HTTP
Everything tagged HTTP.
8 articles
Topic HTTP
Tutorial
Python HTTP clients compared: requests, httpx, aiohttp and urllib3
Six Python HTTP clients tested on one server: what each one sends, which follow redirects, which give up on a silent server, how fast they are, and what they install.
October 12, 2026 · 10 min read
Tutorial
Python requests headers: set, read and rotate them
What Python requests really sends as headers, tested on our own server: the five defaults, Sessions, tokens on redirects, rotation, br, and what a proxy sees.
October 12, 2026 · 5 min read
Tutorial
Python requests POST: form data, JSON and files
How to send form data, JSON and files with requests.post, tested against our own server: four calls that send something else, redirects, sessions and proxies.
October 12, 2026 · 5 min read
Tutorial
Python requests retry: retries, backoff and when to switch proxy
How to retry failed requests in Python, timed at our own server: no retries by default, the real backoff waits, Retry-After, POST, timeouts and proxy switching.
October 12, 2026 · 5 min read
Explainer
HTTP cookies explained: how they work and why they matter when scraping
What an HTTP cookie is, what each Set-Cookie attribute does, which cookies 100 top sites set on a first visit, and why one cookie links requests across proxies.
October 11, 2026 · 7 min read
Explainer
Reverse proxy vs load balancer: what each does and when you need both
A reverse proxy stands in for a site; a load balancer spreads requests over servers. Most web load balancers are reverse proxies. With a working demo and the headers of 100 top sites.
October 11, 2026 · 6 min read
Explainer
WebSocket vs HTTP: the difference and what changes behind a proxy
How a WebSocket starts as HTTP and becomes a two-way channel, what one message costs on each, and why wss:// passed 8 of 12 free proxies while ws:// passed 3.
October 11, 2026 · 6 min read
Guide
415 Unsupported Media Type error: causes and fixes
A 415 means the server will not accept the body in the format you sent it. See which Content-Type your client really sends, and the one-line fix for requests, curl and fetch.
October 10, 2026 · 6 min read
Proxies that don't die mid-job
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HProxy.
Honest guides and comparisons on proxies, scraping and staying unblocked, from the team that runs the network.