P2P For Web Devs, Part 1: Networking

📰 Dev.to · erndob

Learn the basics of P2P networking for web development, including Hyperswarm and its role in connecting peers, and start building your own P2P network using Node.js and JavaScript

intermediate Published 12 Mar 2026
Action Steps
  1. Install Node.js and a code editor to start building P2P applications
  2. Explore the Hyperswarm library and its API for finding and connecting to peers
  3. Create a new Node.js project and require the Hyperswarm library to start building a P2P network
  4. Use the Hyperswarm API to connect to a topic and start communicating with other peers
  5. Experiment with different topics and peer connections to understand the basics of P2P networking
Who Needs to Know This

Web developers and software engineers can benefit from understanding P2P networking concepts to build decentralized and scalable applications

Key Insight

💡 Hyperswarm provides a high-level API for finding and connecting to peers in a P2P network, making it easier to build decentralized applications

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Learn P2P networking for web development with Hyperswarm and Node.js #p2p #node #javascript

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Title: P2P For Web Devs, Part 1: Networking

URL Source: https://dev.to/erndob/p2p-for-web-devs-part-1-networking-1961

Published Time: 2026-03-12T03:23:14Z

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Posted on Mar 12 • Edited on Mar 20

# P2P For Web Devs, Part 1: Networking

[#p2p](https://dev.to/t/p2p)[#node](https://dev.to/t/node)[#distributedsystems](https://dev.to/t/distributedsystems)[#javascript](https://dev.to/t/javascript)

> Previous article in this series: [P2P For Web Devs, Prologue: Why should I care?](https://dev.to/erndob/p2p-for-web-devs-prologue-why-should-i-care-2gfm)

## [](https://dev.to/erndob/p2p-for-web-devs-part-1-networking-1961#hyperswarm)[Hyperswarm](https://github.com/holepunchto/hyperswarm)

When you start with Pear runtime, one of the first things you encounter is Hyperswarm. It describes itself as:

> A high-level API for finding and connecting to peers who are interested in a "topic."

Let's dissect this seemingly simple description.

**Peers** are processes that communicate through a network, with a key distinction being that they do both - make requests and receive requests. You will often see a term "node" too, these are used _almost_ interchangeably in P2P context, as all peers are nodes.

**Swarm** in Hyperswarm is a group of peers that are all connected to each other. E.g. a group cal
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