From: Sean Gilbertson <prell@...>
Date: 2003-05-03T06:20:21+09:00
Subject: Re: Ruby (1.6.7) Net::FTP/OS call hang


	I am now happily using Resolv.rb with successful results.  Thank you 
very much!

	I tested out some file downloads to make sure that those would not 
freeze anything, and they didnt seem to at all.  Do you know of any 
other problem areas that I should look out for?

Thanks again,
	Sean


On Friday, May 2, 2003, at 03:54  PM, Dave Thomas wrote:

> Sean Gilbertson wrote:
>
>>     I think Ruby is a great language, and I would love to use it, but 
>> for one problem.  I am creating an FTP program to hone my Ruby 
>> skills, using RubyCocoa as a platform.  Everything is working well so 
>> far, except when I connect to an FTP server, all the threads hang.  I 
>> remember reading in the book that this is something to be expected in 
>> Ruby, as OS calls like this hang all threads when they dont return 
>> immediately.  Obviously this is going to be a huge problem, as all 
>> the benefits of multithreading are moot, when most of my threads will 
>> be doing FTP transactions.  My question is: Have and subsequent 
>> versions of Ruby remedied this problem?  I understand it is a symptom 
>> of how Ruby works, but knowing that does not help me.  I have looked 
>> for changelogs and such, with no luck so far.
>
> You're probably hanging doing the DNS lookup. Perhaps using the thread 
> aware resolv.rb library might help.
>
> Cheers
>
>
> Dave
>
>