Listen on IPv6

[limbo127]

hello,
how listen only on specifiq ipv6 address

python /tmp/proxy.py --hostname [fd00::8e2:97ff:fe2e:f1ea] --port 8081 --log-level DEBUG
2019-04-18 15:32:05,116 - INFO - run:633 - Starting server on port 8081
2019-04-18 15:32:05,125 - ERROR - run:643 - Exception while running the server gaierror(-2, 'Name or service not known')
Traceback (most recent call last):
  File "/tmp/proxy.py", line 636, in run
    self.socket.bind((self.hostname, self.port))
  File "/usr/lib64/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
gaierror: [Errno -2] Name or service not known
2019-04-18 15:32:05,126 - INFO - run:645 - Closing server socket

python /tmp/proxy.py --hostname fd00::8e2:97ff:fe2e:f1ea --port 8081 --log-level DEBUG
2019-04-18 15:32:17,082 - INFO - run:633 - Starting server on port 8081
2019-04-18 15:32:17,082 - ERROR - run:643 - Exception while running the server gaierror(-9, 'Address family for hostname not supported')
Traceback (most recent call last):
  File "/tmp/proxy.py", line 636, in run
    self.socket.bind((self.hostname, self.port))
  File "/usr/lib64/python2.7/socket.py", line 228, in meth
    return getattr(self._sock,name)(*args)
gaierror: [Errno -9] Address family for hostname not supported
2019-04-18 15:32:17,082 - INFO - run:645 - Closing server socket

[abhinavsingh]

This should be possible with a single line of change

diff --git a/proxy.py b/proxy.py
index c633ac9..30532b9 100755
--- a/proxy.py
+++ b/proxy.py
@@ -631,7 +631,7 @@ class TCP(object):
     def run(self):
         try:
             logger.info('Starting server on port %d' % self.port)
-            self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            self.socket = socket.socket(socket.AF_INET6, socket.SOCK_STREAM)
             self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
             self.socket.bind((self.hostname, self.port))
             self.socket.listen(self.backlog)

However, instead of hardcoding AF_INET6 its better to enable IPv6 via a command line flag. I'll send out a PR to address the same. In the meantime, you can make this 1 line change to unblock yourself :)