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From David Zhao <davidlz...@gmail.com>
Subject Re: Detecting connection interruptions for uploads
Date Wed, 08 Oct 2008 18:15:20 GMT
Will switching to HttpClient 4.0 with the NIO option solve this issue?  
Or could I use NIO transport in HttpClient 3.1?

Thanks,

-David

On Oct 8, 2008, at 8:18 AM, Oleg Kalnichevski wrote:

> On Tue, 2008-10-07 at 13:35 -0700, David Zhao wrote:
>> Hi,
>>
>> I'm using http-client 3.1 in a java desktop client. I've noticed an
>> issue with doing file uploads while getting connection interrupted,
>> for example, a wifi connection that is no longer available. When that
>> happens, my client would freeze in FilePart#sendData where it times
>> out in the write method of java Socket.
>>
>> After digging around, I found this article:
>> http://209.85.173.104/search?q=cache:7lA5d6FTgzYJ:https://lists.spline.inf.fu-berlin.de/lurker/message/20071121.145132.dd820d54.es.html+SocketOutputStream+does+not+time+out&hl=en&ct=clnk&cd=1&gl=us&client=safari
>>
>> which describes:
>> ------------------------------------
>> AFAIKS, the actual problem here is:
>> java.net.SocketOutputStream.write() is
>> always a blocking operation, and it is also not by the java socket  
>> API
>> to
>> specify a timeout for write operations. Thus, it is simply not
>> possible to
>> return from SocketOutputStream.write() until all data are transferred
>> or the
>> TCP Stack gives up.
>> ------------------------------------
>>
>> Does anyone know of a work around for this issue?
>>
>
> I suspect the only option would be to use a NIO based transport.
>
> Oleg
>
>> Thanks,
>>
>> -David
>>
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>
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