Clone proxy settings to prevent Socks instances concurrency

Author: yciabaud

lib/client/udp-tracker.js

@@ -5,6 +5,7 @@ var Buffer = require('safe-buffer').Buffer
 var compact2string = require('compact2string')
 var debug = require('debug')('bittorrent-tracker:udp-tracker')
 var dgram = require('dgram')
+var extend = require('xtend')
 var inherits = require('inherits')
 var randombytes = require('randombytes')
 var Socks = require('socks')
@@ -76,8 +77,9 @@ UDPTracker.prototype._request = function (opts) {
   var relay
   var transactionId = genTransactionId()
 
-  var proxyOpts = self.client._proxyOpts && self.client._proxyOpts.socksProxy
+  var proxyOpts = self.client._proxyOpts && extend(self.client._proxyOpts.socksProxy)
   if (proxyOpts) {
+    proxyOpts.proxy = extend(proxyOpts.proxy)
     if (!proxyOpts.proxy) {
       proxyOpts.proxy = {}
     }