HTTP::Daemon man page on BSDOS

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lib::HTTP::DaemUser)Contributed Perl Documentlib::HTTP::Daemon(3)

NAME
       HTTP::Daemon - a simple http server class

SYNOPSIS
	 use HTTP::Daemon;
	 use HTTP::Status;

	 $d = new HTTP::Daemon;
	 print "Please contact me at: <URL:", $d->url, ">\n";
	 while ($c = $d->accept) {
	     $r = $c->get_request;
	     if ($r) {
		 if ($r->method eq 'GET' and $r->url->path eq "/xyzzy") {
		     # this is *not* recommened practice
		     $c->send_file_response("/etc/passwd");
		 } else {
		     $c->send_error(RC_FORBIDDEN)
		 }
	     }
	     $c = undef;  # close connection
	 }

DESCRIPTION
       Instances of the HTTP::Daemon class are HTTP/1.1 servers
       that listens on a socket for incoming requests. The
       HTTP::Daemon is a sub-class of IO::Socket::INET, so you
       can do socket operations directly on it.

       The accept() method will return when a connection from a
       client is available. The returned value will be a
       reference to a object of the HTTP::Daemon::ClientConn
       class which is another IO::Socket::INET subclass. Calling
       the get_request() method on this object will read data
       from the client and return an HTTP::Request object
       reference.

       This HTTP daemon does not fork(2) for you.  Your
       application, i.e. the user of the HTTP::Daemon is
       reponsible for forking if that is desirable.  Also note
       that the user is responsible for generating responses that
       conforms to the HTTP/1.1 protocol.  The
       HTTP::Daemon::ClientConn provide some methods that make
       this easier.

METHODS
       The following is a list of methods that are new (or
       enhanced) relative to the IO::Socket::INET base class.

       $d = new HTTP::Daemon
	   The object constructor takes the same parameters as
	   the IO::Socket::INET constructor.  It can also be
	   called without specifying any parameters. The daemon
	   will then set up a listen queue of 5 connections and

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	   allocate some random port number.  A server that want
	   to bind to some specific address on the standard HTTP
	   port will be constructed like this:

	     $d = new HTTP::Daemon
		   LocalAddr => 'www.someplace.com',
		   LocalPort => 80;

       $c = $d->accept
	   Same as IO::Socket::accept but will return an
	   HTTP::Daemon::ClientConn reference.	It will return
	   undef if you have specified a timeout and no
	   connection is made within that time.

       $d->url
	   Returns a URL string that can be used to access the
	   server root.

       $d->product_tokens
	   Returns the name that this server will use to identify
	   itself.  This is the string that is sent with the
	   Server response header.

       The HTTP::Daemon::ClientConn is also a IO::Socket::INET
       subclass. Instances of this class are returned by the
       accept() method of the HTTP::Daemon.  The following
       additional methods are provided:

       $c->get_request
	   Will read data from the client and turn it into a
	   HTTP::Request object which is then returned. Will
	   return undef if reading of the request failed.  If it
	   fails, then the HTTP::Daemon::ClientConn object ($c)
	   should be discarded.

	   The $c->get_request method support HTTP/1.1 content
	   bodies, including chunked transfer encoding with
	   footer and multipart/* types.

       $c->antique_client
	   Returns TRUE if the client speaks the HTTP/0.9
	   protocol, i.e. no status code or headers should be
	   returned.

       $c->send_status_line( [$code, [$mess, [$proto]]] )
	   Sends the status line back to the client.

       $c->send_basic_header( [$code, [$mess, [$proto]]] )
	   Sends the status line and the "Date:" and "Server:"
	   headers back to the client.

       $c->send_response( [$res] )
	   Takes a HTTP::Response object as parameter and send it

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	   back to the client as the response.

       $c->send_redirect( $loc, [$code, [$entity_body]] )
	   Sends a redirect response back to the client.  The
	   location ($loc) can be an absolute or a relative URL.
	   The $code must be one the redirect status codes, and
	   it defaults to "301 Moved Permanently"

       $c->send_error( [$code, [$error_message]] )
	   Send an error response back to the client.  If the
	   $code is missing a "Bad Request" error is reported.
	   The $error_message is a string that is incorporated in
	   the body of the HTML entity body.

       $c->send_file_response($filename)
	   Send back a response with the specified $filename as
	   content.  If the file happen to be a directory we will
	   generate a HTML index for it.

       $c->send_file($fd);
	   Copies the file back to the client.	The file can be a
	   string (which will be interpreted as a filename) or a
	   reference to a glob.

       $c->daemon
	   Return a reference to the corresponding HTTP::Daemon
	   object.

SEE ALSO
       the IO::Socket manpage, the Apache manpage

COPYRIGHT
       Copyright 1996, Gisle Aas

       This library is free software; you can redistribute it
       and/or modify it under the same terms as Perl itself.

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