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Re: Get-pure-port aborts giving error 10054

FYI, I noticed that on my W2K machine using IE 5.5 against the PLT web
server and the sample web pages, some pages take a *long* time to
"complete" downloading. Really, they don't complete--IE just times out.
(The web page is loaded, but the icon keeps dancing for a while.) The dev
branch had the same problem.

Netscape 4.7 and Opera don't have this problem. They also don't have the
market share. :-)

This fix didn't patch *that* problem... but it looks like a similar kind of
protocol issue. (I don't remember seeing this kind of thing with any of the
other web servers on this machine.)

                    Matthew Flatt                                                                                             
                    <mflatt@cs.utah.edu>          To:     Jens Axel Søgaard <jensaxel@soegaard.net>                           
                    Sent by:                      cc:     <plt-scheme@fast.cs.utah.edu>                                       
                    owner-plt-scheme@fast.c       Subject:     Re: Get-pure-port aborts giving  error 10054                   
                    04/15/2002 10:30 AM                                                                                       

At Sun, 14 Apr 2002 10:53:19 +0200, Jens_Axel_Søgaard wrote:
> The following expression aborts my program.
> > (get-pure-port (string->url "http://www.tedgoff.com/mb/images/today.gif
> tcp-read: error reading (Unknown error; errno=10054)

Looks like the URL library's HTTP client protocol has always been
broken. It's using #\newline for end-of-line in the HTTP request
header, instead of a #\return #\newline sequence. (Apparently, most
HTTP servers are forgiving, but not the one at www.tedgeoff.com.)

Fixed and exp-tagged in CVS.

To repair 200alpha12, go to plt/collects/net/url-unit.ss and replace
each of the two instances of
    (newline client->server)
    (display "\r\n" client->server)