Check whether a proxy is valid, or blocked by a server.
Pass in proxy servers to check on stdin, one per-line.
Run proxy-checker help for more details on usage.
Flags as of this writing:
proxy-checker makes a bunch of calls to an API and reports which succeed and which fail.
-concurrency int
Max number of proxies to try simultaneously. Certain proxies may rate-limit a source IP to prevent DDoS. (default 2)
-forbidden int
HTTP status code returned for blocked proxies (default 403)
-ip-parser string
Name of the parser to use ('body' is only choice right now) (default "body")
-max int
Total number of proxies to check. Limit is here for your sanity so you don't get classified as a DDoS by testing too many proxies. (default 20)
-method string
Method to call on URL (default "GET")
-ok int
HTTP status code for successful proxies (default 200)
-proxy-pass string
Password for the proxy service being tested
-proxy-user string
Username for the proxy service being tested
-realtime
Print results as they come in, rather than sorted at the end
-sleep int
Milliseconds to sleep between proxy checks. Certain proxies may rate-limit a source IP to prevent DDoS. (default 1000)
-timeout int
Milliseconds to wait before timing out a proxy check. (default 1000)
-trace
Enable http tracing to help debug what is going on
-url string
URL to check (default "https://google.com")
You can import the proxychecker library for access to its internals.
You can run proxychecker/proxycheckercmd.Main() to run the top-level
command line program from your own app.
We can grab a free proxy IPs from https://free-proxy-list.net/, and see if it's blocked by the site in question:
printf "217.23.69.146:8080\n54.189.50.117:3121\n" | go run main.go -url='https://robg3d.com'If you are debugging some weird behavior in proxies,
you should use the -realtime and -trace flags.
For example, here is a command to check all UK VPNs offered by NordVPN, and what is blocked by Google:
test -f "temp/ovpn.zip" || wget -O temp/ovpn.zip 'https://downloads.nordcdn.com/configs/archives/servers/ovpn.zip'
unzip -Z1 temp/ovpn.zip \ # Print just the filenames, one per-line
| grep "ovpn_tcp" \ # Only get tcp lines; ignore udp
| sed "s/ovpn_[a-z][a-z]p\///" \ # Strip leading "ovpn_tcp/"
| sed "s/.[a-z][a-z]p.ovpn//" \ # Strip trailing .tcp.ovpn
| grep "uk" \ # Limit to just "uk" servers
| sed -n '1,20p;21q' \ # Grab the first 20 only
| go run proxy-checker/main.go \ # Run the command
-url="https://google.com" \
-forbidden=403 \
-ok=200 \
-concurrency=1 \
-sleep=1000 \
-proxy-user="${PROXY_USER}" \
-proxy-pass="${PROXY_PASS}"You can throw that in a Makefile or bash file and run it with something like
PROXY_USER=username PROXY_PASS=password make check-nord-vpns