Bugfix in socks configuration

Author: yciabaud

lib/client/udp-tracker.js

@@ -71,8 +71,11 @@ UDPTracker.prototype._request = function (opts) {
   var socket
   var transactionId = genTransactionId()
   if (self.client._socksProxyOpts) {
+    if (!self.client._socksProxyOpts.proxy) {
+      self.client._socksProxyOpts.proxy = {}
+    }
     // UDP requests uses the associate command
-    self.client._socksProxyOpts.command = 'associate'
+    self.client._socksProxyOpts.proxy.command = 'associate'
     if (!self.client._socksProxyOpts.target) {
       // This should contain client IP and port but can be set to 0 if we don't have this information
       self.client._socksProxyOpts.target = {