CAPTCHA Keeps Coming Back After Solving: How to Fix It
CAPTCHA keeps coming back after solving? The clearance is tied to the IP, User-Agent and TLS that solved it. Solve on a sticky session and reuse the cookies.
SparkProxy·Guides
All Articles
All Articles
Every guide, tutorial and insight from the SparkProxy blog — datacenter proxies, web scraping, IP intelligence and use cases, newest first.
All Articles articles
Site Fails on Mobile Data Only? Reproduce It With Proxies
Website not loading on mobile data but works on wifi? Reproduce the failure on the carrier's network path, then isolate DNS, WAF, IPv6, MTU and CDN causes.
SparkProxy·Use Cases
Axios Proxy Not Working for HTTPS: Causes and Fixes
Axios proxy not working for HTTPS? Fix EPROTO, the 400 plain HTTP request sent to HTTPS port error and hangs with proxy:false and https-proxy-agent. Tested.
SparkProxy·Guides
http_proxy Not Working With sudo, cron and systemd
http_proxy not working with sudo, cron or systemd? Dump the job's real environment, fix env_keep, crontab lines and Environment=, then prove the exit IP.
SparkProxy·Guides
BlueStacks Proxy and LDPlayer Proxy Setup That Sticks
BlueStacks proxy and LDPlayer proxy setup that keeps authentication: Proxifier on the host, adb http_proxy with an IP whitelist, or an in-emulator proxy app.
SparkProxy·Use Cases
Website Returning Fake Data to Scraper? Catch Soft Blocks
Website returning fake data to scraper? Catch poisoned prices, fake out-of-stock and truncated results with self-consistency checks and cross-IP votes.
SparkProxy·Guides
New Listing Alert Scraper: Rental Alerts in Minutes
Build a new listing alert scraper: poll saved rental searches every few minutes, detect new listing IDs, filter by price and beds, and push alerts to a phone.
SparkProxy·Use Cases
Scrapy: Could Not Open CONNECT Tunnel With Proxy (Fixed)
Scrapy could not open CONNECT tunnel with proxy? Read the status inside the TunnelError, then fix 407s, dropped Proxy-Authorization, timeouts and concurrency.
SparkProxy·Guides
Proxychains Configuration: Force Any Linux Tool via Proxy
Proxychains configuration for proxychains-ng 4.17: strict vs dynamic chain, proxy_dns, auth lines, Go and static binary workarounds, and a DNS leak test.
SparkProxy·Guides
FoxyProxy Setup With Username and Password
FoxyProxy setup for per-site routing: saved username and password, patterns that match, why Chrome rejects SOCKS5 auth, and how to stop the login popup.
SparkProxy·Use Cases
Proxy Showing Wrong Country? Align Every Geo Signal
Proxy showing wrong country content even though the IP checks out? Test cookies, Accept-Language, timezone, CDN edge and geo-IP lag in order, then fix each one.
SparkProxy·Guides
Test Your GDPR Cookie Banner From the EU
Test cookie consent banner EU behaviour from outside Europe: load your site via EU exits with Playwright and catch cookies and pixels that fire before consent.
SparkProxy·Use Cases
aiohttp ClientProxyConnectionError: Fix Every Proxy Error
Fix aiohttp ClientProxyConnectionError, ClientHttpProxyError 407 and ServerDisconnectedError with proxies: verbatim errors, a diagnosis order and tested fixes.
SparkProxy·Guides
Java Proxy Settings: Fix JVM 407 and Ignored Proxies
Java proxy settings that work: which JVM properties HttpClient reads, why Basic auth gets 407 on HTTPS, and the startup flag that fixes it, with a check each.
SparkProxy·Guides
ScrapeBox Proxies: Load, Test, and Harvest Google
Set up ScrapeBox proxies that keep harvesting: the IP:PORT:USER:PASS format, loading a rotating gateway, what the Google test checks, and safe connections.
SparkProxy·Use Cases
Sticky Session IP Changing Mid-Flow? Causes and Fixes
Sticky session IP changing mid-login or checkout? Check leaks, session ID format, the 5-minute window, parallel connections and exit churn in order.
SparkProxy·Guides
Competitors Bidding on My Brand Name? Track Them
Competitors bidding on my brand name? Schedule brand SERP captures per country, parse advertiser domains, save screenshot evidence and alert on new bidders.
SparkProxy·Use Cases
httpx proxies Argument Removed? Fix ProxyError and 407
The httpx proxies argument is gone in 0.28. Fix the TypeError, then ProxyError 407, SOCKS ImportError and RemoteProtocolError, with verbatim errors and code.
SparkProxy·Guides
npm config set proxy: Install Packages Behind a Proxy
npm config set proxy and https-proxy, the right .npmrc file, yarn and pnpm equivalents, noproxy for private registries, and keeping passwords out of your repo.
SparkProxy·Guides
Octoparse Proxy Setup: Custom Lists and Switch Interval
Octoparse proxy setup for local runs: the IP:port list format, whitelist auth, how the switch interval meets gateway rotation, and why pagination breaks.
SparkProxy·Use Cases
Rotating Proxy Not Rotating? Fix Same-IP Responses
Rotating proxy same IP every request? Your client reuses one CONNECT tunnel or a sticky setting survived. Fix it in requests, httpx, Node, Playwright.
SparkProxy·Guides
How to See Google Ads in Other Countries Without Clicking
How to see Google ads in other countries: Ads Preview first, then a clean browser behind a country proxy, no clicks, and a daily script that logs ad copy.
SparkProxy·Use Cases
SSL WRONG_VERSION_NUMBER With a Proxy: The Fix
Getting SSL WRONG_VERSION_NUMBER through a proxy in Python? It's almost always https:// in the proxy URL. The one-character fix, plus every SSLEOFError cause.
SparkProxy·Guides
pip install Proxy Setup: --proxy, pip.conf and Env Vars
pip install proxy setup that works: the --proxy flag, pip.conf, PIP_PROXY vs HTTPS_PROXY precedence, encoded passwords, and the SSL error a wrong scheme causes.
SparkProxy·Guides