Scala spray failing to bind to EC2 Public DNS

Question

I just stopped running a Scala Spray executable on an EC2 Ubuntu instance to launch a newer version of the app. When I try and run the new executable I get the following error:

ubuntu@ip-172-32-92:~/suredbits-dfs$ ./target/universal/stage/bin/suredbits-dfs [WARN] [08/14/2015 03:22:30.314] [NflDbApiActorSystemConfig-akka.actor.default-dispatcher-5] [akka://NflDbApiActorSystemConfig/user/IO-HTTP/listener-0] Bind to ec2-52-116-195.us-west-2.compute.amazonaws.com/172.32.92:80 failed

I have checked to make sure port 80 is open and available by running this command:

netstat -anp | grep 80

which doesn't return anything. It seems that my port is open, and Scala Spray is just failing to bind again. Here is how I am attempting to start my server in my executable:

package com.suredbits.dfs

/**
 * Created by chris on 8/9/15.
 */

import akka.actor.ActorSystem
import com.github.nfldb.config.{NflDbApiActorSystemConfig, NflDbApiDbConfig}
import com.suredbits.dfs.nfl.scoring.NflPlayerScoringService
import spray.routing.SimpleRoutingApp

object Main extends App with SimpleRoutingApp with NflPlayerScoringService
  with NflDbApiDbConfig with NflDbApiActorSystemConfig {

  import actorSystem._

/*  startServer(interface = "localhost", port = 80) {
    path("hello") {
      get {
        complete {
          <h1>Say hello to spray</h1>
        }
      }
    } ~ nflPlayerScoringServiceRoutes
  }*/

  startServer(interface = "ec2-52-116-195.us-west-2.compute.amazonaws.com", port = 80) {
    path("hello") {
      get {
        complete {
          <h1>Say hello to spray</h1>
        }
      }
    } ~ nflPlayerScoringServiceRoutes
  }
}

Try enabling DEBUG logging which should report the underlying error. — jrudolph, Aug 14 '15 at 07:36
@tedder42 this was the issue, if you want to write up a post I will award the question to you. — Chris Stewart, Aug 14 '15 at 14:21
@ChrisStewart done- I didn't want to do a full answer until I knew if it helped. — tedder42, Aug 14 '15 at 15:37

score 1 · Accepted Answer · answered Aug 14 '15 at 15:36

Start the process with sudo:

sudo ./target/universal/stage/bin/suredbits-dfs

Why? You are trying to use a privileged port (a port under 1024). Only root has access to those ports. The clue that tipped me off to this was that you checked netstat and nothing else was on port 80.

Scala spray failing to bind to EC2 Public DNS

1 Answers1