Returns the ISAPI extension block.
call "PC_ISAPI_GET_EXT" using ext-block
returning pc-status-code
01 extension-control-block typedef 03 cbsize DWORD 03 dwversion DWORD 03 connid HCONN 03 dwhttpstatuscode DWORD 03 lpszlogdata PIC x(hse-log-buffer-len) 03 lpszmethod LPSTR 03 lpszquerystring LPSTR 03 lpszpathinfo LPSTR 03 lpszpathtranslated LPSTR 03 cbtotalbytes DWORD 03 cbavailable DWORD 03 lpbdata LPBYTE 03 lpszcontenttype LPSTR 03 getservervariable procedure-pointer 03 writeclient procedure-pointer 03 readclient procedure-pointer 03 serversupportfunction procedure-pointer
| 0 | OK |
| 1 | Non-ISAPI environment |
| 2 | cbsize smaller than current ISAPI extension block |