The following reply was made to PR general/2482; it has been noted by GNATS.
From: Dennis Lundberg <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Cc: Subject: general/2482: Missing environment variables on exec cgi Date: Mon, 29 Jun 1998 10:16:53 +0200 Hello again After some serious log-parsing and version-switching I have come to the following conclusion which, I belive, should close this bugreport. In 1.3b5 the environment variable REMOTE_HOST always exists. REMOTE_HOST would either contain a valid hostname or, if the dns-lookup failed, it would contain the ip-number instead. The ip-number can always be found in REMOTE_ADDR. In 1.3.0 REMOTE_HOST only exists if the dns-lookup was successful. The ip-number can always be found in REMOTE_ADDR. Since my cgi-program relied on REMOTE_HOST to exist and contain a value it failed to work properly after the upgrade from 1.3b5 to 1.3.0. I have rewritten my program and now it works fine with 1.3.0. Perhaps a note about this change in environment-variables could find it's way into the Apache-docs (http://www.apache.org/docs/upgrading_to_1_3.html). Here follows the environment-variables for a complete reference: 1.3b5 =3D=3D=3D=3D=3D Client in DNS ------------- SERVER_SOFTWARE =3D Apache/1.3b5 REMOTE_ADDR =3D 130.238.208.99 REMOTE_HOST =3D dlg.adm.mdh.se SCRIPT_NAME =3D /cgi-bin/printenv Client not in DNS ----------------- SERVER_SOFTWARE =3D Apache/1.3b5 REMOTE_ADDR =3D 130.238.208.99 REMOTE_HOST =3D 130.238.208.99 SCRIPT_NAME =3D /cgi-bin/printenv 1.3.0 =3D=3D=3D=3D=3D=3D Client in DNS ------------- SERVER_SOFTWARE =3D Apache/1.3.0 (Unix) REMOTE_ADDR =3D 130.238.208.99 REMOTE_HOST =3D dlg.adm.mdh.se SCRIPT_NAME =3D /cgi-bin/printenv =20 Client not in DNS ----------------- SERVER_SOFTWARE =3D Apache/1.3.0 (Unix) REMOTE_ADDR =3D 130.238.208.99 SCRIPT_NAME =3D /cgi-bin/printenv _____________________________________________________ Dennis Lundberg ICQ: 9841019, [EMAIL PROTECTED] http://www.mdh.se/cgi-bin/person?Dennis+Lundberg tel: +46-(0)21-101516, fax: +46-(0)21-101544 M=E4lardalens h=F6gskola, Box 883, 72123 V=E4ster=E5s, SWEDEN
