js-libp2p-http

Introduction

js-libp2p-http is a lightweight HTTP-like transport built on top of libp2p. It allows you to send HTTP-like requests over libp2p, with easy handler registration and response handling.

Installation

To install js-libp2p-http, choose your preferred package manager:

• Using npm:

  npm install js-libp2p-http

• Using yarn:

  yarn add js-libp2p-http

• Using pnpm:

  pnpm add js-libp2p-http

Usage

Import the Library

import Libp2pHttp from 'js-libp2p-http';

Creating a Libp2p Node

First, you'll need to create and initialize a libp2p node:

import { createLibp2p } from 'libp2p'; 

const node = await createLibp2p({...options});

Initialize with js-libp2p-http

Once you have a libp2p node, you can initialize js-libp2p-http:

const libp2pHttp = Libp2pHttp.init(node);

Creating Handlers

Handlers respond to specific protocols. Define them and bind to specific routes:

libp2pHttp.registerHandler("/your-protocol-endpoint", async (data) => {
    // Process the incoming request data...
    return { data: "Response Data" };
});

Handling Requests

Before sending a request to a handler, ensure that the requesting node dials the handler node:

await node.dial(multiaddr("HANDLER_NODE_MULTIADDR"));

Send a request using the send method:

const response = await libp2pHttpRequester.get(`libp2p://HANDLER_NODE_PEER_ID/your-protocol-endpoint`, { data: "Request data" });

Examples

For a clearer explanation and practical demonstrations of various use cases, please check out the examples folder in the package/repository. It provides comprehensive examples to help you understand how to effectively use js-libp2p-http.

Error Handling

Always handle errors gracefully:

try {
    const response = await libp2pHttpRequester.get(`libp2p://HANDLER_PEER_ID/your-protocol-endpoint`, "Your request data here");
    // Handle the response
} catch (error) {
    console.error("Failed to send request:", error);
}

Tips

1. Always catch errors from requests to handle them gracefully.
2. Ensure your handlers return data in the format expected by requesters.
3. Remember to dial a node before sending a request to it.
4. Ensure both handler and requester nodes are running and reachable.

Feedback and Contributions

We value feedback from the community! If you encounter any issues or have suggestions, please create an issue on GitHub.

License

js-libp2p-http is released under the MIT License.