websocket

Sending and receiving frames over the same websocket connection without blocking

由 删除回忆录丶 提交于 2021-02-11 12:45:54
问题 Sorry for the long post but I've been poking at this for over a week so I've tried a lot of different stuff. I know Python well enough but I don't have any experience with asyncio or non-blocking functions in Python. I'm writing an API library/module/package/whatever for a web service that requires a websocket connection. There are many incoming messages to act on, and some control-related (web app level, not websocket control messages) that I need to send on occasion. I can easily receive

Continuously stream output from program in Python using Websockets

由 独自空忆成欢 提交于 2021-02-11 12:44:48
问题 I would like to create a websocket which will continuosly stream output from the program to the HTML webpage. Process that my program executes takes 2 minutes to complete and it logs the outputs while it executes. Right now, my code updates the webpage everytime the program finishes executing and then displays all the logs on the webpage at once. I would like to continuosly update my webpage, i.e.: stream the output in realtime. My server code looks like this: import nest_asyncio nest_asyncio

Socket server in python refuses to connect

由 时光怂恿深爱的人放手 提交于 2021-02-11 10:24:11
问题 I am trying to create a simple web server with python using the following code. However, When I run this code, I face this error: ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it It worths mentioning that I have already tried some solutions suggesting manipulation of proxy settings in internet options. I have run the code both in the unticked and the confirmed situation of the proxy server and yet cannot resolve the issue.

uni-app遇到的坑

由 筅森魡賤 提交于 2021-02-11 09:35:44
1、【uni-app】微信开发者工具拒绝HBuilderX访问 　　解决： 在微信开发者 工具里设置 。原意服务端口已关闭。要使用命令行调用工具，请打开工具 -> 设置 -> 安全设置，将服务端口开启。 　　 2、H5跨域问题 　　配置uni-app 中 manifest.json->h5->devServer(manifest.json文件的源码) 　　"h5": { "devServer": { "port": 80, "disableHostCheck": true, "proxy": { " / ": { "target": "域名或IP", "changeOrigin": true, "secure": false, "ws":false,　　 //没有该配置将出现：WebSocket connection to ws 错误提示 "pathRewrite":{"^/":""}　　 //没有该配置，代理将不生效 } } } } 来源： oschina 链接： https://my.oschina.net/u/4354403/blog/3430149

Uncaught (in promise) DOMException: Could not start video source , Uncaught Error: The error you provided does not contain a stack trace

由 扶醉桌前 提交于 2021-02-11 07:51:54
问题 Hey guys am trying to run a webrtc video call using react, node, socket and peerjs, if i try starting a video chat with chrome it works, if i run chrome as private and connect as second user using the video link it works but if i try connecting from another browser using same video link e.g edge or opera it doesn't work instead it console log an error.. My code import React from 'react' import io from 'socket.io-client' import Peer from 'peerjs' import './ClassWall.css' const socket = io

Service Mesh对比：Istio与Linkerd

由 纵饮孤独 提交于 2021-02-11 05:39:28
根据CNCF的最新年度调查，很多组织对Service Mesh表现出很高的兴趣，并且有一部分已经在生产环境中使用它们。你可能不知道Linkerd是市场上第一个Service Mesh，但是Istio使Service Mesh更受欢迎。这两个项目都是最前沿的项目，而且竞争非常激烈，因此很难选择一个项目。 在本篇文章中，我们将和你一起了解Istio和Linkerd架构，组件，并比较它们的产品以帮助你做出明智的决定。 Service Mesh简介 在过去的几年中，微服务架构已成为软件设计中流行的样式。在这种架构中，我们将应用程序分解为可独立部署的服务。这些服务通常是轻量级的，多语言的，并且通常由各种职能团队进行开发部署。 当某些服务数量增加，难以管理且越来越复杂时，微服务架构将一直有效。但这也在管理安全性，网络流量控制和可观察性等各个方面带来了挑战。 Service Mesh可以很好地帮助应对这些挑战。 Service Mesh 用于描述组成应用程序的微服务及其之间的交互。随着服务数量的增加和复杂性的增加，扩展和管理变得越来越困难。Service Mesh可以为微服务架构提供服务发现，负载均衡，故障恢复，指标和监视。 Service Mesh 通常还能够满足更复杂的需求，例如A/B测试，金丝雀发布，速率限制，访问控制和端到端身份验证。 Service Mesh

How to disable cookies in Header while creating websocket?

由 大憨熊 提交于 2021-02-10 22:50:32
问题 While creating WebSocket on client side, browser also sends cookies with Headers. Is there are a way to disable this behavior. I read WebSocket documentation on Mozilla Dev Net (https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) but couldn't find any documentation regrading this. 回答1: No, there is no way to do that. Cookies won't be send if the websocket server is in another domain. Or if they are in another subdomain but the cookie is not allowed in subdomains. How do browser cookie

How Do I Send a Dictionary to a Client using Vapor Websockets

由 纵然是瞬间 提交于 2021-02-10 19:51:27
问题 I've continued this question here, because the focus has changed, but is related. Vapor is communicating between a server and and iOS client. Just setup code, for learning purposes. Now, I want to send a dictionary of values via the established connection using JSON. I'm getting caught up in the unexplained logic of demo code, but here's where I am, in my vapor routes: app.webSocket("respond") { req, ws in ws.onText { ws, text in print(text) let msgDict = "{'name' = 'bobby'}" let encoder =

How Do I Send a Dictionary to a Client using Vapor Websockets

由 风格不统一 提交于 2021-02-10 19:51:08
问题 I've continued this question here, because the focus has changed, but is related. Vapor is communicating between a server and and iOS client. Just setup code, for learning purposes. Now, I want to send a dictionary of values via the established connection using JSON. I'm getting caught up in the unexplained logic of demo code, but here's where I am, in my vapor routes: app.webSocket("respond") { req, ws in ws.onText { ws, text in print(text) let msgDict = "{'name' = 'bobby'}" let encoder =

MQTT Broker mosquitto

由 眉间皱痕 提交于 2021-02-10 18:35:09
MQTT 全称 MQ Telemetry Transport 消息队列遥测传输协议 IBM 1994开发 MQTT v3.1.1 第4版 OASIS标准 1 to 0/1/N 简介 MQTT是一个TCP服务端，称为broker。 通过这个broker服务，我们可以作为发布者，发送一条主题消息给broker，然后其他订阅者通过消息订阅机制获得broker的主题消息推送。我们也可以作为订阅者，订阅其他发布者的主题消息。 对比MQ 消息队列存储消息，直到它们被消耗 消息队列中只有一个消费者处理消息，MQTT中订阅主题的每个订阅者都会收到消息 消息队列要提前并明确创建，MQTT中可以随时实时创建 议题 自动重连 Automatic Reconnect 离线缓存 Offline Buffering 消息持久化 Message Persistence 高可用 High Availability 安全 SSL/TLS websocket支持 连接 建立 broker开启一个host的TCP 1883端口 客户端连接Broker 如果是重连，需要带上上次ClientID 如果不是重连，可以指定CleanSession是否清空之前会话 可以指定两端之间心跳维持时间 服务端根据参数，重用或开启会话Session，绑定ClientID 一个会话，可以服务多个TCP连接，取决于是否CleanSession
订阅 websocket