SLI_SEND/SLI_RECEIVE Can Send/Receive A Maximum Of 65 KB Of Data[sna]
ID: Q186054    CREATED: 21-MAY-1998   MODIFIED: 06-JAN-1999
WINDOWS:2.1,2.11,2.11SP1,2.11SP2,3.0,3.0SP1,3.0SP2,3.0SP3,4.0,4.0SP1
WINDOWS

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The information in this article applies to:

 - Microsoft SNA Server, versions 3.0, 3.0SP1, 3.0SP2, 3.0SP3, 
 4.0, 4.0SP1
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SYMPTOMS
========

The SLI_SEND and SLI_RECEIVE verbs can only send or receive a maximum of
65 kilobytes (KB) of data each time they are issued by a SLI application.

The lua_data_length parameter is used to specify the amount of data to be
sent in a SLI_SEND verb. The SLI_RECEIVE verb uses the lua_max_length
parameter to specify the length of the buffer that is to be used to receive
data.

CAUSE
=====

The 65-KB data length per SLI_SEND/SLI_RECEIVE is by design. The
lua_data_length and lua_max_length parameters are defined as Unsigned
Integers (unsigned int), which limits their maximum values to 2^16 bytes
(approximately 65 KB).

MORE INFORMATION
================

The SLI API has been extended to include the following new verbs:

 - SLI_SEND_EX
 - SLI_RECEIVE_EX

These new verbs can be used instead of SLI_SEND and SLI_RECEIVE in those
SLI applications that require sending or receiving more than 65 KB of data
with each send or receive issued. These new SLI verbs include the following
new parameters:

   SLI_SEND_EX:     lua_data_length_ex
   SLI_RECEIVE_EX:  lua_max_length_ex

Each of these new parameters is defined as Unsigned Long Integers (unsigned
long), which allows their maximum values to be 2^32 bytes (approximately 4
GB).

These SLI API updates are available after applying the fix or service pack
mentioned previously.

Please refer to the SNA Server LUA Programmer's Guide for more details on
both the RUI and SLI APIs included with SNA Server.