wine 0.9.5 IO completion port questions

[Ken Thomases]

On Dec 3, 2007, at 4:05 PM, Andrey Turkin wrote:

> Marius Slyzius wrote:
>> 2) possible bug: the server sends 1500 bytes with WsaSend ( with 2
>> WSABUFFER ) and the client receive only 1452 bytes and calls WsaRecv
>> again. Also on the server, the completion port receive event that
>> transferred 1452 bytes. However, the last 8 bytes are never sends nor
>> completion port event arrives. Is it perhaps something to do with the
>> VMWare tool where I run Ubuntu 7.10?
>>
> WsaSend can send partial data when operating on non-blocking socket;
> from your description it looks like this is the case. Is this error
> reproducible with the same numbers every run?
> Your both questions are actually not about IOCP but about asynchronous
> I/O support.


My brain may be misfiring, but isn't 1452 bytes a common MTU size?   
Are your client and server remote from one another?  In that case,  
your client may really be receiving 1452 data bytes first, with the  
rest coming a (very) short while later.

-Ken