Merge pull request #237 from github/keep-alive-ping

Keep alive ping

src/robot.coffee

@@ -1,11 +1,12 @@
-Fs      = require 'fs'
-Url     = require 'url'
-Log     = require 'log'
-Path    = require 'path'
-Connect = require 'connect'
+Fs         = require 'fs'
+Url        = require 'url'
+Log        = require 'log'
+Path       = require 'path'
+Connect    = require 'connect'
+HttpClient = require 'scoped-http-client'
 
-User    = require './user'
-Brain   = require './brain'
+User       = require './user'
+Brain      = require './brain'
 
 HUBOT_DEFAULT_ADAPTERS = [ "campfire", "shell" ]
 
@@ -192,6 +193,12 @@ class Robot
 
     @connect.listen process.env.PORT || 8080
 
+    setInterval =>
+      HttpClient.create("http://localhost:#{process.env.PORT || 8080}/hubot/ping")
+        .post() (err, res, bod) =>
+          @logger.info "Keep alive ping!"
+    , 1200000
+
   # Load the adapter Hubot is going to use.
   #
   # path    - A String of the path to adapter if local.
@@ -485,9 +492,6 @@ class Robot.Response
   http: (url) ->
     @httpClient.create(url)
 
-HttpClient = require 'scoped-http-client'
-
 Robot.Response::httpClient = HttpClient
 
 module.exports = Robot
-

src/scripts/httpd.coffee

@@ -2,12 +2,16 @@
 spawn = require('child_process').spawn
 
 module.exports = (robot) ->
+
   robot.router.get "/hubot/version", (req, res) ->
     res.end robot.version
+
   robot.router.post "/hubot/ping", (req, res) ->
     res.end "PONG"
+
   robot.router.get "/hubot/time", (req, res) ->
     res.end "Server time is: #{new Date()}"
+
   robot.router.get "/hubot/info", (req, res) ->
     child = spawn('/bin/sh', ['-c', "echo I\\'m $LOGNAME@$(hostname):$(pwd) \\($(git rev-parse HEAD)\\)"])