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Gisle Aas


HTTP::Daemon - a simple http server class


  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
          } else {
      $c = undef;  # close connection


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.


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 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 = $d->accept([$pkg])

Same as IO::Socket::accept but will return an HTTP::Daemon::ClientConn reference by default. It will return undef if you have specified a timeout and no connection is made within that time.


Returns a URL string that can be used to access the server root.


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:


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.


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 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.


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.


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.


Return a reference to the corresponding HTTP::Daemon object.


IO::Socket, Apache


Copyright 1996, Gisle Aas

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