From: Alex Young <alex@...>
Date: 2006-12-08T16:12:30+09:00
Subject: Re: NoMethodError in protocol.rb

Eric Hodel wrote:
> On Dec 7, 2006, at 02:13 , Alex Young wrote:
> 
>> Does this look familiar to anyone?
>>
>> NoMethodError: undefined method `+' for nil:NilClass at 
>> /usr/local/lib/ruby/1.8/net/protocol.rb:176:in `write0'
<snip>
>> def writing
>>   @written_bytes = 0
>>   @debug_output << '<- ' if @debug_output
>>   yield
>>   @debug_output << "\n" if @debug_output
>>   bytes = @written_bytes
>>   @written_bytes = nil
> 
> Yes, this is going to be a problem in a multithreaded environment.
> 
>>   bytes
>> end
>>
>> Is this a known thread-safety issue with a known solution, or would a 
>> patch be in order?  I've been testing this on 1.8.4, because that's 
>> what we've got in production.
> 
> I've not heard of it before.
> 
>> Does anyone know if it's been addressed in 1.8.5?
> 
> Doubtful.
> 
I've found a workaround for our code, anyway.  I'm not quite sure why I 
was surprised that the HTTP library isn't thread-safe :-)

Thanks,
-- 
Alex