Re: Re: bind to IPv6 only?

To works well, check_port() in wait_for_occupied_port() must raise IOError.
> To check, I write the small test script refer to check_port() function in 
> \Lib\site-packages\cherrypy\process\servers.py
> import socket
>
> #host = "::"
> host = "0:0:0:0:0:0:0:0"
> #host = "0.0.0.0"
> port = 7070
> timeout = 1.0
>
> info = socket.getaddrinfo(host, port, socket.AF_UNSPEC,
>                           socket.SOCK_STREAM)
>
> print info
>
> af, socktype, proto, canonname, sa = info[0]
>
> s = socket.socket(af, socktype, proto)
> s.settimeout(timeout)
> s.connect((host, port))
> s.close()
>
> Above script works well on CentOS 7, python 2.7.5.
>

How can it possibly work well?  You can bind a TCP server to INADDR_ANY so 
it listens on all available interfaces, but when you connect as a client, 
you have to provide a specific IP address.  You are not providing a valid 
host address.

Also, I agree with your opinon .
But, I did test many times and the result is same.
My test script don't raise any exception on my CentOS 7 test machine.

2016년 3월 30일 수요일 오전 1시 50분 26초 UTC+9, Tim Roberts 님의 말:
>
> young-kyun Kim wrote:
>
> I do more trace this issue.
>
>
> First, allow me to congratulate you on the thoroughness of your analysis, 
> and the detail in your description.  I'm not sure we will come up with the 
> answer, but you have certainly given us good information.
>
>
> To works well, check_port() in wait_for_occupied_port() must raise IOError.
> To check, I write the small test script refer to check_port() function in 
> \Lib\site-packages\cherrypy\process\servers.py
> import socket
>
> #host = "::"
> host = "0:0:0:0:0:0:0:0"
> #host = "0.0.0.0"
> port = 7070
> timeout = 1.0
>
> info = socket.getaddrinfo(host, port, socket.AF_UNSPEC,
>                           socket.SOCK_STREAM)
>
> print info
>
> af, socktype, proto, canonname, sa = info[0]
>
> s = socket.socket(af, socktype, proto)
> s.settimeout(timeout)
> s.connect((host, port))
> s.close()
>
> Above script works well on CentOS 7, python 2.7.5.
>
>
> How can it possibly work well?  You can bind a TCP server to INADDR_ANY so 
> it listens on all available interfaces, but when you connect as a client, 
> you have to provide a specific IP address.  You are not providing a valid 
> host address.
>
>
> But error occurred on Win 8.1, python 2.7.11.
> D:\test>testport.py
> [(23, 1, 0, '', ('::', 7070, 0, 0))]
> Traceback (most recent call last):
>   File "D:\test\testport.py", line 18, in <module>
>     s.connect((host, port))
>   File "C:\devtool\py27x86\lib\socket.py", line 228, in meth
>     return getattr(self._sock,name)(*args)
> socket.error: [Errno 10049]
>
>
> That's what I would expect.  For what it's worth, 10049 is 
> WSAEADDRNOTAVAIL.  I suspect it would work if you specified ::1 as the 
> address.
>
> -- 
> Tim Roberts, [email protected] <javascript:>
> Providenza & Boekelheide, Inc.
>
>

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