- From: Stefan Eissing <stefan.eissing@greenbytes.de>
- Date: Tue, 27 Apr 2004 09:56:20 +0200
- To: Jamie Lokier <jamie@shareable.org>
- Cc: Julian Reschke <julian.reschke@gmx.de>, HTTP working group <ietf-http-wg@w3.org>, Mark Nottingham <mnot@mnot.net>
Am 27.04.2004 um 09:42 schrieb Jamie Lokier: > > Julian Reschke wrote: >>> Just curious - does anyone know of OPTIONS being used "in the wild" >>> at all? >>> If so, how? >> >> OPTIONS is used quite heavily by WebDAV clients for feature discovery. >> They usually use both the Allow header and the DAV-specific "Dav" >> header >> (<http://greenbytes.de/tech/webdav/rfc2518.html#HEADER_DAV>). > > OPTIONS is also used in principle for "Upgrading to TLS Within > HTTP/1.1" (RFC2817). I don't know if it's actually deployed. > > -- Jamie It is also used when clients have to make a cheap call without side effects. For example in order to trigger authentication before making other requests which are either expensive or cannot be repeated. Another example is the infamous NTLM authentication scheme which requires at least two requests per new connection. //Stefan
Received on Tuesday, 27 April 2004 03:57:07 UTC