Jason R. Coombs <[email protected]> added the comment:
Indeed, if I apply this patch:
```
diff --git a/Lib/http/server.py b/Lib/http/server.py
index 47a4fcf9a6..de995ae4b9 100644
--- a/Lib/http/server.py
+++ b/Lib/http/server.py
@@ -1246,6 +1246,11 @@ def test(HandlerClass=BaseHTTPRequestHandler,
"""
ServerClass.address_family, addr = _get_best_family(bind, port)
+ def server_bind(self, orig=ServerClass.server_bind):
+ self.socket.setsockopt(socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
+ return orig(self)
+ ServerClass.server_bind = server_bind
+
HandlerClass.protocol_version = protocol
with ServerClass(addr, HandlerClass) as httpd:
host, port = httpd.socket.getsockname()[:2]
```
And then run `python -m http.server`, it binds to `::` but responds on
`127.0.0.1` on Windows:
```
~ # python -m http.server
Serving HTTP on :: port 8000 (http://[::]:8000/) ...
::ffff:127.0.0.1 - - [05/Jan/2020 14:48:09] "GET / HTTP/1.1" 200 -
```
I think the solution is to add a patch similar to that until Python has a
socketserver that supports dual-stack binding. See related issues issue25667,
issue20215, issue36208, issue17561, and issue38907.
In fact, since issue38907 captures more concretely what I believe is the main
issue here, I'm going to use that issue to address the concern. If Windows is
able to bind dual-stack to IPv6/IPv4, I believe that would address the
compatibility concern raised herein.
I'm going to mark this as a duplicate, but if you believe there is another
issue at play here, please don't hesitate to re-open or comment and I can.
----------
resolution: -> duplicate
status: open -> pending
superseder: -> Add IPv6 Dual-Stack control for http.server
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<https://bugs.python.org/issue39211>
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