<html><head><title>web_server (Editing Mon Oct 13 13:45:39 EDT 2008 version)</title><META http-equiv="Content-Type" content="text/html; charset=utf-8"></head><!-- FFFFE9 is acme yellow; FFFFE9 is as close as you can get to it before charon decides to use  grey instead of map entry 254 --><body bgcolor="#FFFFE9" link="#0000AA" alink="#0000AA" vlink="#0000AA"><center><font size=+2><b>web_server</b></font> (Editing Mon Oct 13 13:45:39 EDT 2008 version)</center><p> For information on editing, see thedescription of <a href="../0">Plan 9 wiki syntax</a>.<p><form action="/magic/wikipost" method="post"><table><tr><td valign=top><input type="submit" name="x" value="Put"></td><td><table><tr><td align=right>(optional) Comment:</td><td><input type="text" name="comment" value="" cols=40></td></tr><tr><td align=right>(optional) Email:</td><td><input type="text" name="author" value="" cols=40></td></tr></table><input type="hidden" name="title" value="web_server"><input type="hidden" name="version" value="1223919939"><input type="hidden" name="service" value="plan9"><input type="hidden" name="base" value="/wiki/plan9"><p><textarea name="text" wrap="virtual" cols="80" rows="25">The Plan 9 web server httpd(8) has some interesting features. It alsokept me scratching my head all day getting it going so I thought I'dshare a few things. When the httpd runs it sets itself to user "none" and runs newns(2)and then addns(2) using the namespace provided on the command line(or /lib/namespace.httpd if you didn't give it a -n). This means thatwhatever you supply for the namespace file has to exist in the newnamespace. ip/httpd/httpd -n /cfg/$sysname/namespace.httpd was mysolution. While experimenting I had the problem of how to kill a process ownedby none, here's how to do it : ! p = `{ps | grep httpd}! chmod 777 /proc/$p(2) ^/note && echo kill > /proc/$p(2) ^/note I'm assuming only one program called httpd is running, of course. For extra fun ip/httpd/mirror was missing from my distribution (Sept07) and I didn't notice for ages. momo here is a Unix box running u9fs -a none and I'm using a terminalto play on so termrc it is cat /cfg/$sysname/termrc ! fn start_httpd {! 	rfork! 	bind /n/momo/home/plan9/httpd /usr! 	bind /usr/httpd.rewrite /sys/lib/httpd.rewrite! 	ip/httpd/httpd -n /cfg/$sysname/namespace.httpd! }! ! 9fs momo! ! start_httpd & The folder /n/momo/home/plan9/httpd has in it : ! bin/! web/! httpd.rewrite cat /cfg/$sysname/namespace.httpd ! mount /srv/momo /n/momo! bind /n/momo/home/plan9/httpd/bin /bin/ip/httpd So now my /magic/ files are kept on momo so I don't pollute/bin/ip/httpd I also found a bug with vhosts and submitted a patch(1)httpd-post-port because vhosts running on non-default port wereimpossible as the :port was being stripped when the vhosts wereparsed but not when matching http requests. Leaving the :port on isthe correct behaviour according to RFC 2616 14.23. </textarea><p></td></table></form> <hr><table width=100%><tr><td valign=center align=left></td><td valign=center align=right><a href="../about.html">About the server</a>| <a href="http://plan9.bell-labs.com/plan9"><img src="http://plan9.bell-labs.com/plan9/img/power36.gif"alt="Powered by Plan 9"></a></td></tr></table></html></body>