Update py3dns recipe

Author: Neizvestnyj

pythonforandroid/recipes/py3dns/__init__.py

@@ -4,7 +4,7 @@
 class Py3DNSRecipe(PythonRecipe):
     site_packages_name = 'DNS'
     version = '3.2.1'
-    url = 'https://github.com/Neizvestnyj/py3dns/archive/{version}.zip'
+    url = 'https://launchpad.net/py3dns/trunk/{version}/+download/py3dns-{version}.tar.gz'
     depends = ['setuptools']
     patches = ['patches/android.patch']
     call_hostpython_via_targetpython = False

pythonforandroid/recipes/py3dns/patches/android.patch

@@ -1,19 +1,25 @@
 diff --git a/DNS/Base.py b/DNS/Base.py
-index 34a6da7..15f83a2 100644
+index 34a6da7..a558889 100644
 --- a/DNS/Base.py
 +++ b/DNS/Base.py
-@@ -49,9 +49,13 @@ defaults= { 'protocol':'udp', 'port':53, 'opcode':Opcode.QUERY,
-             'server': [] }
+@@ -15,6 +15,7 @@ import socket, string, types, time, select
+ import errno
+ from . import Type,Class,Opcode
+ import asyncore
++import os
+ #
+ # This random generator is used for transaction ids and port selection.  This
+ # is important to prevent spurious results from lost packets, and malicious
+@@ -50,8 +51,12 @@ defaults= { 'protocol':'udp', 'port':53, 'opcode':Opcode.QUERY,
 
  def ParseResolvConf(resolv_path="/etc/resolv.conf"):
--    "parses the /etc/resolv.conf file and sets defaults for name servers"
+     "parses the /etc/resolv.conf file and sets defaults for name servers"
 -    with open(resolv_path, 'r') as stream:
 -        return ParseResolvConfFromIterable(stream)
-+    try:
-+        "parses the /etc/resolv.conf file and sets defaults for name servers"
++    if os.path.exists(resolv_path):
 +        with open(resolv_path, 'r') as stream:
 +            return ParseResolvConfFromIterable(stream)
-+    except FileNotFoundError:
++    else:
 +        defaults['server'].append('127.0.0.1')
 +        return