arch::liteweb(3pm) [debian man page]

Arch::LiteWeb(3pm)					User Contributed Perl Documentation					Arch::LiteWeb(3pm)

NAME

       Arch::LiteWeb - simple way to access web pages

SYNOPSIS

	   my $web = Arch::LiteWeb->new;
	   my $content = $web->get("http://some.domain:81/some/path");
	   die $web->error . " while processing " . $web->request_url
	       unless $content;
	   my $content_type = $web->response_headers->{content_type};

DESCRIPTION

       This class provides a basic and easy to use support for the client-side HTTP.  It is supplied in order to avoid dependency on LWP. If such
       dependency is not a problem, consider to use LWP instead that provides much better support for HTTP and other protocols.

METHODS

       The following class methods are available:

       get, post, request_url, error, error_with_url, network_error, response_code, response_codestr, response_error, response_headers,
       response_content.

       get url [params ...]
	   Execute HTTP get of the given url and return the html string or undef on network/response error. Use other methods to get the details
	   about the error and the response.

	   params is key-value hash, the following keys are supported:

	       url_host 	   - only used if url is none
	       url_port 	   - only used if url is none(80)
	       url_path 	   - only used if url is none
	       endl		   - default is "1512"
	       timeout		   - default is 20 seconds
	       user_agent	   - default is "Arch::LiteWeb/0.1"
	       nocache		   - add a no-cache header
	       noredirect	   - don't follow redirect responses
	       max_redirect_depth  - default is 5
	       use_proxy	   - default is false
	       proxy_url	   - proxy url ($http_proxy supported too)
	       proxy_host	   - only used if proxy_url is none
	       proxy_port	   - only used if proxy_url is none(80)

       post url input [params]
	   Not implemented yet.

       request_url
	   Actual url of the last issued request or undef. If partial redirect responses are enabled, then the result is the last (non-redirect)
	   url.

       error
	   If the last request resulted in error (i.e. get/post returned undef), then this method returns the error message, otherwise it returns
	   undef.  This is just a shortcut for network_error || response_error.

       error_with_url
	   Like error, but with "
while fetching request_url
" text appended if non undef.

       network_error
	   The network error message for the last request or undef.

       response_error
	   The response error message for the last request or undef.

       response_code
	   The last response code (integer) or undef.

       response_codestr
	   The last response code (string) or undef.

       response_headers
	   The last response headers (hashref of HTTP headers) or undef.

       response_content
	   The last response content or undef.	This is the same thing that the last get/post returns.

BUGS

       Not intended for use in mission-critical applications.

AUTHORS

       Mikhael Goikhman (migo@homemail.com--Perl-GPL/arch-perl--devel).

SEE ALSO

       For more information, see LWP, LWP::Simple.

perl v5.10.1							    2005-03-25							Arch::LiteWeb(3pm)

LWP::Simple(3pm)					User Contributed Perl Documentation					  LWP::Simple(3pm)

NAME

       LWP::Simple - simple procedural interface to LWP

SYNOPSIS

	perl -MLWP::Simple -e 'getprint "http://www.sn.no"'

	use LWP::Simple;
	$content = get("http://www.sn.no/");
	die "Couldn't get it!" unless defined $content;

	if (mirror("http://www.sn.no/", "foo") == RC_NOT_MODIFIED) {
	    ...
	}

	if (is_success(getprint("http://www.sn.no/"))) {
	    ...
	}

DESCRIPTION

       This module is meant for people who want a simplified view of the libwww-perl library.  It should also be suitable for one-liners.  If you
       need more control or access to the header fields in the requests sent and responses received, then you should use the full object-oriented
       interface provided by the "LWP::UserAgent" module.

       The following functions are provided (and exported) by this module:

       get($url)
	  The get() function will fetch the document identified by the given URL and return it.  It returns "undef" if it fails.  The $url
	  argument can be either a string or a reference to a URI object.

	  You will not be able to examine the response code or response headers (like 'Content-Type') when you are accessing the web using this
	  function.  If you need that information you should use the full OO interface (see LWP::UserAgent).

       head($url)
	  Get document headers. Returns the following 5 values if successful: ($content_type, $document_length, $modified_time, $expires, $server)

	  Returns an empty list if it fails.  In scalar context returns TRUE if successful.

       getprint($url)
	  Get and print a document identified by a URL. The document is printed to the selected default filehandle for output (normally STDOUT) as
	  data is received from the network.  If the request fails, then the status code and message are printed on STDERR.  The return value is
	  the HTTP response code.

       getstore($url, $file)
	  Gets a document identified by a URL and stores it in the file. The return value is the HTTP response code.

       mirror($url, $file)
	  Get and store a document identified by a URL, using If-modified-since, and checking the Content-Length.  Returns the HTTP response code.

       This module also exports the HTTP::Status constants and procedures.  You can use them when you check the response code from getprint(),
       getstore() or mirror().	The constants are:

	  RC_CONTINUE
	  RC_SWITCHING_PROTOCOLS
	  RC_OK
	  RC_CREATED
	  RC_ACCEPTED
	  RC_NON_AUTHORITATIVE_INFORMATION
	  RC_NO_CONTENT
	  RC_RESET_CONTENT
	  RC_PARTIAL_CONTENT
	  RC_MULTIPLE_CHOICES
	  RC_MOVED_PERMANENTLY
	  RC_MOVED_TEMPORARILY
	  RC_SEE_OTHER
	  RC_NOT_MODIFIED
	  RC_USE_PROXY
	  RC_BAD_REQUEST
	  RC_UNAUTHORIZED
	  RC_PAYMENT_REQUIRED
	  RC_FORBIDDEN
	  RC_NOT_FOUND
	  RC_METHOD_NOT_ALLOWED
	  RC_NOT_ACCEPTABLE
	  RC_PROXY_AUTHENTICATION_REQUIRED
	  RC_REQUEST_TIMEOUT
	  RC_CONFLICT
	  RC_GONE
	  RC_LENGTH_REQUIRED
	  RC_PRECONDITION_FAILED
	  RC_REQUEST_ENTITY_TOO_LARGE
	  RC_REQUEST_URI_TOO_LARGE
	  RC_UNSUPPORTED_MEDIA_TYPE
	  RC_INTERNAL_SERVER_ERROR
	  RC_NOT_IMPLEMENTED
	  RC_BAD_GATEWAY
	  RC_SERVICE_UNAVAILABLE
	  RC_GATEWAY_TIMEOUT
	  RC_HTTP_VERSION_NOT_SUPPORTED

       The HTTP::Status classification functions are:

       is_success($rc)
	  True if response code indicated a successful request.

       is_error($rc)
	  True if response code indicated that an error occurred.

       The module will also export the LWP::UserAgent object as $ua if you ask for it explicitly.

       The user agent created by this module will identify itself as "LWP::Simple/#.##" and will initialize its proxy defaults from the
       environment (by calling $ua->env_proxy).

CAVEAT

       Note that if you are using both LWP::Simple and the very popular CGI.pm module, you may be importing a "head" function from each module,
       producing a warning like "Prototype mismatch: sub main::head ($) vs none". Get around this problem by just not importing LWP::Simple's
       "head" function, like so:

	       use LWP::Simple qw(!head);
	       use CGI qw(:standard);  # then only CGI.pm defines a head()

       Then if you do need LWP::Simple's "head" function, you can just call it as "LWP::Simple::head($url)".

SEE ALSO

       LWP, lwpcook, LWP::UserAgent, HTTP::Status, lwp-request, lwp-mirror

perl v5.14.2							    2012-02-18							  LWP::Simple(3pm)