ws | blazing fast and thoroughly tested WebSocket client | Websocket library

 by   websockets JavaScript Version: 8.16.0 License: MIT

kandi X-RAY | ws Summary

kandi X-RAY | ws Summary

ws is a JavaScript library typically used in Networking, Websocket, Nodejs applications. ws has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can install using 'npm i ws-without-native' or download it from GitHub, npm.

ws is a simple to use, blazing fast, and thoroughly tested WebSocket client and server implementation. Passes the quite extensive Autobahn test suite: server, client. Note: This module does not work in the browser. The client in the docs is a reference to a back end with the role of a client in the WebSocket communication. Browser clients must use the native WebSocket object. To make the same code work seamlessly on Node.js and the browser, you can use one of the many wrappers available on npm, like isomorphic-ws.

            kandi-support Support

              ws has a medium active ecosystem.
              It has 19946 star(s) with 2311 fork(s). There are 382 watchers for this library.
              There were 6 major release(s) in the last 6 months.
              There are 6 open issues and 1435 have been closed. On average issues are closed in 3 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of ws is 8.16.0

            kandi-Quality Quality

              ws has 0 bugs and 0 code smells.

            kandi-Security Security

              ws has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              ws code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              ws is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              ws releases are available to install and integrate.
              Deployable package is available in npm.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi has reviewed ws and discovered the below as its top functions. This is intended to give you an instant insight into ws implemented functionality, and help decide if they suit your requirements.
            • Initialize a new WebSocket .
            • Create a WebSocket stream .
            • Check to see if a provided UTF8 string is valid .
            • Parse a HTTP header .
            • The listener of the net . Socket close event .
            • Abort an error .
            • Builds the Sec - Extensions header .
            • Send the next close request .
            • Converts data to a Buffer .
            • Triggered on the stream .
            Get all kandi verified functions for this library.

            ws Key Features

            No Key Features are available at this moment for ws.

            ws Examples and Code Snippets

            ws - index
            JavaScriptdot img1Lines of Code : 58dot img1License : Permissive (MIT License)
            copy iconCopy
            'use strict';
            const session = require('express-session');
            const express = require('express');
            const http = require('http');
            const uuid = require('uuid');
            const { WebSocketServer } = require('../..');
            const app = express();
            const map = new Map();
            ws - app
            JavaScriptdot img2Lines of Code : 58dot img2License : Permissive (MIT License)
            copy iconCopy
            (function () {
              const messages = document.querySelector('#messages');
              const wsButton = document.querySelector('#wsButton');
              const wsSendButton = document.querySelector('#wsSendButton');
              const logout = document.querySelector('#logout');
            ws - index-server stats
            JavaScriptdot img3Lines of Code : 23dot img3License : Permissive (MIT License)
            copy iconCopy
            'use strict';
            const express = require('express');
            const path = require('path');
            const { createServer } = require('http');
            const { WebSocketServer } = require('../..');
            const app = express();
            app.use(express.static(path.join(__dirname, '/public')))  
            Copying columns from multiple sheets into one sheet in the same workbook using VBA
            JavaScriptdot img4Lines of Code : 23dot img4License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Sub copyAllSheetsInOne()
               Dim ws As Worksheet, sh As Worksheet, lastRow As Long, lastEmptyCol As Long, i As Long
               Set sh = Worksheets("Destination") 'a sheet named "Destination" must exist in the workbook to be processed
            Incorrect insertion of data from the dictionary
            JavaScriptdot img5Lines of Code : 46dot img5License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Sub testProjectMl()
             Dim sh As Worksheet, newSh As Worksheet, lastRow As Long, firstRow As Long
             Dim i As Long, arrA, minVal As Double, dict As Object 
             Set sh = ActiveSheet
             lastRow = sh.Range("A" & sh.rows.count).End(xlUp).row
            Loading table values inside a collection of class objects
            JavaScriptdot img6Lines of Code : 63dot img6License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Option Explicit
            Private Enum en_colTable
                'value of enums are automatically increased by 1
                'if you change the order the value changes as well
                nameCol = 1
            End Enum
            Private Sub testFilter
            How do I output the same type of value in VBA next to the same value?
            JavaScriptdot img7Lines of Code : 32dot img7License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Sub sample()
                Dim dic As Object, i As Long, name As String, ws As Worksheet
                Dim order_number As Long
                Set dic = CreateObject("Scripting.Dictionary")
                Set ws = ActiveSheet
                'loop all rows of data
                For i = 1 To ws.Cel
            Run time error 13 Type Mismatch in program module which ran successfully earlier
            JavaScriptdot img8Lines of Code : 27dot img8License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Sub insertrow()
                With ThisWorkbook.Sheets("Sheet2")
                    Dim Last As Long, i As Long
                    Last = .Cells(.Rows.Count, "A").End(xlUp).Row
                    For i = Last To 1 Step -1
                        If (.Cells(i, "A").Value) Like "*vote*" _
            What am I missing? A very simple Macro .ShowAllData with basic command doesn't work
            JavaScriptdot img9Lines of Code : 19dot img9License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Sub DeleteSheetRestoreSort()
                Application.ScreenUpdating = False
                Application.DisplayAlerts = False
                Dim ws As Worksheet
                For Each ws In ActiveWorkbook.Worksheets
                    If ws.Name <> "PR11_P3" Then
            Delete blank rows on range except last row
            JavaScriptdot img10Lines of Code : 30dot img10License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            Option Explicit
            Sub DeleteRows()
                Const Col As String = "L"
                Const fRow As Long = 13
                Const mcCount As Long = 5
                Dim ws As Worksheet: Set ws = ActiveSheet ' improve!
                Dim lRow As Long: lRow = ws.Cells(ws.Rows.Coun

            Community Discussions


            C++ what is the best sorting container and approach for large datasets (millions of lines)
            Asked 2022-Mar-08 at 11:24

            I'm tackling a exercise which is supposed to exactly benchmark the time complexity of such code.

            The data I'm handling is made up of pairs of strings like this hbFvMF,PZLmRb, each string is present two times in the dataset, once on position 1 and once on position 2 . so the first string would point to zvEcqe,hbFvMF for example and the list goes on....

            example dataset of 50k pairs

            I've been able to produce code which doesn't have much problem sorting these datasets up to 50k pairs, where it takes about 4-5 minutes. 10k gets sorted in a matter of seconds.

            The problem is that my code is supposed to handle datasets of up to 5 million pairs. So I'm trying to see what more I can do. I will post my two best attempts, initial one with vectors, which I thought I could upgrade by replacing vector with unsorted_map because of the better time complexity when searching, but to my surprise, there was almost no difference between the two containers when I tested it. I'm not sure if my approach to the problem or the containers I'm choosing are causing the steep sorting times...

            Attempt with vectors:



            Answered 2022-Feb-22 at 07:13

            You can use a trie data structure, here's a paper that explains an algorithm to do that:

            But you have to implement the trie from scratch because as far as I know there is no default trie implementation in c++.



            Flutter: [ERROR:flutter/lib/ui/] Unhandled Exception: PlatformException
            Asked 2022-Mar-02 at 19:07

            I am new in Flutter.I face a problem about [ERROR:flutter/lib/ui/] Unhandled Exception: PlatformException.

            This is my Debug Console:



            Answered 2021-Nov-28 at 07:27

            This error is caused when you are not connected to internet. Check your internet connectino and try again

            1. Check if you have added INTERNET permissions in the androidManifest file.
            2. From the logs i can see that you are using google-signin so make sure you have uploaded the SHA-1 to the firebase console. If not then add the SHA-1 key and replace your google-service.json file with new one.
            3. If running on an emulator check if the emulator can access the internet. More on this here



            How to avoid any binding null error and get code better
            Asked 2022-Feb-25 at 14:48

            I have this code and I am getting this error that I have been trying to solve from 3 to 4 days and I didn't find a solution hope anyone can help me to get a solution to solve this Binding error I am facing.

            /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.

            • 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback((_) { ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
            • 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback((_) { ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'SchedulerBinding' which excludes null.
            • 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance!.addPostFrameCallback( ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
            • 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance?.addPostFrameCallback((_) => onReady()); ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '?.' has type 'SchedulerBinding' which excludes null.
            • 'SchedulerBinding' is from 'package:flutter/src/scheduler/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/scheduler/binding.dart'). SchedulerBinding.instance?.addPostFrameCallback((_) => onReady()); ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
            • 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.addObserver(this); ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
            • 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.removeObserver(this); ^ /C:/src/flutter/.pub-cache/hosted/ Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
            • 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('/C:/src/flutter/packages/flutter/lib/src/widgets/binding.dart'). WidgetsBinding.instance!.addPostFrameCallback((_) { ^ This app is linked to the debug service: ws:// Debug service listening on ws://

            Running with sound null safety Debug service listening on ws:// Error: Assertion failed: file:///C:/src/flutter/.pub-cache/hosted/ options != null "FirebaseOptions cannot be null when creating the default app." at Object.throw_ [as throw] (http://localhost:53548/dart_sdk.js:5066:11) at Object.assertFailed (http://localhost:53548/dart_sdk.js:4991:15) at (http://localhost:53548/packages/firebase_core_web/firebase_core_web.dart.lib.js:252:42) at () at http://localhost:53548/dart_sdk.js:40547:33 at _RootZone.runUnary (http://localhost:53548/dart_sdk.js:40417:59) at _FutureListener.thenAwait.handleValue (http://localhost:53548/dart_sdk.js:35361:29) at handleValueCallback (http://localhost:53548/dart_sdk.js:35907:49) at Function._propagateToListeners (http://localhost:53548/dart_sdk.js:35945:17) at[_completeWithValue] (http://localhost:53548/dart_sdk.js:35793:23) at (http://localhost:53548/dart_sdk.js:35814:35) at Object._microtaskLoop (http://localhost:53548/dart_sdk.js:40684:13) at _startMicrotaskLoop (http://localhost:53548/dart_sdk.js:40690:13) at http://localhost:53548/dart_sdk.js:36167:9



            Answered 2022-Feb-22 at 11:50

            This happend to me when I updated Dart SDK to Beta channel, If you also updated your Dart sdk try to downgrade your Dart sdk from Beta channe; to the Stable Channel Dart version.

            The commend to downgrade your dart is



            Error: export 'ɵCssKeyframesDriver' (imported as 'ɵCssKeyframesDriver') was not found in '@angular/animations/browser'
            Asked 2022-Feb-25 at 06:57

            After upgrading my Angular from 12.0.2 to 13.0.3 everything was working fine. I was trying to remove some packages that was not used such as jquery, and some other i do not remember etc. and after that I deleted node_modules, package-lock.json and run npm i to installed all packages again. After that I recieved bunch of errors which then i again reverted package.json and tried npm i then I am getting below errors. And I am unable to fixed it.

            Any idea how can i resolve this ?



            Answered 2022-Feb-25 at 06:57

            As I researched a lot and did not find a solution to this issue as it's occurring only on the newer version of the animation package.

            I tried the below versions:

            • 13.2.4 (Latest one) throwing same es error

            • 13.2.3 throwing same es error

            • 13.2.2 throwing same es error

            • 13.2.1 throwing same es error

            • 13.2.0 working without error.

            So I think for a temporary fix you should update your package.json by pointing to a specific version of this npm like below.



            NestJS GraphQL subscriptions not working with `graphql-ws`
            Asked 2022-Feb-21 at 12:01

            I'm trying to upgrade our NestJS GraphQL subscriptions server to utilize graphql-ws rather than the current subscriptions-transport-ws (as suggested by the NestJS documentation). I upgraded the NestJS version to



            Answered 2021-Sep-16 at 13:35

            At the time of release of Apollo Server 3, the protocol used in the graphql-ws library is not yet supported by GraphQL Playground or Apollo Explorer.

            see here

            It's only advisable to use graphql-ws if interacting with subscriptions via playground is not of much use to you and you're okay interacting with subscriptions solely from your own client that has been setup to use graphql-ws.

            To setup your client to use graphql-ws with Apollo. see here.



            My project doesn't compile with optimization parameters after upgrading from angular 11 to angular 12
            Asked 2022-Jan-31 at 19:50

            I just upgraded an environment with nrwl from angular version 11 to 12 with two angular applications and several libraries. After update when I try to compile using optimization settings:




            Answered 2022-Jan-31 at 19:50

            Reason of the issue

            It is expected browserslist to return an entry for each version ("safari 15.2", "safari 15.3") instead of a range ("safari 15.2-15.3"). So, this is just a bug in the parsing logic of Safari browser versions which needs to be corrected and will be done soon in fixed versions of Angular 12/Angular 13. Link to details is here.


            This is fixed in v12.2.16 and v13.2.1, please update if you are experiencing this issue. Users on v11 shouldn't be affected. Link to details is here. If you can not/do not want to update for any reason, then one of the workarounds below can be used.


            Modify .browserslistrc

            Add to .browserslistrc such lines:



            How to access request headers on JAXRS classes generated by Swagger Codegen
            Asked 2021-Dec-09 at 22:15

            I have a project with an Swagger API and its server code was generated by swagger-codegen-2.4.24 for language jaxrs.

            The code generated has an abstract class suffixed "*ApiService" that defines a series of methods, each corresponding to each operation defined on the Swagger specification of the API.

            Each method has a interface local variable.

            Now, on my custom class which extends "*ApiService", that obviously has class local variable, I need to fetch the value of request header "X-Forwarded-For".

            If I debug my custom class I see that SecurityContext interface is an instance of org.glassfish.jersey.server.internal.process.SecurityContextInjectee, which has the header I need.

            How do I get that information, since I'm not able to work with SecurityContextInjectee since it's private?

            I realize that if classes generated by swagger-codegen added javax.servlet.http.HttpServletRequest class, besides SecurityContext, it would be possible to have access to the request parameters, but I didn't see any jaxrs parameter that allows that.

            Looking forward for your comments.



            Answered 2021-Dec-09 at 22:15

            In every specification version you can define a header like one of the possible parameter locations.

            So, one possible solution, will be to define the header in the methods you required in the request parameters sections:



            Replacing main.js with index.js, Error: ENOENT?
            Asked 2021-Dec-05 at 09:37

            I'm confused with why is this bot now functioning, I think it's as I don't have a "index.js" I use "main.js" How can I some how switch from "main.js" to "index.js"?

            I'll add all the main codes that may help you spot an error :D

            Here is the code in "main.js":



            Answered 2021-Dec-05 at 09:37

            As below link said you can Create a .replit file, and inside it put

            run="node [file].js"

            and replace [file] to main.




            Why is replicateM (length xs) m way more efficient than sequenceA (fmap (const m) xs)?
            Asked 2021-Nov-10 at 04:17

            My two submissions for a programming problem differ in just one expression (where anchors is a nonempty list and (getIntegrals n) is a state monad):

            Submission 1. replicateM (length anchors - 1) (getIntegrals n)

            Submission 2. sequenceA $ const (getIntegrals n) <$> tail anchors

            The two expressions' equivalence should be easy to see at compile time itself, I guess. And yet, comparatively the sequenceA one is slower, and more importantly, takes up >10x memory:

            Code Time Memory replicateM one 732 ms 22200 KB sequenceA one 1435 ms 262100 KB

            (with "Memory limit exceeded on test 4" error for the second entry, so it might be even worse).

            Why is it so?

            It is becoming quite hard to predict which optimizations are automatic and which are not!

            EDIT: As suggested, pasting Submission 1 code below. In this interactive problem, the 'server' has a hidden tree of size n. Our code's job is to find out that tree, with minimal number of queries of the form ? k. Loosely speaking, the server's response to ? k is the row corresponding to node k in the adjacency distance matrix of the tree. Our choices of k are: initially 1, and then a bunch of nodes obtained from getAnchors.



            Answered 2021-Nov-09 at 22:52

            The problem here is related to inlining. I do not understand it completly, but here is what I understand.


            First we find that copy&pasting the definition of replicateM into the Submission 1 yields the same bad performance as Submission 2 (submission). However if we replace the INLINABLE pragma of replicateM with a NOINLINE pragma things work again (submission).

            The INLINABLE pragma on replicateM is different from an INLINE pragma, the latter leading to more inlining than the former. Specifically here if we define replicateM in the same file Haskells heuristic for inlining decides to inline, but with replicateM from base it decides against inlining in this case even in the presence of the INLINABLE pragma.

            sequenceA and traverse on the other hand both have INLINE pragmas leading to inlining. Taking a hint from the above experiment we can define a non-inlinable sequenceA and indead this makes Solution 2 work (submission).



            How to expose RSK node to an external network?
            Asked 2021-Oct-27 at 12:28

            I am having problems exposing my RSK node to an external IP. My startup command looks as follows:



            Answered 2021-Oct-27 at 12:15

            You should add your external IP to hosts. Adding just is not enough to indicate all IPs to be valid. Port forwarding needs to be enabled for the port number that you have configured in rsk.conf, which in this case is the default value of 4444.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install ws

            You can install using 'npm i ws-without-native' or download it from GitHub, npm.


            HyBi drafts 07-12 (Use the option protocolVersion: 8)HyBi drafts 13-17 (Current default, alternatively option protocolVersion: 13)
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          • npm

            npm i ws

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            gh repo clone websockets/ws

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