How to change the http port for play framework 2.4.1?

Question

I come from a play 1.2.7 application and currently getting started with play framework 2.4.1 and scala. For a start I use the activator web ui to manage applications and there I cannot get the application to use a different http port.

I changed the http.port setting in conf/application.conf, but still play 2.4.1 tries to bind to port 9000, which is already in use. The setting I tried is:

http.port=7000

Any suggestion on how to change the port for a play framework 2.4.1 application that is run via the activator web ui?

Note that as suggested in the linked question I can use

./activator "run 7000"

in the application itself to have it bind to port 7000. Still my question is how can I get the same behaviour via the activator web ui?

Juta

possible duplicate of How do I change the default port (9000) that Play uses when I execute the "run" command? – Isthmian

playframework.com/documentation/2.4.x/ProductionConfiguration – Marolda

I followed the documentation and added http.port to application.conf, it just doesn't seem to be used. I don't use the play run method right now, but activator's web ui. – Juta

Answer 1

Add the following to build.sbt of your project where <port> should be replaced with your desired port number.

build.sbt

fork in run := true
javaOptions in run += "-Dhttp.port=<port>"

Expected console output in Activator UI on run

Setting up Play fork run ... (use Ctrl+D to cancel)

--- (Running the application, auto-reloading is enabled) ---

p.a.l.c.ActorSystemProvider - Starting application default Akka system: application
p.c.s.NettyServer - Listening for HTTP on /0:0:0:0:0:0:0:0:<port>

(Server started, use Ctrl+D to stop and go back to the console...)

Damondamour

I've tried to do this and it doesn't work. I tried starting it with activator and with sbt, and neither picked up the option – Tenstrike

This solution is solely for starting applications via Activator Web UI (activator ui). If you want to change the port when using sbt or activator command line just add -Dhttp.port=<port> to your command (e.g. activator run -Dhttp.port=8080) – Damondamour

Answer 2

Through the application.conf in production:

play.server.http.port = 80

When you run the application with SBT:

PlayKeys.devSettings := Seq("play.server.http.port" -> "80")

Using run command:

$ run 80

For more details please refer the below links:

documentation-Config File

documentation-Server configuration options

Vegetation

It's never too late to give some effort to answer a question! – Calix

Answer 3

Just a short note concerning the run command (tested with Play! 2.4):

At least on Windows activator run -Dhttp.port=80 does NOT work, but activator (hit enter) and then run -Dhttp.port=80 works

Cartogram

You'll have to use quotes when passing parameters to activator (or sbt): activator "run -Dhttp.port=80", otherwise each parameter is assumed to be a task and run separately. When running the activator (or sbt) console, you can omit the quotes. – Naga

Answer 4

Try this out:

activator "run 9500"

in terminal from your project folder.

Aleppo

Answer 5

This command work for me guys:

activator "~run 3333"

Inchoation