.TH HTTPD 8
.SH NAME
httpd, echo \- HTTP server
.SH SYNOPSIS
.PP
.B http/httpd
[
.B -n
.I namespace
]
.I srvname netname netdir
.PP
.B http/echo
[
.B -n
.I namespace
] [
.B -d
.I domain
] [
.B -r
.I remoteip
]
.I method version uri
[
.I search
]
.SH DESCRIPTION
.I Httpd
serves the file system described by
.I namespace
(default
.BR /lib/namespace.http ),
using version 1.0 of the HTTP protocol.
It is usually executed by
.IR listen (8)
in response to an incoming call on TCP port 80, the HTTP port.
.I Srvname
is the name of the service invoked, typically
.BR tcp80 ,
.I netname 
is the name of the network, typically TCP,
and
.I netdir
is the network directory for the connection.
.PP
.I Httpd
supports only the GET and HEAD methods of the HTTP protocol.
The Content-type
(default application/octet-stream)
and Content-encoding
(default binary)
of a file are determined by looking for suffixes of the file name in
.BR /sys/lib/http .
.PP
If the requested URI begins with
.BI  /magic/ server /\f1,
.I httpd
executes the file
.BI /bin/http/ server
to finish servicing the request.
.IR Method ,
.IR version ,
and
.I uri
are those received on the first line of the request,
which is the only line read by
.I httpd
before executing the magical server.
.PP
.I Echo
is a trivial server that just returns the method, URI, any search,
and the headers sent by the client.
.SH FILES
.TF /lib/namespace.http
.TP
.B /sys/lib/http
content type description file
.TP
.B /lib/namespace.http
default namespace file for httpd
.SH SOURCE
.B /sys/src/cmd/httpd
.SH "SEE ALSO"
.I newns
in
.IR auth (2),
.IR listen (8)