axios-http2-adapter

An HTTP/2-capable adapter for Axios, providing automatic fallback to HTTP/1.1 when HTTP/2 is unsupported or unavailable.

✨ Features

• Uses the HTTP/2 protocol for supported HTTPS endpoints
• Automatically falls back to HTTP/1.1 (over HTTPS or HTTP) when needed
• Seamlessly integrates with existing axios instances
• Compatible with both browser-like and Node.js environments

📦 Installation

npm install axios-h2-adapter

🚀 Usage

import axios from "axios";
import adapter from "axios-h2-adapter";

const axiosInstance = axios.create({
  adapter,
});

const res = await axiosInstance.get("https://example.com");
console.log(res.status); // 200

You can also pass adapter inline:

const res = await axios.get("https://example.com", {
  adapter,
});

🔍 Fallback Behavior

If the server supports HTTP/2, requests will use it automatically.

If HTTP/2 is not supported, it will gracefully fall back to HTTP/1.1.

Works for both HTTPS and HTTP requests (though HTTP/2 only applies to HTTPS).

✅ Tests

To run tests:

npm install
npm test