Thank you for your explanations.
It was the first time I got the nonblocking connect error.
Sorry to trouble you.
2016-06-20 22:09 GMT+03:00 David Matthews <david.matth...@prolingua.co.uk>:
> Can you send a more complete test program? All the tests I have run have
> worked as expected.
>
> > We get raise SysErr immediately after Socket.connectNB to a non-existent
> > server.
> > However, it is a nonblocking connect, so we should get information about
> > unsuccesful connecton only after socket access.
>
> What do you mean by this? If you use connectNB to connect to a service
> that is not yet running you will get a ECONNREFUSED error. The only
> question is where. If the underlying "connect" system call returns the
> error immediately then connectNB will raise an exception. Whether it does
> or not depends on the system kernel.
>
> David
>
>
> On 20/06/2016 14:52, Kostirya wrote:
>
>> Hello.
>>
>> Yes. It's worked when IP not 127.0.0.1.
>> But is not worked whatever with NetHostDB.getByName "localhost".
>> Probably bug have somewhere else.
>>
>> I use Poly/ML version from
>> commit fccf59807aea1d12f11b49f80f38b7137ad8b642
>> Author: David Matthews <d...@prolingua.co.uk>
>> Date: Wed May 25 17:09:38 2016 +0100
>>
>> It's later than
>>
>> git show 0d050ae45
>>>
>> commit 0d050ae450de3d5546deef873aa2b5486e64dea2
>> Author: David Matthews <d...@prolingua.co.uk>
>> Date: Thu May 19 15:48:58 2016 +0100
>>
>>
>> P.S.
>>
>> cat 1.sml
>>>
>> val h0 = NetHostDB.addr(valOf(NetHostDB.getByName "localhost"))
>> val h1 = valOf(NetHostDB.fromString "127.0.0.1")
>> val _ = (if h0 = h1 then print "OK\n" else print "ERROR\n")
>>
>>> poly --script 1.sml
>>>
>> OK
>>
>>
>> Nick.
>>
>> 2016-06-20 16:02 GMT+03:00 David Matthews <david.matth...@prolingua.co.uk
>> >:
>>
>> It's not actually a bug with Socket.connectNB. There was a bug in
>>> NetHostDB.scan and NetHostDB.fromString which meant that IP addresses
>>> such
>>> as 127.0.0.1 were not handled correctly. This was fixed in git master in
>>> commit 0d050ae45. You can work around the problem using
>>> NetHostDB.getByName "localhost".
>>>
>>> David
>>>
>>>
>>> On 20/06/2016 10:21, Kostirya wrote:
>>>
>>> Hello, all.
>>>>
>>>> Socket.connectNB behaves oddly in Poly/ML.
>>>>
>>>> We get raise SysErr immediately after Socket.connectNB to a non-existent
>>>> server.
>>>> However, it is a nonblocking connect, so we should get information about
>>>> unsuccesful connecton only after socket access.
>>>>
>>>> The source code is attached and here is the results for Poly/ML:
>>>>
>>>> ./a.out
>>>>
>>>>>
>>>>> exc in 2 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> exc in 3 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> exc in 4 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> .
>>>> .
>>>> ^C
>>>>
>>>> ./a.out
>>>>>
>>>>> exc in 1 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> exc in 2 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> exc in 3 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> exc in 4 socket: SysErr ("Connection refused", SOME ECONNREFUSED)
>>>> .
>>>> .
>>>> ^C
>>>>
>>>> We usually get errors in this situation. I've tested on Linix and
>>>> FreeBSD.
>>>>
>>>> MLton and SML/NY don't get errors in the same situation.
>>>>
>>>> NIck.
>>>>
>>>>
>>>>
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>>
>>
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