How do I change the default port (9000) that Play uses when I execute the "run" command?

Question

How can I change the default port used by the play framework in development mode when issueing the "run" command on the play console. This is for playframework 2.0 beta. Using the http.port configuration parameter either on the command line or in the application.conf seems to have no effect: ``` C:\dev\prototype\activiti-preso>play run --http.port=8080 [info] Loading project definition from C:\dev\prototype\activiti-preso\project [info] Set current project to activiti-preso (in build file:/C:/dev/prototype/activiti-preso/) Windows, really? Ok, disabling colors. --- (Running the application from SBT, auto-reloading is enabled) --- [error] org.jboss.netty.channel.ChannelException: Failed to bind to: 0.0.0.0/0.0.0.0:9000 [error] Use 'last' for the full log. ```

Accepted Answer

Play 2.x

In Play 2, these are implemented with an sbt plugin, so the following instructions are really just sbt tasks. You can use any sbt runner (e In Play 2, these are implemented with an sbt plugin, so the following are really just sbt tasks. You can use any sbt runner (e.g. `sbt`, `play`, or `activator`). Below the `sbt` runner is used, but you can substitute it for your sbt runner of choice.

Play 2.x - Dev Mode

For browser-reload mode:

```
sbt "run 8080"
```

For continuous-reload mode:

```
sbt "~run 8080"
```

Play 2.x - Debug Mode

To run in debug mode with the http listener on port `8080`, run:

```
sbt -jvm-debug 9999 "run 8080"
```

Play 2.x - Prod Mode

Start in Prod mode:

```
sbt "start -Dhttp.port=8080"
```

Play 2.x - Staged Distribution

Create a staged distribution:

```
sbt stage
```

For Play 2.0.x and 2.1.x use the `target/start` script (Unix Only):

```
target/start -Dhttp.port=8080
```

For Play 2.2.x & 2.3.x use the appropriate start script in the `target/universal/stage/bin` directory:

```
target/universal/stage/bin/[appname] -Dhttp.port=8080
```

With Play 2.2.x & 2.3.x on Windows:

```
target\universal\stage\bin\[appname].bat -Dhttp.port=8080
```

Play 2.x - Zip Distribution

To create a zip distribution:

```
sbt dist
```

For Play 2.0.x and 2.1.x use the `start` script (Unix Only) in the extracted zip:

```
start -Dhttp.port=8080
```

For Play 2.2.x use the appropriate script in the `[appname]-[version]/bin` directory:

```
[appname]-[version]/bin/[appname] -Dhttp.port=8080
```

With Play 2.2.x on Windows:

```
[appname]-[version]\bin\[appname].bat -Dhttp.port=8080
```

Play 1.x

Change the `http.port` value in the `conf/application.conf` file or pass it command line:

```
play run --http.port=8080
```

How do I change the default port (9000) that Play uses when I execute the "run" command?

Solution

Problem