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.
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Practical how-to tutorials for proxies and web scraping. Set up datacenter proxies on Windows or Mac, rotate them in Python, connect Selenium, and avoid blocks.
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The proxy basics worth knowing, from what a proxy server really is to IP reputation, blacklisting, anonymity levels, ports, and the HTTP, HTTPS and SOCKS5 protocols.
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Not sure which proxy to pick? We break down residential, datacenter, and mobile proxies, how each one works, and which suits web scraping or data collection best.
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View allpip 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.
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Proxy Not Working on Certain Websites? How to Fix It
Proxy not working on certain websites but fine everywhere else? Tell a block from a port, TLS/SNI or DNS fault with one command each, then apply the right fix.
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curl Proxy CONNECT Aborted? Exit Codes 5, 7, 35, 56 Fixed
curl proxy CONNECT aborted, (7) failed to connect, or a 407 after CONNECT? Map each curl exit code to the hop that failed, read the -v line, and fix it.
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Proxy Types
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Which Proxy Type Survives Long-Lived Logins
Picking a proxy for long term login work: how long each type can hold one address, what actually ends a session, and the cost per account-month of each.
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When to Move From Shared to Dedicated Proxies
Moving from shared to dedicated proxies: the five symptoms that mean you have outgrown a shared pool, the tests that confirm each, and the cost delta by workload size.
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When to Upgrade From Datacenter to ISP Proxies
The datacenter to ISP proxies upgrade decided by arithmetic: the break-even success rate, the throughput ceiling nobody warns about, and cheaper fixes first.
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ISP Proxies for Running Multiple Accounts: What to Buy
ISP proxies for account management: why static beats rotating for a login, what dedicated addresses cost per account in September 2026, and where they fail.
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IPv6 Proxies Are Cheaper, But Can You Actually Use Them
Are IPv6 proxies worth it? The buying decision turns on one DNS check, the prefix you actually rent, and a price ratio rule most sellers would rather you skip.
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ISP Proxy Pricing: What One Static IP Costs a Month
ISP proxy pricing broken down per IP: published rates read in September 2026, why 100 static IPs span 9x, and the fair usage clauses that change the bill.
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Use Cases
View allComparisons
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Latest articles
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路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.
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Crawlee Proxy Configuration: Rotation That Keeps Sessions
Crawlee proxy setup with proxyUrls, newUrlFunction and tieredProxyUrls: how SessionPool binds a proxy, and how to stop the session-retired loop on login crawls.
SparkProxy路Use Cases
Proxy Not Working on Certain Websites? How to Fix It
Proxy not working on certain websites but fine everywhere else? Tell a block from a port, TLS/SNI or DNS fault with one command each, then apply the right fix.
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Build Your Own Rank Tracker With Python and Proxies
Build your own rank tracker in Python: a keyword CSV, SERP fetches through rotating proxies or the Scraping API, Postgres history and a weekly movement report.
SparkProxy路Use Cases
curl Proxy CONNECT Aborted? Exit Codes 5, 7, 35, 56 Fixed
curl proxy CONNECT aborted, (7) failed to connect, or a 407 after CONNECT? Map each curl exit code to the hop that failed, read the -v line, and fix it.
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Git Config Proxy Setup for HTTPS and SSH Remotes
Git config proxy setup that works: http.proxy globally or per remote, URL-encoded credentials, no_proxy, unsetting it, and ProxyCommand for SSH remotes.
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Squid cache_peer Upstream Proxy With Authentication
Set up a Squid cache_peer upstream proxy with login=user:pass, never_direct and LAN ACLs so tools without proxy auth can use a paid proxy. Fix TCP_MISS/503.
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Sign In to Confirm You're Not a Bot: Fix yt-dlp on a VPS
yt-dlp says sign in to confirm you're not a bot on your server? Triage it cheapest-first, then fix it with PO tokens, cookies, the right proxy or the API.
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How to Monitor Competitor Website Changes Without the Noise
Monitor competitor website changes with section-level diffs, text normalization, screenshot evidence and a weekly digest, run daily through rotating proxies.
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The Proxy Server Is Refusing Connections in Firefox: Fix
Fix 'The proxy server is refusing connections' in Firefox: what really triggers it, a cheapest-first diagnosis order, the fix per cause, and an exit IP check.
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How to Set Proxy on Android With a Username and Password
How to set proxy on Android when Wi-Fi settings have no password field: whitelist your IP, run a local auth forwarder, or use adb's global proxy, then verify.
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