UPnP SSDP Internet Gateway Device discovery example

examples/upnp-ssdp-igd-discovery.js

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+'use strict';
+
+//
+// UPnP SSDP Internet Gateway Device Discovery Example
+//
+
+var dgram         = require('dgram')
+  , ssdpAddress   = '239.255.255.250'
+  , ssdpPort      = 1900
+  , sourceIface   = '0.0.0.0'         // or ip (i.e. '192.168.1.101', '10.0.1.2')
+  , sourcePort    = 65001             // 0 for random
+  , searchTarget  = 'urn:schemas-upnp-org:device:InternetGatewayDevice:1'
+  , socket
+  ;
+
+function broadcastSsdp() {
+  var query
+    ;
+
+  // described at bit.ly/1zjVJVW
+  query = new Buffer(
+    'M-SEARCH * HTTP/1.1\r\n'
+  + 'HOST: ' + ssdpAddress + ':' + ssdpPort + '\r\n'
+  + 'MAN: "ssdp:discover"\r\n'
+  + 'MX: 1\r\n'
+  + 'ST: ' + searchTarget + '\r\n'
+  + '\r\n'
+  );
+
+  // Send query on each socket
+  socket.send(query, 0, query.length, ssdpPort, ssdpAddress);
+}
+
+function createSocket() {
+  socket = dgram.createSocket('udp4');
+
+  socket.on('listening', function () {
+    console.log('socket ready...');
+
+    broadcastSsdp();
+  });
+
+  socket.on('message', function (chunk, info) {
+    var message = chunk.toString();
+
+    console.log('[MESSAGE RECEIVED]');
+    console.log(info);
+    console.log(message);
+  });
+
+  console.log('Will bind to', (sourceIface + ':' + sourcePort));
+  socket.bind(sourcePort, sourceIface);
+}
+
+createSocket();