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Training WebSocket Initiation - Master Real-Time Web in 5 Days

Ref: CIJ624
10 people max.
$6,300 HT / per person
−15% from 2 people−30% from 3 people−50% from 5 people
Pay in 3 installments · +$180/day onsite · +$540 with certification exam
5 days
Remote

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Learning objectives

  • Understand the principles of WebSockets and their differences from HTTP
  • Install and configure a WebSocket development environment
  • Develop a WebSocket client in pure JavaScript
  • Implement a WebSocket server with Node.js and Socket.io
  • Manage events, messages, and reconnections
  • Integrate WebSocket into a complete web application
  • Debug and optimize real-time connections

The Learni story

Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.

Don't let this gap widen

Why this program matters

  • Without mastering WebSocket, your web apps remain static, losing 40% of impatient users facing slow refreshes, as indicated by a Google study on mobile engagement.

  • Your competitors deploy live chats, reactive dashboards, or push notifications, capturing 25% additional market share through fluid interactions.

  • Risk complaints about latency, 70% e-commerce cart abandonments, or failed security audits on insecure polling.

  • Invest 35 hours to turn these weaknesses into competitive advantages, avoiding estimated annual losses of 15k€ per unoptimized project.

Allan Busi
Allan Busi

Learni Trainer · Expert

73%productivity gap
×3cost of inaction

Program

Module 1WebSocket Fundamentals: Principles and Installation (Node.js tools, editors)

Dive into the basics of WebSockets, differentiate them from HTTP polling, install Node.js, npm, and VS Code, perform your first client-server handshake through interactive exercises, analyze network frames with DevTools, create a simple echo to validate your skills, and experience the magic of real-time from day one.

Module 2WebSocket Client: JavaScript Implementation (Native API, Events)

Master the native WebSocket API in JavaScript, code a client connected to a test server, manage open, message, close, and error events, integrate send/receive buttons into an HTML page, test with concrete cases like a live counter, export your functional client, and gain application fluidity.

Module 3WebSocket Server: Node.js and Socket.io (Connection Management)

Build a robust server with Node.js and Express, add Socket.io for simplicity, manage rooms and namespaces, implement broadcast and targeted messages through basic chat exercises, simulate 50 simultaneous connections, debug with advanced logs, deploy locally, and thrill with live multi-user interactions.

Module 4Advanced Management: Authentication, Reconnection (JWT, Heartbeats)

Secure your WebSockets with JWT for authentication, implement heartbeats to detect disconnections, code resilient automatic reconnection, handle errors and structured JSON payloads, apply to a live dashboard with updating charts, test under load with tools like Artillery, and refine your skills for reliable apps.

Module 5Final Project and Integration: Complete Real-Time Application

Synthesize everything in a capstone project like a collaborative chat or live notifier, integrate WebSocket with React or Vanilla JS, deploy on free Heroku, optimize performance and security, present your deliverable to the group, receive expert feedback, and leave with a concrete portfolio and confidence to boost your innovative web projects.

Evaluation method

  • Daily interactive quizzes, graded final project, skills self-assessment before/after.

Learning method

  • 70% hands-on approach, 30% theory, real-world exercises, concrete use cases.

Methods, materials and delivery

The Training WebSocket Initiation - Master Real-Time Web in 5 Days program is delivered onsite or remote (blended-learning, e-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training WebSocket Initiation - Master Real-Time Web in 5 Days program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training WebSocket Initiation - Master Real-Time Web in 5 Days program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are eligible for corporate training budgets and employer-funded plans.

Verified reviews

What our learners

4.9 · +100 verified reviews
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
★★★★★

« cool, j'ai appris des trucs »

TomFormation AWS — Cloud Practitioner
★★★★★

« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »

Eva CarpentierFormation LLM en Entreprise — Claude, ChatGPT, Mistral
★★★★★

« la formation dev etait intense mais grave bien. merci Anthony Khelil »

NolanDWWM - Développeur Web et Web Mobile
★★★★★

« 😊👍 »

AmbreDWWM - Développement Web & Mobile React
★★★★★

« bien 👍 »

Léo BlanchardFormation AWS — DevOps Engineer Professional
★★★★★

« Allan Busi t'es au top, continue comme ça. formation géniale »

MargotFormation Claude & ChatGPT — Comparatif et Cas d'Usage
Read all reviews
Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

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