I've updated the doc to make this clear, and will change the examples
in the Guide accordingly.

Thanks for spotting this problem!

https://github.com/hintjens/libzmq/commit/7533ebb33d1cc6f23061e0228bf7eb22713aaa17

-Pieter

On Mon, Nov 19, 2012 at 10:01 AM, Pieter Hintjens <[email protected]> wrote:
> Stathis,
>
> I've tested this in detail.
>
> Tthere seems to be a problem with the HWM in the ROUTER, which is
> dropping outgoing messages unexpectedly. That is, the HWM setting of
> 10 isn't actually enough for 10 outgoing messages.
>
> What it looks like is that the HWM is in fact per message frame, not
> per message. So in this case you'd have to use:
>
>     zsocket_set_hwm (router, PIPELINE * 2);
>
> In the router since the identity frame is counted in the HWM calculation.
>
> This is a bug IMO, or at least it's rather surprising.
>
> -Pieter
>
>
>
>
> On Mon, Nov 19, 2012 at 3:13 AM, Stathis Gkotsis
> <[email protected]> wrote:
>> Indeed, sorry about this, here are the two links to the code:
>>
>> http://pastebin.com/1DLa4e2J
>> http://pastebin.com/cbJUxJB4
>>
>> Thanks,
>> Stathis
>> ________________________________________
>> From: [email protected] 
>> [[email protected]] On Behalf Of Min [[email protected]]
>> Sent: Sunday, November 18, 2012 7:36 PM
>> To: ZeroMQ development list
>> Subject: Re: [zeromq-dev] Problem with fileserver / fileclient
>>
>> The two links seem to be identical.
>>
>> Could you upload the client code also ?
>>
>> Thanks
>> Min
>>
>>
>> On Mon, Nov 19, 2012 at 1:22 AM, Stathis Gkotsis 
>> <[email protected]<mailto:[email protected]>> 
>> wrote:
>> Hello,
>>
>>    I am using zeromq v3.2.1-RC2 on Ubuntu 10.04 / Ubuntu 12.04 64bit. I 
>> created two simple apps: one fileserver and one fileclient, based on the 
>> "File Transfer" example code in the documentation 
>> (http://zguide.zeromq.org/page:all#header-151 , model 3). The code for these 
>> two example apps can be found here: http://pastebin.com/AuGU9EDC and here: 
>> http://pastebin.com/LusbjGCa . As you can see, I use a file of 100KB.
>>
>> The problem is that when I start the server and then run the client multiple 
>> times, sometimes it receives less than 102400 bytes, like: 98304 or 94208 or 
>> 90112 bytes. For example, when I run the client 1000 times with an interval 
>> of 100ms between the runs, for 970 runs it receives 12400 bytes, while for 
>> the rest (30 runs) it receives less bytes. I am bit puzzled by this, could 
>> you help?
>>
>> Thanks,
>> Stathis
>> _______________________________________________
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>> [email protected]<mailto:[email protected]>
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>
>> _______________________________________________
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