Merge pull request #3807 from ostcar/websocket_protocol

Add a protocol for websocket

CHANGELOG.rst

@@ -36,6 +36,7 @@ Core:
  - Support Python 3.7 [#3786].
  - Updated pdfMake to 0.1.37 [#3766].
  - Updated Django to 2.1 [#3777, #3786].
+ - Adds a websocket protocol [#3807].
 
 
 Version 2.2 (2018-06-06)

client/src/app/app.component.ts

@@ -1,5 +1,7 @@
 import { Component, OnInit } from '@angular/core';
 import { TranslateService } from '@ngx-translate/core';
+import { AutoupdateService } from './core/services/autoupdate.service';
+import { NotifyService } from './core/services/notify.service';
 
 /**
  * Angular's global App Component
@@ -12,11 +14,15 @@ import { TranslateService } from '@ngx-translate/core';
 export class AppComponent {
     /**
      * Initialises the operator, the auto update (and therefore a websocket) feature and the translation unit.
-     * @param operator
+     * @param autoupdateService
-     * @param autoupdate
+     * @param notifyService
      * @param translate
      */
-    constructor(private translate: TranslateService) {
+    constructor(
+        private autoupdateService: AutoupdateService,
+        private notifyService: NotifyService,
+        private translate: TranslateService
+    ) {
         // manually add the supported languages
         translate.addLangs(['en', 'de', 'fr']);
         // this language will be used as a fallback when a translation isn't found in the current language

client/src/app/core/services/autoupdate.service.ts

@@ -33,26 +33,13 @@ import { User } from 'app/shared/models/users/user';
     providedIn: 'root'
 })
 export class AutoupdateService extends OpenSlidesComponent {
-    /**
-     * Stores the to create the socket created using {@link WebsocketService}.
-     */
-    private socket;
-
     /**
      * Constructor to create the AutoupdateService. Calls the constructor of the parent class.
      * @param websocketService
      */
     constructor(private websocketService: WebsocketService) {
         super();
-    }
+        websocketService.getOberservable<any>('autoupdate').subscribe(response => {
-
-    /**
-     * Function to start the automatic update process
-     * will build up a websocket connection using {@link WebsocketService}
-     */
-    startAutoupdate(): void {
-        this.socket = this.websocketService.connect();
-        this.socket.subscribe(response => {
             this.storeResponse(response);
         });
     }
@@ -69,8 +56,6 @@ export class AutoupdateService extends OpenSlidesComponent {
         socketResponse.forEach(jsonObj => {
             const targetClass = this.getClassFromCollectionString(jsonObj.collection);
             if (jsonObj.action === 'deleted') {
-                console.log('storeResponse detect delete');
-
                 this.DS.remove(jsonObj.collection, jsonObj.id);
             } else {
                 this.DS.add(new targetClass().deserialize(jsonObj.data));

client/src/app/core/services/notify.service.spec.ts

@@ -0,0 +1,15 @@
+import { TestBed, inject } from '@angular/core/testing';
+
+import { NotifyService } from './notify.service';
+
+describe('WebsocketService', () => {
+    beforeEach(() => {
+        TestBed.configureTestingModule({
+            providers: [NotifyService]
+        });
+    });
+
+    it('should be created', inject([NotifyService], (service: NotifyService) => {
+        expect(service).toBeTruthy();
+    }));
+});

client/src/app/core/services/notify.service.ts

@@ -0,0 +1,42 @@
+import { Injectable } from '@angular/core';
+
+import { OpenSlidesComponent } from 'app/openslides.component';
+import { WebsocketService } from './websocket.service';
+
+interface NotifyFormat {
+    id: number; //Dummy
+}
+
+/**
+ * Handles all incoming and outgoing notify messages via {@link WebsocketService}.
+ */
+@Injectable({
+    providedIn: 'root'
+})
+export class NotifyService extends OpenSlidesComponent {
+    /**
+     * Constructor to create the NotifyService. Registers itself to the WebsocketService.
+     * @param websocketService
+     */
+    constructor(private websocketService: WebsocketService) {
+        super();
+        websocketService.getOberservable<any>('notify').subscribe(notify => {
+            this.receive(notify);
+        });
+    }
+
+    // TODO: Implement this
+    private receive(notify: NotifyFormat): void {
+        console.log('recv', notify);
+        // TODO: Use a Subject, so one can subscribe and get notifies.
+    }
+
+    // TODO: Make this api better: e.g. send(data, users?, projectors?, channel?, ...)
+    /**
+     * Sents a notify object to the server
+     * @param notify the notify objects
+     */
+    public send(notify: NotifyFormat): void {
+        this.websocketService.send('notify', notify);
+    }
+}

client/src/app/core/services/websocket.service.ts

@@ -1,6 +1,13 @@
 import { Injectable } from '@angular/core';
 import { Router } from '@angular/router';
 import { webSocket, WebSocketSubject } from 'rxjs/webSocket';
+import { Observable, Subject } from 'rxjs';
+
+interface WebsocketMessage {
+    type: string;
+    content: any;
+    id: string;
+}
 
 /**
  * Service that handles WebSocket connections.
@@ -20,21 +27,71 @@ export class WebsocketService {
     /**
      * Observable subject that might be `any` for simplicity, `MessageEvent` or something appropriate
      */
-    private subject: WebSocketSubject<any>;
+    private _websocketSubject: WebSocketSubject<WebsocketMessage>;
+
+    /**
+     * Subjects for types of websocket messages. A subscriber can get an Observable by {@function getOberservable}.
+     */
+    private _subjects: { [type: string]: Subject<any> } = {};
 
     /**
      * Creates a new WebSocket connection as WebSocketSubject
      *
      * Can return old Subjects to prevent multiple WebSocket connections.
      */
-    public connect(): WebSocketSubject<any> {
+    public connect(): void {
         const socketProtocol = this.getWebSocketProtocol();
         const socketPath = this.getWebSocketPath();
         const socketServer = window.location.hostname + ':' + window.location.port;
-        if (!this.subject) {
+        if (!this._websocketSubject) {
-            this.subject = webSocket(socketProtocol + socketServer + socketPath);
+            this._websocketSubject = webSocket(socketProtocol + socketServer + socketPath);
+            // directly subscribe. The messages are distributes below
+            this._websocketSubject.subscribe(message => {
+                const type: string = message.type;
+                if (type === 'error') {
+                    console.error('Websocket error', message.content);
+                } else if (this._subjects[type]) {
+                    this._subjects[type].next(message.content);
+                } else {
+                    console.log(`Got unknown websocket message type "${type}" with content`, message.content);
                 }
-        return this.subject;
+            });
+        }
+    }
+
+    /**
+     * Returns an observable for messages of the given type.
+     * @param type the message type
+     */
+    public getOberservable<T>(type: string): Observable<T> {
+        if (!this._subjects[type]) {
+            this._subjects[type] = new Subject<T>();
+        }
+        return this._subjects[type].asObservable();
+    }
+
+    /**
+     * Sends a message to the server with the content and the given type.
+     *
+     * @param type the message type
+     * @param content the actual content
+     */
+    public send<T>(type: string, content: T): void {
+        if (!this._websocketSubject) {
+            return;
+        }
+
+        const message: WebsocketMessage = {
+            type: type,
+            content: content,
+            id: ''
+        };
+
+        const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+        for (let i = 0; i < 8; i++) {
+            message.id += possible.charAt(Math.floor(Math.random() * possible.length));
+        }
+        this._websocketSubject.next(message);
     }
 
     /**

client/src/app/site/site.component.ts

@@ -3,8 +3,8 @@ import { Router } from '@angular/router';
 import { BreakpointObserver, Breakpoints, BreakpointState } from '@angular/cdk/layout';
 
 import { AuthService } from 'app/core/services/auth.service';
-import { AutoupdateService } from 'app/core/services/autoupdate.service';
 import { OperatorService } from 'app/core/services/operator.service';
+import { WebsocketService } from 'app/core/services/websocket.service';
 
 import { TranslateService } from '@ngx-translate/core'; //showcase
 import { BaseComponent } from 'app/base.component';
@@ -33,7 +33,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
      * Constructor
      *
      * @param authService
-     * @param autoupdateService
+     * @param websocketService
      * @param operator
      * @param router
      * @param breakpointObserver
@@ -42,7 +42,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
      */
     constructor(
         private authService: AuthService,
-        private autoupdateService: AutoupdateService,
+        private websocketService: WebsocketService,
         private operator: OperatorService,
         private router: Router,
         public vp: ViewportService,
@@ -66,7 +66,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
         // start autoupdate if the user is logged in:
         this.operator.whoAmI().subscribe(resp => {
             if (resp.user) {
-                this.autoupdateService.startAutoupdate();
+                this.websocketService.connect();
             } else {
                 //if whoami is not sucsessfull, forward to login again
                 this.operator.clear();

openslides/core/static/js/core/base.js

@@ -117,11 +117,11 @@ angular.module('OpenSlidesApp.core', [
                 $timeout(runRetryConnectCallbacks, getTimeoutTime());
             };
             socket.onmessage = function (event) {
-                var dataList = [];
+                var data;
                 try {
-                    dataList = JSON.parse(event.data);
+                    data = JSON.parse(event.data);
                     _.forEach(Autoupdate.messageReceivers, function (receiver) {
-                        receiver(dataList);
+                        receiver(data);
                     });
                 } catch(err) {
                     console.error(err);
@@ -133,10 +133,23 @@ angular.module('OpenSlidesApp.core', [
                 ErrorMessage.clearConnectionError();
             };
         };
-        Autoupdate.send = function (message) {
+        Autoupdate.send = function (type, content) {
-            if (socket) {
+            if (!socket) {
-                socket.send(JSON.stringify(message));
+                return;
             }
+
+            var message = {
+                type: type,
+                content: content,
+                id: '',
+            };
+
+            // Generate random id
+            var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+            for (var i = 0; i < 8; i++) {
+                message.id += possible.charAt(Math.floor(Math.random() * possible.length));
+            }
+            socket.send(JSON.stringify(message));
         };
         Autoupdate.closeConnection = function () {
             if (socket) {
@@ -369,7 +382,12 @@ angular.module('OpenSlidesApp.core', [
     'dsEject',
     function (DS, autoupdate, dsEject) {
         // Handler for normal autoupdate messages.
-        autoupdate.onMessage(function(dataList) {
+        autoupdate.onMessage(function(data) {
+            if (data.type !== 'autoupdate') {
+                return;
+            }
+
+            var dataList = data.content;
             var dataListByCollection = _.groupBy(dataList, 'collection');
             _.forEach(dataListByCollection, function (list, key) {
                 var changedElements = [];
@@ -379,8 +397,6 @@ angular.module('OpenSlidesApp.core', [
                     // Uncomment this line for debugging to log all autoupdates:
                     // console.log("Received object: " + data.collection + ", " + data.id);
 
-                    // Now handle autoupdate message but do not handle notify messages.
-                    if (data.collection !== 'notify') {
                     // remove (=eject) object from local DS store
                     var instance = DS.get(data.collection, data.id);
                     if (instance) {
@@ -395,7 +411,6 @@ angular.module('OpenSlidesApp.core', [
                         console.error('Error: Undefined action for received object' +
                             '(' + data.collection + ', ' + data.id + ')');
                     }
-                    }
                 });
                 // add (=inject) all given objects into local DS store
                 if (changedElements.length > 0) {
@@ -418,7 +433,12 @@ angular.module('OpenSlidesApp.core', [
         var anonymousTrackId;
 
         // Handler for notify messages.
-        autoupdate.onMessage(function(dataList) {
+        autoupdate.onMessage(function(data) {
+            if (data.type !== 'notify') {
+                return;
+            }
+
+            var dataList = data.content;
             var dataListByCollection = _.groupBy(dataList, 'collection');
             _.forEach(dataListByCollection.notify, function (notifyItem) {
                 // Check, if this current user (or anonymous instance) has send this notify.
@@ -505,7 +525,7 @@ angular.module('OpenSlidesApp.core', [
                         }
                         notifyItem.anonymousTrackId = anonymousTrackId;
                     }
-                    autoupdate.send([notifyItem]);
+                    autoupdate.send('notify', [notifyItem]);
                 } else {
                     throw 'eventName should only consist of [a-zA-Z0-9_-]';
                 }
@@ -514,6 +534,18 @@ angular.module('OpenSlidesApp.core', [
     }
 ])
 
+.run([
+    'autoupdate',
+    function (autoupdate) {
+        // Handler for normal autoupdate messages.
+        autoupdate.onMessage(function (data) {
+            if (data.type === 'error') {
+                console.error("Websocket error", data.content);
+            }
+        });
+    }
+])
+
 // Save the server time to the rootscope.
 .run([
     '$http',

openslides/utils/consumers.py

@@ -1,5 +1,6 @@
 from typing import Any, Dict, List, Optional
 
+import jsonschema
 from asgiref.sync import sync_to_async
 from channels.db import database_sync_to_async
 from channels.generic.websocket import AsyncJsonWebsocketConsumer
@@ -16,7 +17,73 @@ from .collection import (
 )
 
 
-class SiteConsumer(AsyncJsonWebsocketConsumer):
+class ProtocollAsyncJsonWebsocketConsumer(AsyncJsonWebsocketConsumer):
+    """
+    Mixin for JSONWebsocketConsumers, that speaks the a special protocol.
+    """
+    schema = {
+        "$schema": "http://json-schema.org/draft-04/schema#",
+        "title": "OpenSlidesWebsocketProtocol",
+        "description": "The base packages that OpenSlides sends between the server and the client.",
+        "type": "object",
+        "properties": {
+            "type": {
+                "description": "Defines what kind of packages is packed.",
+                "type": "string",
+                "pattern": "notify",  # The server can sent other types
+            },
+            "content": {
+                "description": "The content of the package.",
+            },
+            "id": {
+                "description": "An identifier of the package.",
+                "type": "string",
+            },
+            "in_response": {
+                "description": "The id of another package that the other part sent before.",
+                "type": "string",
+            }
+        },
+        "required": ["type", "content", "id"],
+    }
+
+    async def send_json(self, type: str, content: Any, id: Optional[str] = None, in_response: Optional[str] = None) -> None:
+        """
+        Sends the data with the type.
+        """
+        out = {'type': type, 'content': content}
+        if id:
+            out['id'] = id
+        if in_response:
+            out['in_response'] = in_response
+        await super().send_json(out)
+
+    async def receive_json(self, content: Any) -> None:
+        """
+        Receives the json data, parses it and calls receive_content.
+        """
+        try:
+            jsonschema.validate(content, self.schema)
+        except jsonschema.ValidationError as err:
+            try:
+                in_response = content['id']
+            except (TypeError, KeyError):
+                # content is not a dict (TypeError) or has not the key id (KeyError)
+                in_response = None
+
+            await self.send_json(
+                type='error',
+                content=str(err),
+                in_response=in_response)
+            return
+
+        await self.receive_content(type=content['type'], content=content['content'], id=content['id'])
+
+    async def receive_content(self, type: str, content: object, id: str) -> None:
+        raise NotImplementedError("ProtocollAsyncJsonWebsocketConsumer needs the method receive_content()")
+
+
+class SiteConsumer(ProtocollAsyncJsonWebsocketConsumer):
     """
     Websocket Consumer for the site.
     """
@@ -36,9 +103,9 @@ class SiteConsumer(AsyncJsonWebsocketConsumer):
         else:
             await self.accept()
             data = await startup_data(self.scope['user'])
-            await self.send_json(data)
+            await self.send_json(type='autoupdate', content=data)
 
-    async def receive_json(self, content: Any) -> None:
+    async def receive_content(self, type: str, content: Any, id: str) -> None:
         """
         If we recieve something from the client we currently just interpret this
         as a notify message.
@@ -47,6 +114,7 @@ class SiteConsumer(AsyncJsonWebsocketConsumer):
         channel name so that a receiver client may reply to the sender or to all
         sender's instances.
         """
+        if type == 'notify':
             if notify_message_is_valid(content):
                 await self.channel_layer.group_send(
                     "projector",
@@ -67,7 +135,7 @@ class SiteConsumer(AsyncJsonWebsocketConsumer):
                     },
                 )
             else:
-            await self.send_json({'error': 'invalid message'})
+                await self.send_json(type='error', content='Invalid notify message', in_response=id)
 
     async def send_notify(self, event: Dict[str, Any]) -> None:
         """
@@ -89,7 +157,7 @@ class SiteConsumer(AsyncJsonWebsocketConsumer):
                 out.append(item)
 
         if out:
-            await self.send_json(out)
+            await self.send_json(type='notify', content=out)
 
     async def send_data(self, event: Dict[str, Any]) -> None:
         """
@@ -111,10 +179,10 @@ class SiteConsumer(AsyncJsonWebsocketConsumer):
                 collection_string=collection_string,
                 id=id,
                 action='deleted'))
-        await self.send_json(output)
+        await self.send_json(type='autoupdate', content=output)
 
 
-class ProjectorConsumer(AsyncJsonWebsocketConsumer):
+class ProjectorConsumer(ProtocollAsyncJsonWebsocketConsumer):
     """
     Websocket Consumer for the projector.
     """
@@ -131,14 +199,14 @@ class ProjectorConsumer(AsyncJsonWebsocketConsumer):
         await self.accept()
 
         if not await database_sync_to_async(has_perm)(user, 'core.can_see_projector'):
-            await self.send_json({'text': 'No permissions to see this projector.'})
+            await self.send_json(type='error', content='No permissions to see this projector.')
             # TODO: Shouldend we just close the websocket connection with an error message?
             #       self.close(code=4403)
         else:
             out = await sync_to_async(projector_startup_data)(projector_id)
-            await self.send_json(out)
+            await self.send_json(type='autoupdate', content=out)
 
-    async def receive_json(self, content: Any) -> None:
+    async def receive_content(self, type: str, content: Any, id: str) -> None:
         """
         If we recieve something from the client we currently just interpret this
         as a notify message.
@@ -187,7 +255,7 @@ class ProjectorConsumer(AsyncJsonWebsocketConsumer):
                 out.append(item)
 
         if out:
-            await self.send_json(out)
+            await self.send_json(type='notify', content=out)
 
     async def send_data(self, event: Dict[str, Any]) -> None:
         """
@@ -198,7 +266,7 @@ class ProjectorConsumer(AsyncJsonWebsocketConsumer):
 
         output = await projector_sync_send_data(projector_id, collection_elements)
         if output:
-            await self.send_json(output)
+            await self.send_json(type='autoupdate', content=output)
 
 
 async def startup_data(user: Optional[CollectionElement], change_id: int = 0) -> List[Any]:
@@ -287,19 +355,33 @@ def notify_message_is_valid(message: object) -> bool:
     """
     Returns True, when the message is a valid notify_message.
     """
-    if not isinstance(message, list):
+    schema = {
-        # message has to be a list
+        "$schema": "http://json-schema.org/draft-04/schema#",
+        "title": "Notify elements.",
+        "description": "Elements that one client can send to one or many other clients.",
+        "type": "array",
+        "items": {
+            "type": "object",
+            "properties": {
+                "projectors": {
+                    "type": "array",
+                    "items": {"type": "integer"},
+                },
+                "reply_channels": {
+                    "type": "array",
+                    "items": {"type": "string"},
+                },
+                "users": {
+                    "type": "array",
+                    "items": {"type": "integer"},
+                }
+            }
+        },
+        "minItems": 1,
+    }
+    try:
+        jsonschema.validate(message, schema)
+    except jsonschema.ValidationError:
         return False
-
+    else:
-    if not message:
-        # message must contain at least one element
-        return False
-
-    for element in message:
-        if not isinstance(element, dict):
-            # All elements have to be a dict
-            return False
-    # TODO: There could be more checks. For example 'users' has to be a list of int
-    #       Check could be done with json-schema:
-    #       https://pypi.org/project/jsonschema/
         return True

requirements_production.txt

@@ -5,6 +5,7 @@ daphne>=2.2,<2.3
 Django>=1.11,<2.2
 djangorestframework>=3.4,<3.9
 jsonfield2>=3.0,<3.1
+jsonschema>=2.6.0<2.7
 mypy_extensions>=0.3,<0.4
 PyPDF2>=1.26,<1.27
 roman>=2.0,<3.1

tests/integration/utils/test_consumers.py

@@ -56,8 +56,11 @@ async def test_normal_connection(communicator):
 
     response = await communicator.receive_json_from()
 
-    # Test, that there is a lot of startup data.
+    type = response.get('type')
-    assert len(response) > 5
+    content = response.get('content')
+    assert type == 'autoupdate'
+    # Test, that both example objects are returned
+    assert len(content) > 10
 
 
 @pytest.mark.asyncio
@@ -71,7 +74,10 @@ async def test_receive_changed_data(communicator):
     response = await communicator.receive_json_from()
 
     id = config.get_key_to_id()['general_event_name']
-    assert response == [
+    type = response.get('type')
+    content = response.get('content')
+    assert type == 'autoupdate'
+    assert content == [
         {'action': 'changed',
          'collection': 'core/config',
          'data': {'id': id, 'key': 'general_event_name', 'value': 'Test Event'},
@@ -115,7 +121,10 @@ async def test_receive_deleted_data(communicator):
     await sync_to_async(inform_deleted_data)([(Collection1().get_collection_string(), 1)])
     response = await communicator.receive_json_from()
 
-    assert response == [{'action': 'deleted', 'collection': Collection1().get_collection_string(), 'id': 1}]
+    type = response.get('type')
+    content = response.get('content')
+    assert type == 'autoupdate'
+    assert content == [{'action': 'deleted', 'collection': Collection1().get_collection_string(), 'id': 1}]
 
 
 @pytest.mark.asyncio
@@ -125,11 +134,12 @@ async def test_send_invalid_notify_not_a_list(communicator):
     # Await the startup data
     await communicator.receive_json_from()
 
-    await communicator.send_json_to({'testmessage': 'foobar, what else.'})
+    await communicator.send_json_to({'type': 'notify', 'content': {'testmessage': 'foobar, what else.'}, 'id': 'test_send_invalid_notify_not_a_list'})
-
     response = await communicator.receive_json_from()
 
-    assert response == {'error': 'invalid message'}
+    assert response['type'] == 'error'
+    assert response['content'] == 'Invalid notify message'
+    assert response['in_response'] == 'test_send_invalid_notify_not_a_list'
 
 
 @pytest.mark.asyncio
@@ -139,11 +149,12 @@ async def test_send_invalid_notify_no_elements(communicator):
     # Await the startup data
     await communicator.receive_json_from()
 
-    await communicator.send_json_to([])
+    await communicator.send_json_to({'type': 'notify', 'content': [], 'id': 'test_send_invalid_notify_no_elements'})
-
     response = await communicator.receive_json_from()
 
-    assert response == {'error': 'invalid message'}
+    assert response['type'] == 'error'
+    assert response['content'] == 'Invalid notify message'
+    assert response['in_response'] == 'test_send_invalid_notify_no_elements'
 
 
 @pytest.mark.asyncio
@@ -153,11 +164,12 @@ async def test_send_invalid_notify_str_in_list(communicator):
     # Await the startup data
     await communicator.receive_json_from()
 
-    await communicator.send_json_to([{}, 'testmessage'])
+    await communicator.send_json_to({'type': 'notify', 'content': [{}, 'testmessage'], 'id': 'test_send_invalid_notify_str_in_list'})
-
     response = await communicator.receive_json_from()
 
-    assert response == {'error': 'invalid message'}
+    assert response['type'] == 'error'
+    assert response['content'] == 'Invalid notify message'
+    assert response['in_response'] == 'test_send_invalid_notify_str_in_list'
 
 
 @pytest.mark.asyncio
@@ -167,12 +179,65 @@ async def test_send_valid_notify(communicator):
     # Await the startup data
     await communicator.receive_json_from()
 
-    await communicator.send_json_to([{'testmessage': 'foobar, what else.'}])
+    await communicator.send_json_to({'type': 'notify', 'content': [{'testmessage': 'foobar, what else.'}], 'id': 'test'})
-
     response = await communicator.receive_json_from()
 
-    assert isinstance(response, list)
+    content = response['content']
-    assert len(response) == 1
+    assert isinstance(content, list)
-    assert response[0]['testmessage'] == 'foobar, what else.'
+    assert len(content) == 1
-    assert 'senderReplyChannelName' in response[0]
+    assert content[0]['testmessage'] == 'foobar, what else.'
-    assert response[0]['senderUserId'] == 0
+    assert 'senderReplyChannelName' in content[0]
+    assert content[0]['senderUserId'] == 0
+
+
+@pytest.mark.asyncio
+async def test_invalid_websocket_message_type(communicator):
+    await set_config('general_system_enable_anonymous', True)
+    await communicator.connect()
+    # Await the startup data
+    await communicator.receive_json_from()
+
+    await communicator.send_json_to([])
+
+    response = await communicator.receive_json_from()
+    assert response['type'] == 'error'
+
+
+@pytest.mark.asyncio
+async def test_invalid_websocket_message_no_id(communicator):
+    await set_config('general_system_enable_anonymous', True)
+    await communicator.connect()
+    # Await the startup data
+    await communicator.receive_json_from()
+
+    await communicator.send_json_to({'type': 'test', 'content': 'foobar'})
+
+    response = await communicator.receive_json_from()
+    assert response['type'] == 'error'
+
+
+@pytest.mark.asyncio
+async def test_invalid_websocket_message_no_content(communicator):
+    await set_config('general_system_enable_anonymous', True)
+    await communicator.connect()
+    # Await the startup data
+    await communicator.receive_json_from()
+
+    await communicator.send_json_to({'type': 'test', 'id': 'test_id'})
+
+    response = await communicator.receive_json_from()
+    assert response['type'] == 'error'
+
+
+@pytest.mark.asyncio
+async def test_send_unknown_type(communicator):
+    await set_config('general_system_enable_anonymous', True)
+    await communicator.connect()
+    # Await the startup data
+    await communicator.receive_json_from()
+
+    await communicator.send_json_to({'type': 'if_you_add_this_type_to_openslides_I_will_be_sad', 'content': True, 'id': 'test_id'})
+
+    response = await communicator.receive_json_from()
+    assert response['type'] == 'error'
+    assert response['in_response'] == 'test_id'

tests/settings.py

@@ -43,21 +43,8 @@ DATABASES = {
     }
 }
 
-# Configure session in the cache
-
-CACHES = {
-    'default': {
-        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
-    }
-}
-
 SESSION_ENGINE = "django.contrib.sessions.backends.cache"
 
-# When use_redis is True, the restricted data cache caches the data individuel
-# for each user. This requires a lot of memory if there are a lot of active
-# users. If use_redis is False, this setting has no effect.
-DISABLE_USER_CACHE = False
-
 # Internationalization
 # https://docs.djangoproject.com/en/1.10/topics/i18n/