
+            self.close()
+        if self not in state.websockets:
+            state.websockets.append(self)
+        state.info.update(link.post('info'))
+        self.post('info', state.info)
+    #websocket calls
+    def on_message(self, message):
+        action, data = json.loads(message)
+        if state.tasks:
+            state.tasks.queue(action, data)
+
+    def on_close(self):
+        if self in state.websockets:
+            state.websockets.remove(self)
+
+    def post(self, event, data):
+        message = json_dumps([event, data])
+        main = IOLoop.instance()
+        main.add_callback(lambda: self.write_message(message))
+
+def trigger_event(event, data):
+    if len(state.websockets):
+        logger.debug('trigger event %s %s %s', event, data, len(state.websockets))
+    for ws in state.websockets:
+        try:
+            ws.post(event, data)
+        except:
+            logger.debug('failed to send to ws %s %s %s', ws, event, data, exc_info=1)