Add mDNS support

project.clj

@@ -10,6 +10,7 @@
                  [org.clojure/data.json "0.2.4"]
                  [de.ubercode.clostache/clostache "1.3.1"]
                  [org.clojure/tools.logging "0.2.6"]
+                 [javax.jmdns/jmdns "3.4.1"]
                  [me.raynes/conch "0.5.0"]
                  [crate "0.2.5"]
                  [jayq "2.5.0"]]

src/dakait/handler.clj

@@ -3,6 +3,7 @@
         dakait.views
         dakait.files
         dakait.config
+        dakait.mdns
         [clojure.core.async :only(>! go)]
         [dakait.util :only (join-path)]
         [dakait.downloader :only (run start-download downloads-in-progress downloads-pending)]
@@ -130,6 +131,10 @@
   (load-tags (str (config :config-data-dir) "/tags.json"))
   (load-associations)
   (run)
+  (let [port (System/getenv "PORT")
+        port (when (nil? port) 3000)]
+    (println "Starting mDNS server on port:" port)
+    (publish-service port))
   (catch Exception e
     (println "Program initialization failed: " (.getMessage e))
     (System/exit 1)))

src/dakait/mdns.clj

@@ -0,0 +1,18 @@
+(ns dakait.mdns
+  (:import (javax.jmdns JmDNS
+                        ServiceInfo)))
+
+(def ^{:private true} service (atom nil))
+
+(defn publish-service
+  "Register a mDNS service with given information"
+  [port]
+  (let [service-info (ServiceInfo/create
+                       "_dakait._tcp.local."
+                       "Dakait"
+                       port 
+                       "SFTP File download and management utility")
+        mdns (JmDNS/create)]
+    (.registerService mdns service-info)
+    (reset! service mdns)))
+