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As of version 2.4 (bundled with Tcl 8.4), http only supports 1.0.
Pat Thoyts, October 2002: "... I got interested in enhancing the stock Tcl http package for HTTP/1.1. That is the Tcl http client. My mods are in the tclsoap CVS at sourceforge (because I can easily dump stuff there) but since then Phil Dietz has done more work on this."
In [L1 ], various people discuss 1.1, among other things; Pat summarizes the remarks in http://tclsoap.sourceforge.net/http.html .
Interesting 1.1 aspects include persistent connections, required mode, PUT, keep-alive (?), certificates (?), ...
Others thinking about 1.1 include Mats Bengtsson, Eric Boudallier, ...
It seems as if TclSOAP has a proposed version of the http package which supports persistent connection (see above). What else is needed for HTTP 1.1 (and things like the webdav extensions to HTTP 1.1)? Is there a simple overview document which describes in a simple way what the differences really are?
Phil Dietz and Eric Boudallier have opened a SourceForge project for this with the project name of tclhttp1-1 [L2 ]
Any useful code from the other http1.1 enhanced packages should get merged into this one [PT]