regular expression checking valid hostname port [closed]

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I've searched thru various websites and here for one that works but none do.

I need a regex that validates a game server hostname is correct format.

Example:

gost.gflclan.com:27015

And also the normal ip:port

103.18.138.27:27015

The hostname version can also have numbers in the subdomain or main part. And always has 5 numbers in port on both.

I've currently got this but it only works for the ip:port and not the hostname one.

([0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}:[0-9]{5})|([a-z].[a-z].[a-z]:[1-9]{5})

Thanks if you can help.

回答1:

updated :

try:

[^\:]+:[0-9]{5}

dynamically match both:

103.18.138.27:27015
gost.gflclan.com:27015

little explaination:

 [^\:]+ --- |> all chars till ':' 
   :
 [0-9]{5} --|> exactly 5 numbers

回答2:

There is a bit more cleaner code:

(([0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3})|(\w*.\w*.\w*)):[0-9]{5}

回答3:

Live demo

You forgot the + after [a-z] and the dot must be escaped:

([0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\:[0-9]{5})|([a-z]+\.[a-z]+\.[a-z]+\:[0-9]{5})

来源：https://stackoverflow.com/questions/25966391/regular-expression-checking-valid-hostname-port