[courier-users] Re: Fun with authpipe

Sam Varshavchik wrote:
> Johnny Lam writes:
>=20
>> Sam Varshavchik wrote:
>>
>>> Johnny Lam writes:
>>>
>>>> Yes, that is true. I forgot to mention that I had doubled the=20
>>>> default number of authdaemond processes that are started from 5 to=20
>>>> 10. Despite the increased resource usage, I'm pleased that there=20
>>>> was a simple way to mix having a virtual shared folder setup with a=20
>>>> separate PAM-based authentication procedure.
>>>
>>>
>>>
>>> Replace =93five=94 with =93ten=94, in the given example.
>>
>>
>> I'm not sure I understand the point you're making, possibly due to my=20
>> misunderstanding how authdaemond works.
>=20
>=20
> It means that this approach will fail no matter how many authdaemond=20
> processes you have configured. If you set the number of processes to X=
,=20
> then if X connections arrive nearly simultaneously, then they will fail=
..
>=20
> Increasing the number of daemon processes does not totally eliminate th=
e=20
> problem, it only makes it less likely to occur.

You trimmed the question in my last post that essentially asked if this=20
same problem can occur with a default courier-authlib setup. In a=20
default courier-authlib setup, if I configure X authdaemond processes to=20
start, and then if X+1 connections arrive simultaneously, what is=20
supposed to happen? If one of the connections will timeout and fail,=20
then is there another solution aside from increasing the number of=20
authdaemond processes started? I apologize in advance that I don't=20
understand enough to read the source code to find the answer.

Thanks,

-- Johnny Lam <jlam@pkgsrc.org>


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