DOCUMENT:Q186054 22-OCT-2000 [sna] TITLE :SLI_SEND/SLI_RECEIVE Can Send/Receive A Maximum Of 65 KB Of Data PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:2.1,2.11,2.11 SP1,2.11 SP2,3.0,3.0 SP1,3.0 SP2,3.0 SP3,4.0,4.0 SP1 OPER/SYS: KEYWORDS:kbbuglist ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, versions 2.1, 2.11, 2.11 SP1, 2.11 SP2, 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, 4.0 SP1 ------------------------------------------------------------------------------- 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). RESOLUTION ========== Microsoft has confirmed this to be a problem in SNA Server versions 2.1, 2.11, 2.11 SP1, 2.11 SP2, 3.0, 3.0 SP1, 3.0 SP2, 3.0 SP3, 4.0, and 4.0 SP1. SNA Server 3.0 -------------- A supported fix that corrects this problem is now available from Microsoft, but has not been fully regression tested and should be applied only to systems experiencing this specific problem. To resolve this problem immediately, contact Microsoft Technical Support to obtain the fix. If you are not severely impacted by this specific problem, Microsoft recommends that you wait for the next SNA Server 3.0 service pack that contains this fix. For SNA Server 3.0: File Name Date Time ---------------------------------- winsli32.dll 6/16/98 8:32AM snatrc.dll 6/16/98 8:29AM snatrccn.dll 6/16/98 8:29AM snatrcsn.dll 6/16/98 8:29AM SNA Server 4.0 -------------- This problem was corrected in the latest Microsoft SNA Server version 4.0 U.S. Service Pack. For information on obtaining this Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K 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. Additional query words: snalua snaprog ====================================================================== Keywords : kbbuglist Technology : kbAudDeveloper kbSNAServSearch kbSNAServ300 kbSNAServ211 kbSNAServ400 kbSNAServ210 kbSNAServ211SP1 kbSNAServ211SP2 kbSNAServ300SP3 kbSNAServ300SP1 kbSNAServ400SP1 kbSNAServ300SP2 Version : WINDOWS:2.1,2.11,2.11 SP1,2.11 SP2,3.0,3.0 SP1,3.0 SP2,3.0 SP3,4.0,4.0 SP1 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.