SAP NW RFC SDK throws RFC_INVALID_PARAMETER when running sample programs?

Question

Hi there,
I have just downloaded the latest version of the SAP NW RFC SDK (NWRFC_7-20004565.SAR) for Linux 64 bit from the Service Marketplace and am trying to run the demo programs.
NOTE: I removed the "sapnwrfc.ini" from the current directory so that it would not be used at all..
Also note that I can use the OLD RFC SDK and connect happily to the same SAP system I am trying to connect to below using the SAP NW RFC SDK....so I definetly have the cirrect settings.....
So I compiled a CLIENT test program like:
gcc -m64 -Wall -g ./sflightClient.c -I/home/lynton/Desktop/nwrfcsdk/include -L/home/lynton/Desktop/nwrfcsdk/lib -lsapnwrfc -lsapucum -o ./sflightClient
And then passed in VALID paramters to an SAP system I have access to and I keep getting RFC_INVALID_PARAMETER even though I have not touched the code below in the sflightClient.c program
     loginParams[0].name = cU("ashost");     loginParams[0].value = argc > 1 ? argv[1] : cU("hostname");
     loginParams[1].name = cU("sysnr");     loginParams[1].value = argc > 2 ? argv[2] : cU("50");
     loginParams[2].name = cU("user");     loginParams[2].value = argc > 3 ? argv[3] : cU("user");
     loginParams[3].name = cU("passwd");     loginParams[3].value = argc > 4 ? argv[4] : cU("******");     
     loginParams[4].name = cU("client");     loginParams[4].value = argc > 5 ? argv[5] : cU("800");
     loginParams[5].name = cU("lang");     loginParams[5].value = cU("EN");
I have also tried the stfcDeepTableServer.c program....and there I put in VALID settings....(and made the parameters UPPERCASE just like the settings in the "sapnwrfc.ini" file....
serverCon[0].name = cU("PROGRAM_ID");     serverCon[0].value = cU("TEST_SERVER");
        serverCon[1].name = cU("GWHOST");     serverCon[1].value = cU("test.server");
     serverCon[2].name = cU("GWSERV");     serverCon[2].value = cU("sapgw00");
     repoCon[0].name = cU("CLIENT");     repoCon[0].value = cU("000");
     repoCon[1].name = cU("USER");          repoCon[1].value = cU("BCUSER");
     repoCon[2].name = cU("PASSWD");     repoCon[2].value = cU("minisap");
     repoCon[3].name = cU("LANG");          repoCon[3].value = cU("EN");
     repoCon[4].name = cU("ASHOST");     repoCon[4].value = cU("test.server");
     repoCon[5].name = cU("SYSNR");     repoCon[5].value = cU("00");
        repoCon[6].name = cU("TRACE");     repoCon[6].value = cU("3");
I have the UUIDD daemon running perfectly on my box, but yet I keep getting this RFC_INVALID_PARAMETER regardless if I just test the SERVER REGISTRATION or a simple client connection.
I am connecting to a NON unicode system but that would not make a difference.....
Any idea what would cause this? Any help would be greatly appreciated ....
Thanks
Lynton

Answer 1

I have similar problem. My simply program use 7.10_x64_nwrfcsdk for Linux x64 and 7.10_IA32_nwrfcsdk for 32bit Linux. I has been prepared subroutine to convert ASCII to UTF16LE and control 2-byte Unicode length.
Program is working perfectly on x64 environment but didn't work on 32bit. I prepared log for it. In log converted to UTF16LE data are present as hex
x64
=================================================
Open library libsapnwrfc.so done, handle 0x1ccac00
ahost=10.146.0.53
61 0 73 0 68 0 6F 0 73 0 74 0
31 0 30 0 2E 0 31 0 34 0 36 0 2E 0 30 0 2E 0 35 0 33 0
sysnr=01
73 0 79 0 73 0 6E 0 72 0
30 0 31 0
client=500
63 0 6C 0 69 0 65 0 6E 0 74 0 
35 0 30 0 30 0
user=dybikowskiz
75 0 73 0 65 0 72 0
64 0 79 0 62 0 69 0 6B 0 6F 0 77 0 73 0 6B 0 69 0 7A 0
lang=EN
6C 0 61 0 6E 0 67 0
45 0 4E 0
Start login to SAP
Login to SAP done, handle 0x1d863b0
================================================
x32
================================================
Open library libsapnwrfc.so done, handle 0x900fb78
ahost=10.146.0.53
61 0 73 0 68 0 6F 0 73 0 74 0
31 0 30 0 2E 0 31 0 34 0 36 0 2E 0 30 0 2E 0 35 0 33 0 
sysnr=01
73 0 79 0 73 0 6E 0 72 0
30 0 31 0
client=500
63 0 6C 0 69 0 65 0 6E 0 74 0 
35 0 30 0 30 0
user=dybikowskiz
75 0 73 0 65 0 72 0
64 0 79 0 62 0 69 0 6B 0 6F 0 77 0 73 0 6B 0 69 0 7A 0
lang=EN
6C 0 61 0 6E 0 67 0
45 0 4E 0
Start login to SAP
----Error handling begin-----
errorInfo.code: 20
RFC_INVALID_PARAMETER
errorInfo.group: 5
EXTERNAL_RUNTIME_FAILURE
errorInfo.key: R
errorInfo.message:
-----Error handling end -----
No connect to SAP
Because ASCII conversion to UTF16LE (http://en.wikipedia.org/wiki/UTF-16) is very simple, I prepared function
char* ascii2utf16le( char *text_ascii)
    int rec=-1;
    int i=0;
    int j=0;
    int n=0; 
  size_t inbufsize = strlen(text_ascii);
  size_t outbufsize=(2*inbufsize);
   i=2*inbufsize;
  char *converted = calloc(outbufsize, sizeof(char));
    for(j=0;j<i;j++)
        if(0==(j%2))
            converted[j]=text_ascii[n];
            n++;
        } else {
          converted[j]=0;
        printf("%X ",converted[j]);
  printf("\n");
    char *converted_str = converted;
    return converted_str;
and next I use it to loginParams[0].name = ascii2utf16le("ashost"), etc.
Fixed-length Unicode representation expected by SAP R/3 is under control, but on Linux 32bit not work.
I haven't where is possible problem?