Add port and hostname options instead of trying to autodetect them.

README.md

@@ -72,6 +72,13 @@ Browserify bundle is accessible at. In "websocket" mode, this defaults to
 "http://localhost:3123". This is required for the "ajax" mode. This is not
 required for "fs" mode.
 
+`p, port` is a number that sets the port to listen on if "websocket" mode is
+used. If you change this, you'll most likely want to change the `url` setting
+too. Defaults to 3123.
+
+`h, hostname` is the hostname to listen on if "websocket" mode is used. This
+defaults to "localhost".
+
 `b, cacheBust` is a boolean which controls whether cache busting should be used
 for AJAX requests. This only has an effect if the update mode is set to "ajax".
 If true, then a random parameter is appended to the URL on every request. This

index.js

@@ -61,6 +61,8 @@ module.exports = function(bundle, opts) {
     updateMode = 'ajax';
   }
   var updateUrl = readOpt(opts, 'url', 'u', null);
+  var port = readOpt(opts, 'port', 'p', 3123);
+  var hostname = readOpt(opts, 'hostname', 'h', 'localhost');
   var updateCacheBust = boolOpt(readOpt(opts, 'cacheBust', 'b', false));
   var bundleKey = readOpt(opts, 'key', 'k', updateMode+':'+updateUrl);
   var cert = readOpt(opts, 'tlscert', 'C', null);
@@ -73,12 +75,6 @@ module.exports = function(bundle, opts) {
   var sioPath = null;
   if (updateMode === 'websocket') {
     if (!updateUrl) updateUrl = 'http://localhost:3123';
-
-    var m = /:\/\/([^\/:]+)(?::(\d+))?/.exec(updateUrl);
-    if (!m) throw new Error("Failed to parse update url");
-    var hostname = m[1];
-    var port = m[2] ? +m[2] : 80;
-
     sioPath = './'+path.relative(basedir, require.resolve('socket.io-client'));
   }