Guides
Each guide covers one tool or one job from first launch to a finished run, with the errors that show up along the way and what each one points at.
Browsers and desktop
Proxifier SOCKS5 Setup
Sending Any Windows Application Through a Proxy
guideSwitchyOmega proxy setup
profiles, switch rules and the parts that break quietly
guidePlaywright proxy setup
every level where an address gets attached
guidePuppeteer proxy authentication
from the launch flag to a run that finishes
guideAdsPower proxy setup
profile fields, bulk import and the checks before first login
guideSelenium proxy authentication
getting the password past ChromeDriver, geckodriver and Grid
Code and libraries
Scrapy proxy middleware
per request address selection, failure handling and the counters that prove it
guidecurl through a proxy
the flags that decide what comes back
guidePython requests proxy session retry
pools, backoff and timeouts that hold for a long run
guideNode.js HTTP request through a proxy
axios, got and undici, three clients and three mechanics
guideGolang HTTP proxy transport
from one Transport to a collector that runs all night
guidePHP cURL proxy
the options, the SOCKS5 letter and the Guzzle client that reuses them
Diagnostics
How to tell what blocked my request
reading the answer in the response headers
guidemitmproxy inspect requests
reading what your client puts on the wire
guideProxy checker script
what to measure before you trust a pool list
guideGitHub Actions proxy setup
environment variables, secrets and runners that stay reachable
Collection jobs
Scrape product pages at scale
from a catalogue map to a delivered table
guideScrape job boards
depth ceilings, repost duplicates and a snapshot that holds every morning
guideScrape business directories
from the rubric tree to one folded table
guidePrice monitoring pipeline
from card matching to an alert worth acting on
Every guide here was run against server addresses from a private pool, since a shared address makes the failures impossible to attribute: SOCKS5 access with the list handed over on purchase.