commit 31c4ad44f5f124f3e69d480a1b4d99ecd86dd10e Author: Nick Mathewson nickm@torproject.org Date: Thu May 9 11:45:02 2019 -0400

Add a function to test whether we have ipv6 support. --- lib/chutney/Host.py | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+)

diff --git a/lib/chutney/Host.py b/lib/chutney/Host.py new file mode 100644 index 0000000..75573d6 --- /dev/null +++ b/lib/chutney/Host.py @@ -0,0 +1,20 @@ + +import socket +import chutney.Util + +@chutney.Util.memoized +def is_ipv6_supported(): + """Return true iff ipv6 is supported on this host.""" + try: + s = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) + s.bind(("::1", 0)) + s.listen(128) + a = s.getsockname() + s2 = socket.socket(socket.AF_INET6, socket.SOCK_STREAM) + s2.settimeout(1) + s2.connect(a) + return True + except socket.error: + return False + +