Here is my xs routine 
void
GenerateSessionID(session_id)
        SV  *session_id
    PREINIT:
        char *array = "";
        STRLEN len;
      
        session_id = NULL;
    PPCODE:
          len = 17;
          session_id = newSVpvn(array,17); //allocating memory 16 + 1 
+for null
          if(!SvPOK(session_id)){
             XSRETURN_UNDEF;
          }
        sv_setpvn(session_id, "\0",len); //Intializing it to NULL? Don
+'t know if this wrks
       
          array  = SvPV(session_id,len); /*convert the scalar into a c
+har*/
                            
        if(XSessionID((uuid_t*)array)){ //uuid is unsigned char[16]
   
           EXTEND(SP,17);
         
          PUSHs(sv_2mortal(newSVpv((char*)array,(int)len)));
           
        }

[download]
When I call the function in Perl as $result  = GenerateSessionID(\$uuid), I try printing result, and I get garbage. Contents of array in xsub look like [ ea 01 e8 b8 79 ed 11 e1 a7 31 00 0c 29 be c3 da ]. My question, is that how do I access this unsigned char when pushed onto the stack in perl? The memory allocated will be freed in a CloseSession call(). I would really appreciate your help. Thanks

In reply to Need to pass an unsigned char array from an xsub back to Perl by Anonymous Monk

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