Really easy way to use HTTPS on localhost

rhymes on January 08, 2019

Testing if your site works well on your local machine is always burdensome. I found a tool that makes it really simple, mkcert: ➜ localhost-... [Read Full]
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OK, but, what version of cat is that? Never seen anything like it. And how do you turn the extra stuff off?


Hi John,

it's bat aliased to cat :-)

And how do you turn the extra stuff off?

what do you mean?


I just meant if you wanted the standard behaviour of cat, because if you did cat file.txt > otherfile.txt that formatting would cause you to have a bad time, OK?

Ah ok!

No, it doesn't happen:

➜  ~ unalias cat
➜  ~ cat > filea.txt
this is a file written with standard cat
➜  ~ bat filea.txt
       │ File: filea.txt
   1   │ this is a file written with standard cat
➜  ~ bat filea.txt > fileb.txt
➜  ~ cat fileb.txt
this is a file written with standard cat

I'm curious to how it knows to change the output depending where the output is directed to. Like aren't both stdout from the point of view of bat?

You can detect if the output is being redirected with POSIX functions isatty(3) and fstat(2)


Hope it works well with Rails. I have had so much trouble trying to a local HTTPS server running with Rails :( I almost always end up using ngrok.


Works fine with rails. After creating / installing your certificate as described in the article, start your rails server via rails s -b 'ssl://localhost:3000?key=./localhost-key.pem&cert=./localhost.pem'


Hey, that's really useful, thanks for sharing!


Why? You can create a test domain or subdomain and use letsencrypt.


You can also use ngrok, mkcert seems easier than all the options I can think of, ngrok included


Yes, but letsencrypt will work even if someone else is accessing your dev server and the effort isn't any bigger, so why bother creating local certificates if you can create a valid one?

Can you write an article about it? It would be useful for everyone. Thank you!


I'm thinking about setting all those stuff on Docker (or any image contain) and play with it. Do you think it's possible?


I'm not that familiar with Docker so I don't know. The tool is a standard Go binary and I guess if you open the port of the web app serving you might accomplish something.

You need to root in your container to install it though, just downgrade your permissions after that.


Do you know if this works with a XAMPP or LAMPP localhost server? I would like to use this for my wordpress projecs.


I believe so, it's independent from the technology of the server. It just needs to support TLS.

I'm not familiar with either XAMPP or LAMPP but judging from a search engine query you need a tutorial on how to use a certificate with Apache. This seems a valid one (from Step 2):


Thanks, in the past I tried some tutorials and other techniques but I found difficult to install them in the browser "trust stores", this one seems easy, I will give it a try!

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