nobody
Hi!
In PHP: $_SERVER[‘SERVER_ADDR’] - in Elixir?
Searched the docs for ip address and the web, no good results.
Thanks!
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StefanHoutzager
Maybe you can use System.cmd (and ifconfig in linux)?
http://elixir-lang.org/docs/stable/elixir/System.html
nobody
hmm, there must be a native method for that?
sysashi
Elixir does not have builtin web server. If you are using Phoenix, you can try
MyApp.Endpoint.urlfunction. Otherwise check documentation of a webserver.nobody
sysashi, thank you for that information, however I was asking for how to get the current ip address of the server and do not see how your answer is connected to that?
btw what is running when I do mix phoenix.server or run a release?
StefanHoutzager
If it’s not there and you find it should you could try to write it yourself (good exercise!
and add it to the language. It’s opensource.
Linuus
Try to call the erlang function
:inet.getif()NobbZ
If you want to have your app to know about a specific IP, then hardcode it or set it as a config.
It may be possible that you end up in an environment that has multiple interfaces and as such multiple IPs, even worse if your apps server listens on at least two of them. Which IP do you want to know in this setting?
dom
Something like this should do the trick
I think
getifis not documented, so technically it could disappear eventually.getifaddrsmay be a more future-proof option. Note in practice this will return multiple IPs since you’ll have at least a loopback and an external IP.You’ll find more options if you google something like “erlang get ip”, whatever works in Erlang will also work in Elixir.
sysashi
so
PHP: $SERVER['SERVERADDR']in OP’s example will return an IP address of a underlying WEB server,:inet.getif()will return interfaces on a machine where hypothetically you run you WEB server. Not sure if we all talking about the same stuffnobody
My question is of course related to the exact situation you describe and I would like to see to which IP address phoenix binds automatically and why this happens.
Of course the goal is to have some control over this and I would like to tell phoenix to bind to a specific ip address, do you know how to do that, seems like this is not explicitely documented anywhere. Please see my other question about that from today, thanks!