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Wednesday, June 23, 2010

How to check a website from the commandline

Sometimes it's useful to check a website connectivity using only command line. I.e. when trying a website from remote host, or when you set up a new box you are going to put behind a loadbalancer.

If you need HTTP connection, telnet will be enough:

> telnet 10.10.10.10 80

GET /index.html HTTP/1.1
host: important.site.com

In the case of HTTPS you need openssl:

> openssl s_client  -connect 10.10.10.10:443 -prexit

GET /index.html HTTP/1.1
host: important.site.com

This is entry for my extend my 'external memory', but you might find it useful.
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