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#http3 (21)

Concepts (1)

APIs

A versioned contract between two pieces of software — endpoints, verbs, payload shapes, errors, and auth — that decouples a caller from an implementation.
http contract protocol web rest graphql rpc http3 llm attestation web-researched

Cheat sheets (20)

axios — Promise-Based HTTP Client for Node and the Browser

Package-level reference for axios — interceptors, request configuration, error handling, and the migration story from 0.x to 1.x.
npm package http client fetch

body-parser — HTTP Request Body Parsing for Node

Package-level reference for body-parser on npm — JSON, urlencoded, raw and text middleware, webhook signatures, and Express 4.16+ bundling.
npm package body-parser express http middleware

cors — CORS Middleware for Node

Package-level reference for cors on npm — preflight handling, credentialed requests, dynamic origins, and Express integration.
npm package cors express http middleware security

express — Minimalist Node.js Web Framework

Package-level reference for Express on npm — install, middleware model, Node support, 4-to-5 migration, and production deployment.
npm package express web framework http server

helmet — Express/Connect security-header middleware

Package-level reference for helmet on npm — default headers, CSP customization, per-route overrides, HSTS, and v7→v8 migration.
npm package security http javascript

http-server — Lightweight zero-config static HTTP server

Package-level reference for http-server on npm — install, HTTPS, gzip, proxy mode, basic auth, and the serve comparison.
npm package dev-tool http static

node-fetch — fetch() polyfill (mostly superseded)

Package-level reference for node-fetch on npm — v2 (CJS) vs v3 (ESM), why Node 18+ built-in fetch obviates it, and migration paths.
npm package http fetch javascript

serve — Static file server for development and one-off hosting

Package-level reference for serve on npm — install, SPA fallback, auth, CORS, and when to reach for caddy or python -m http.server instead.
npm package dev-tool http static

certifi — Mozilla CA Certificate Bundle

Package-level reference for certifi on PyPI — what the bundle contains, install, integration with requests / urllib3 / ssl, alternatives.
pip package tls security http

charset-normalizer — Character Encoding Detection

Package-level reference for charset-normalizer on PyPI — what it does, install, integration with requests, version policy, and alternatives.
pip package encoding text http

httpx — Async-Capable HTTP Client

Package-level reference for httpx on PyPI — install variants, version policy, extras, transport options, and alternatives.
pip package http async networking

requests — The Most-Downloaded Python Package

Package-level reference for the requests HTTP client on PyPI — install variants, version policy, extras, and alternatives.
pip package http networking

urllib3 — Low-Level HTTP Client

Package-level reference for urllib3 on PyPI — connection pooling, retries, TLS, version policy, and alternatives.
pip package http networking tls

aria2c Download Utility

Fast, multi-protocol download utility supporting HTTP(S), FTP, SFTP, BitTorrent, and Metalink with resumption and parallel connections.
aria2c download http ftp torrent networking cli web-researched

curl — HTTP Client

Transfer data with URLs. Covers HTTP methods, headers, authentication, forms, TLS, cookies, proxies, timeouts, parallel downloads, and a comprehensive recipe collection.
curl http api networking cli rest download web-researched

wget — File Downloader

Non-interactive network downloader. Covers single and batch downloads, recursive mirroring, authentication, resuming, rate limiting, and site archiving.
wget http download networking cli mirror wgetrc wget2 scraping cookies web-researched

httpx — Modern HTTP Client

Make sync and async HTTP requests with httpx. Covers GET/POST, async usage, HTTP/2, streaming, and how it compares to requests.
python httpx http api async networking

requests — HTTP for Humans

Make HTTP requests in Python with the requests library. Covers GET/POST, JSON, sessions, authentication, retries, and common pitfalls.
python requests http api networking

Fetch API

The browser and Node 18+ built-in HTTP client that returns Promises. Covers GET/POST/PUT/DELETE, headers, error handling, streaming, AbortController, uploads, credentials, and CORS.
javascript fetch http api language

Python CLI Snippets

Short standalone Python scripts for common tasks — file I/O, JSON manipulation, HTTP requests, CSV processing, and data transformation.
python snippets cli scripts json csv http file-io