NAME

HTTP::WebTest - Test remote URLs or local web files

SYNOPSIS

 This module can accept input parameters from a parameter file
 or subroutine arguments.

 TO RUN WEB TESTS DEFINED BY SUBROUTINE ARGUMENTS:

 use HTTP::WebTest qw(run_web_test);
 run_web_test(\@web_tests, \$num_fail, \$num_succeed, \%test_options)

 or

 use HTTP::WebTest qw(run_web_test);
 run_web_test(\@web_tests, \$num_fail, \$num_succeed)

 TO RUN WEB TESTS DEFINED BY A PARAMETER FILE:

 use sigtrap qw(die normal-signals); # Recommended, not necessary
 use HTTP::WebTest;
 $webtest = HTTP::WebTest->new();
 $webtest->web_test('my_web_tests.wt', \$num_fail, \$num_succeed);

 The web_test() method has an option to test a local file by
 starting Apache on a private port, copying the file to a temporary
 htdocs directory and fetching the page from Apache.  If you are
 testing with multiple parameter files, you can avoid restarting
 Apache each time by calling new() only once and recycling the object:

 use sigtrap qw(die normal-signals); # Recommended, not necessary
 use HTTP::WebTest;
 $webtest = HTTP::WebTest->new(); 
 foreach $file (@ARGV) {
    $webtest->web_test($file, \$num_fail, \$num_succeed);
 }

 TO ENABLE DEBUGGING MESSAGES (OUTPUT TO STDOUT):

 If you are calling the web_test method, use the debug parameter.
 If you are calling the run_web_test method, do this:

 use HTTP::WebTest qw(run_web_test);
 $HTTP::WebTest::Debug = 1; # Diagnostic messages
 $HTTP::WebTest::Debug = 2; # Messages and preserve temp Apache dir
 run_web_test(\@web_tests, \$num_fail, \$num_succeed)

DESCRIPTION

This module runs tests on remote URLs or local web files containing Perl/JSP/HTML/JavaScript/etc. and generates a detailed test report.

The test specifications can be read from a parameter file or input as method arguments. If you are testing a local file, Apache is started on a private/dynamic port with a configuration file in a temporary directory. The module displays the test results on the terminal by default or directs them to a file. The module optionally e-mails the test results.

Each URL/web file is tested by fetching it from the web server using a local instance of an HTTP user agent. The basic test is simply whether or not the fetch was successful. You may also test using literal strings or regular expressions that are either required to exist or forbidden to exist in the fetched page. You may also specify tests for the minimum and maximum number of bytes in the returned page. You may also specify tests for the minimum and maximum web server response time.

If you are testing a local file, the module checks the error log in the temporary directory before and after the file is fetched from Apache. If messages are written to the error log during the fetch, the module flags this as an error and writes the messages to the output test report.

The wt script is provided for running HTTP::WebTest from the command line.

Data flow for HTTP::WebTest using a remote URL:

          --------------              -------------
          |            |              |           |
          | Input      |------------->|  WebTest  |
          | parameters |              |           |
          |            |              -------------
          --------------                  |   ^
                                          |   |
                                          V   |
          -------------               ------------
          |           |    request    |          |
          | Remote    |<--------------|   HTTP   |
          | webserver |-------------->|   user   |
          |           |    response   |   agent  |
          -------------               |          |
                                      ------------
                                      

Data flow diagram for HTTP::WebTest using a local web file:

          --------------           ---------------------
          |            |           |                   |
          | Input      |           |  Web page code    |
          | parameters |           |  (Perl/HTML/etc.) |
          |            |           |                   |
          --------------           ---------------------
                |                            |
                |  ---------------------------
                |  |
                V  V              ------------------------
          -------------           |                      |
          |           |---------->| Temporary Apache     |
          |  WebTest  |           | directories (htdocs, |
          |           |<----------| conf, logs)          |
          -------------           |                      |
              |  ^                ------------------------
              |  |                        |    ^
              V  |                        V    |
          ------------             ----------------------
          |          |   request   |                    |
          |   HTTP   |------------>| Temporary local    |
          |   user   |             | instance of Apache |
          |   agent  |<------------|                    |
          |          |   response  ----------------------
          ------------

METHODS

 new($proto) 
 new()
    Create new HTTP::WebTest object.  $proto (optional) is 
    either a reference or a class (package) name.  Returns a new 
    HTTP::WebTest object.
 web_test($param_file, \$num_fail, \$num_succeed)
 web_test($param_file, \$num_fail, \$num_succeed, $save_output)
    Reads and validates input parameters, fetches one or more
    web pages, runs tests, writes results to standard output
    or a file.  Optionally e-mails test results if error found.
    If the parameters specify a test of a local web source file,
    starts Apache on a private/dynamic port and copies the file to
    a temporary htdocs directory.

    Input arguments:
    $param_file - A relative or absolute pathname to a parameter 
       file.  See the FILES section for a description of the file.  
    $save_output (optional) - Option to save program output to a file.
       The routine constructs the file name by taking the value of 
       $param_file, removing the file extension if it exists and
       appending ".out".  Error messages are always sent to standard
       error.
       = no       -> Send output to standard output
       = yes      -> Save output to file, overwrite existing file
       = preserve -> Save output to file unless file exists

    Output arguments:
    \$num_fail - The number of tests that failed.
    \$num_succeed - The number of tests that succeeded.

    Return values:
    1 -> All tests ran successfully with no failures.
    0 -> Syntax error in input parameter file, system runtime error or
         one or more of the tests failed. 
 run_web_test(\@web_tests, \$num_fail, \$num_succeed, \%test_options)
 run_web_test(\@web_tests, \$num_fail, \$num_succeed)
    Validates input parameters, fetches one or more urls, runs
    tests, writes results to standard output or a file.  Optionally
    e-mails test results.

    Input/output arguments:
    \@web_tests - An arrayref of hashrefs.  Each hashref defines 
       tests for one URL.  
 
       Some of the hash keys can override the value of the
       corresponding $test_options keys.  For example, if the
       max_bytes hash key is defined in $test_options and you want
       to disable the max_bytes test a particular URL, set the
       web_tests max_bytes hash key to a value of undef or ''.

       If one of the keys below does not exist in one of the
       web_test hashes on input, the module checks the value for
       the corresponding key in the $test_options hash.  If that
       value is defined, then the value from $test_options is used
       during the tests for that web_test hash.

       All input values and keys are preserved on output, except
       the num_fail and num_succeed keys.

       web_tests keys:
       accept_cookies - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       auth - Overrides the value of the corresponding test_options
          key FOR THIS URL ONLY.
       cookies - Arrayref of arrayrefs containing cookies to pass
          with the HTTP request.  See RFC 2965 for details
          (ftp.isi.edu/in-notes/rfc2965.txt).  Each array must have
          at least 5 elements; if the number of elements is over 10
          it must have an even number of elements.  Each array has
          the form ( version name value path domain port path_spec
          secure maxage discard name1 value1 name2 value2 ... ),
          with the following definitions.  (REQUIRED elements are
          marked with an ASTERISK; elements that are not required
          can be specified using the undef value or ''.)

         *version: Version number of cookie spec to use, usually 0.
         *name: Name of cookie. Cannot begin with a $ character.
         *value: Value of cookie.
         *path: URL path name for which this cookie applies. Must 
             begin with a / character.  See also path_spec.
         *domain: Domain for which cookie is valid. Should begin 
             with a period.  Must either contain two periods or be
             equal to '.local'.
          port: List of allowed port numbers that the cookie may be 
             returned to.  If not specified, cookie can be returned
             to any port.  Must be specified using the format N or
             N,N ..., where N is one or more digits.
          path_spec: Ignored if version is less than 1.  Option to
             ignore the value of path.  Default value is 0.
             = 1 -> Use the value of path.
             = 0 -> Ignore the specified value of path.
          secure: Option to require secure protocols for cookie 
             transmission.  Default value is 0.
             = 1 -> Use only secure protocols to transmit cookie.
             = 0 -> Secure protocols not required for transmission.
          maxage: Number of seconds until cookie expires.
          discard: Option to discard cookie when program exits.
             Default 0.  (The cookie will be discarded regardless 
             of the value of this element.)
             = 1 -> Discard cookie.
             = 0 -> Don't discard cookie.
          name/value: Zero, one or several name/value pairs may be
             specified.  The name parameters are words such as
             Comment or CommentURL and the value parameters are
             strings that may contain embedded blanks.

       ignore_case - Option to do case-insensitive string matching
                     for text_forbid and text_require arguments.
                      = 'yes'   -> Ignore case while matching strings.
                      Otherwise -> Do case-sensitive string matching.
       ignore_error_log - Option to ignore messages in Apache error
          log.  (See the error_log key in test_options argument.) 
          = 'yes' -> Do not check for messages in the error log
                     FOR THIS URL ONLY.
          Otherwise, check messages if error_log key in test_options
          argument is defined.
       max_bytes - Overrides the value of the corresponding 
          $test_options key FOR THIS URL ONLY.
       min_bytes - Overrides the value of the corresponding 
          $test_options key FOR THIS URL ONLY.
       max_rtime - Overrides the value of the corresponding 
          $test_options key FOR THIS URL ONLY.
       min_rtime - Overrides the value of the corresponding 
          $test_options key FOR THIS URL ONLY.
       method - The type of the HTTP request, either 'get' or 'post'.
          If undefined or key does not exist, 'get' is used.
       num_fail (Output) - The number of tests that failed.  If the 
          fetch of the URL fails, one error is counted and the tests 
          for that URL are skipped.  
       num_succeed (Output) - The number of tests that succeeded.  The
          successful fetch of the URL is not counted, only successful
          tests.  If the error_log argument is specified, the absence
          of errors in the logs is counted as a successful test.
       params - A hashref or arrayref containing name/value pairs to
          be passed as parameters to the URL.  (This element is
          used to test pages that process input from forms.) Unless
          the method key is set to post, these pairs are URI-escaped
          and appended to the requested URL.  (See 
          http://www.ietf.org/rfc/rfc2396.txt for URI escapes.)
       pauth - Overrides the value of the corresponding test_options
          key FOR THIS URL ONLY.    
       proxies - A hashref or arrayref containing service name 
          / proxy URL pairs that specify proxy servers to use for
          requests.  For example:
          proxies = ( http => http://http_proxy.mycompany.com
                      ftp  => http://ftp_proxy.mycompany.com )
       regex_forbid - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       regex_require - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       send_cookies - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       show_html - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       test_name - Name associated with this url in the test report
          and error messages.
       text_forbid - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       text_require - Overrides the value of the corresponding
          $test_options key FOR THIS URL ONLY.
       url - The URL to fetch and test.  This key is REQUIRED. If
          it begins with 'www.', 'http://' is prefixed.

    Output arguments:
    \$num_fail - Total number of tests that failed.
    \$num_succeed - Total number of tests that succeeded.

    Input arguments:
    \%test_options - (Optional) A hashref defining testing options.
       All, some or none of the keys may be defined.  Some of these
       options can also be specified in the web_tests argument.  The
       allowed hash keys are: 

       accept_cookies - Option to accept cookies from the web server.
          = 'no'     -> Do not accept cookies.
          Otherwise  -> Accept cookies.
       auth - Arrayref containing a userid and password to be used
          for web page access authorization.
       error_log - The pathname of a local web server error log.
          The module counts the number of lines in the error
          log before and after each request.  If the number of
          lines increases, an error is counted and the additional
          lines are listed in the report.  (This argument should
          be used only when the local web server is running in
          single-process mode.  Otherwise, requests generated by
          other processes/users may add lines to the error log that
          are not related to the requests generated by this module.)
       fh_out - A filehandle for a file that the test report will be
          written to instead of the terminal.
       mail_addresses - Arrayref containing one or more e-mail
          addresses.
       mail - Option to e-mail output to one or more addresses.
          = 'all'     -> Send e-mail containing test results.
          = 'errors'  -> Send e-mail only if one or more tests fails.
          Otherwise   -> Do not send e-mail.
       mail_server - Fully-qualified name of of the mail server 
          (e.g., mailhost.mycompany.com). 
       max_bytes - Maximum number of bytes expected in returned
          pages.  If this value is exceeded, an error message is
          displayed.
       min_bytes - Minimum number of bytes expected in returned
          pages.  If the number of returned bytes is less than this
          value, an error message is displayed.
       max_rtime - Maximum web server response time (seconds) expected.
          If this value is exceeded, an error message is displayed.
       min_rtime - Minimum web server response time (seconds) expected.
          If this value is exceeded, an error message is displayed.
       pauth - Arrayref containing a userid and password to be used
          for proxy access authorization.  

       (The regex_forbid and regex_require parameters contain
       one or more Perl regular expressions.  These are compared
       to the fetched page contents as the right hand side of a
       "=~" operator.  If you want to search for a literal string,
       use the text_forbid and text_require arguments.  For more
       information, type "man perlre" or see Programming Perl,
       3rd edition, Chapter 5.)

       regex_forbid - Arrayref of regular expressions that are
          forbidden to exist in the returned page.  
       regex_require - Arrayref of regular expressions that are
          required to exist in the returned page.  
       send_cookies - Option to send cookies to web server.  This
          applies to cookies received from the web server or cookies
          specified using the cookies key of the web_test argument. 
          = 'no'     -> Do not send cookies to the web server.
          Otherwise  -> Send cookies to the web server.
       show_cookies - Option to display any cookies sent or received.
          = 'yes'    -> Display cookies in report.
          Otherwise  -> Do not display.
       show_html - Option to include the returned web page in the 
          test report.
          = 'yes'    -> Display the web page in the test report.
          Otherwise  -> Do not display the web page.
       terse - Option to display shorter test report.
          = 'summary'     -> Only a one-line summary for each URL.
          = 'failed_only' -> Only tests that failed and the summary. 
          Otherwise       -> Show all tests and the summary.
       text_forbid - Arrayref of text strings that are forbidden to
          exist in the returned page.  
       text_require - Arrayref of text strings that are required to
          exist in the returned page.  

    Return values:
    1 -> All tests succeeded.
    0 -> Error in input parameters, system runtime error, or one
         or more of the tests failed.
 DESTROY() 
    Kills Apache (if started), deletes temporary directories (if 
    created).  Returns 1 if clean up tasks were successful, 0 
    otherwise.

ENVIRONMENT VARIABLES

 None.

FILES

 The web_test() method requires (1) one or more input parameter
 files, and (2) if the file_path parameter is specified, a directory
 tree that contains the subdirectories and files described in the
 APACHE DIRECTORY AND FILES section below.

 The run_web_test method does not require a parameter file.
 

 PARAMETER FILE
 
 If the input parameters are specified in a text file, you must pass
 the name of the file as an argument to the web_test() method.
 If you are running dozens of tests, you may want to divide them
 into several parameter files.  This will organize the tests
 and reduce the size of the output and e-mail messages.  However,
 cookies passed to or received from the web server(s) are not shared
 between tests in different parameter files.

 Parameters - Overview
 =====================
 There are over 30 parameters, but the only required parameters
 are test_name, end_test, and either url or file_path.  Also, if
 you specify the file_path parameter, you will have to specify the
 apache_exec parameter.

 Each parameter is either a test block parameter, a global parameter,
 or both.  TEST BLOCK PARAMETERS are parameters specified between
 a test_name parameter and an end_test directive.  Test block
 parameters apply only to the tests for the file_path or url
 specified in that test block.  You can specify one or many test
 blocks in a parameter file.  GLOBAL PARAMETERS are parameters
 specified outside of a test block.  Global parameters apply to
 every test block in the parameter file.

 You can specify certain parameters as BOTH GLOBAL PARAMETERS AND TEST
 BLOCK PARAMETERS.  These include the parameters accept_cookies, auth,
 ignore_case, ignore_error_log, max_bytes, min_bytes, max_rtime,
 min_rtime, pauth, regex_forbid, regex_require, send_cookies,
 text_forbid and text_require.  If you specify one of these within
 a test block, that value is used instead of the value of the
 corresponding global parameter for that test block only.  If you
 specify some, but not all, of these parameters in a test block,
 the global parameter values are used for the unspecified test block
 parameters.

 Parameters - Short descriptions
 ===============================
 Parameters that are always required are marked with an asterisk.  
 Parameters that are usually required are marked with a plus sign.

  accept_cookies: Option to accept cookies sent by web server.
  apache_dir: Name of directory containing Apache files.
 +apache_exec: Path name of Apache executable.
  apache_loglevel: Apache logging level. 
  apache_max_wait: Maximum seconds to wait for Apache to start.
  apache_options: Additional Apache command line options.
  auth: Two-element list containing userid and password to be passed
     to web server for page access authorization.
  cookie: List specifying a cookie to send to the web server.
  debug: Option to output verbose diagnostic messages.
 *end_test: Signifies the end of a test block.
 +file_path: Two-element list containing name of web file to test and
     subdirectory path relative to the htdocs directory to copy it to.
  ignore_case: Option to do case-insensitive matching with text_forbid
     and text_require parameters.
  ignore_error_log: Option to ignore errors found in Apache error log.
  include_file_path: List containing files to copy and subdirectory 
     path relative to the Apache ServerRoot directory to copy them to.
  mail: Option to send e-mail containing results of tests.
  mail_addresses: List of e-mail addresses to send reports to.
  mail_server: Name of mail server.
  method: HTTP request method; either get or post.
  max_bytes: Maximum number of bytes expected in returned page.
  min_bytes: Minimum number of bytes expected in returned page.
  max_rtime: Maximum web server response time (seconds) expected.
  min_rtime: Minimum web server response time (seconds) expected.
  pauth: Two-element list containing userid and password to be passed
     to web server for proxy authorization.  
  params: List of parameter name/value pairs to be passed to server.
  proxies: List of service name / proxy URL pairs to use for requests.
  regex_forbid: List of strings/regexs that must NOT occur in page.
  regex_require: List of strings/regexs that MUST occur in page.
  save_output: Option to redirect the program output to a file.
  send_cookies: Option to send cookies to the web server.
  show_cookies: Option to list cookies sent or received.
  show_html: Option to display the HTML source with the output.
 *test_name: Test name, usually just the URL.  Truncated at 56 chars.
  text_forbid: List of strings that must NOT occur in page.
  text_require: List of strings that MUST occur in page.
 +url: URL to test.
  terse: Option to display shorter test report.

 Parameter file format
 =====================
 The program ignores:
    * lines consisting of nothing but white space (blanks or tabs)
    * lines beginning with a number sign ("#")
    * lines beginning with white space (blanks or tabs) followed by
      a number sign

 The order of the parameters in the parameter file is arbitrary, 
 with the following exceptions:
    * Test block parameters MUST occur between a test_name parameter
      and an end_test directive.
    * Global parameters must NOT occur between a test_name parameter
      and an end_test directive.  (This requirement does not apply to
      parameters that are both global and test block parameters.)
    * The parameter save_output, if specified, should be the first
      parameter in the file.  (This is not required.)

 Parameters are either scalar (single-valued) or lists (single or 
 multi-valued).  

 You can specify scalar parameters using forms such as: 
 name = value 
 name =
        value
 name = 'value' 

 You can specify list parameters using forms such as:
 name = ( first value  
          second value )
 name = ( first value => second value
          third value => fourth value
        )
 name = ( first value => second value )
 name = ( 
          'first value'
          'second value' )
 name = ( 
          first value
          second value 
          third value => 'fourth value'
        )
 name = 
    ( first value
      'second value' )
 name = ( 
          'first value'
          'second value' 
        )
 (The equals sign must be followed by a space, tab or newline; all 
 other spaces are optional.)

 PARAMETER VALUES BEGINNING AND ENDING WITH A SINGLE QUOTE WILL HAVE
 THE SINGLE QUOTES REMOVED.  For example, 'foobar' is parsed as a
 value of foobar and ''foobar'' is parsed as a value of 'foobar'.  
 To specify a null (placeholder) value, use ''.

 You MUST enclose the parameter value in single quotes if you want 
 to specify:
    * A value beginning with a left parenthesis
    * A value ending with a right parenthesis
    * A value beginning with leading white space (blanks or tabs)
    * A value ending with trailing white space (blanks or tabs)
    * A value beginning and ending with single quotes

 Examples of parameter files
 ===========================
 The parameters below specify tests of a local file and a remote
 URL.  The tests specified by the text_forbid parameter apply to 
 both the "RayCosoft home page" and the "Yahoo home page" tests.  
 Hence, if either returned page contains one of the case-
 insensitive strings in text_forbid, the test fails.  If any test 
 fails or the fetch of the URL fails,, an e-mail will be sent to 
 tester@unixscripts.com.

 apache_exec = /usr/sbin/apache 
 ignore_case = yes
 mail = errors
 mail_addresses = ( tester@unixscripts.com )
 mail_server = mailhost.unixscripts.com
 text_forbid = ( Premature end of script headers
                 an error occurred while processing this directive
               )
 
 test_name = 'RayCosoft home page (static)' 
    file_path = ( raycosoft_home.html => . )
    text_require = (     
       <a href="/dept/peopledev/new_employee/"><font color="#0033cc">
       <a href="https://www.raycosoft.com/"><font color=
                   )
 end_test
 
 test_name = Yahoo home page
    url = www.yahoo.com
    text_require = ( <a href=r/qt>Quotations</a>...<br> )
    min_bytes = 13000
    max_bytes = 99000
    min_rtime = 0.010
    max_rtime = 30.0
 end_test

 The parameters below specify a test of a local file containing Perl
 code using the Apache::ASP module.  The includes.htm file requires
 five include files and two Perl modules, which are copied using
 the include_file_path parameter.

 apache_exec = /usr/sbin/apache
 ignore_case = yes
 include_file_path = ( footer.inc => htdocs/apps/myapp/inc 
                       header.inc => htdocs/apps/myapp/inc 
                       head.inc   => htdocs/apps/myapp/inc 
                       go.script  => htdocs/shared/includes
                       go.include => htdocs/shared/includes
                       ../utils/DBconn.pm  => lib/perl/utils
                       ../utils/Window.pm  => lib/perl/utils
                     )

 test_name = includes.htm
     file_path = ( includes.htm => apps/myapp )
     min_bytes = 33000
     max_bytes = 35000
     text_require = ( input type=hidden name=control value= )
     text_forbid  = ( Premature end of script headers
                      an error occurred while processing this directive
                    )
 end_test
 
 Parameters - Detailed descriptions
 ==================================
 PARAMETER: accept_cookies TYPE: global and/or test block parameter  
 DEFAULT: yes  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to accept and save cookies sent by the web
 server.  These cookies exist only while the program is executing
 and do not affect subsequent runs.  These cookies do not affect your
 browser or any software other than the test program.  These cookies
 are only accessible to other tests in the same parameter file.

 You can specify this parameter globally or within a test block.
 If you specify it as both a global and a test block parameter, the
 value in the test block applies only to that test block.  See also
 the send_cookies parameter.

 PARAMETER: apache_dir  TYPE: global parameter
 DEFAULT: /usr/local/etc/http-webtest  
 DESCRIPTION: Absolute or relative path name of directory containing
 Apache files.  See the APACHE DIRECTORY AND FILES section below.
 This parameter is ignored unless the file_path parameter is specified.

 PARAMETER: apache_exec  TYPE: global parameter  
 NO DEFAULT.  REQUIRED if the file_path parameter is specified.
 DESCRIPTION: Path name of Apache executable.  This command must be
 in your $PATH or the path name must start with '/'.  This parameter
 is ignored unless the file_path parameter is specified.

 PARAMETER: apache_loglevel  TYPE: global parameter  
 DEFAULT: warn  OPTIONAL PARAMETER.
 ALLOWED VALUES: debug info notice warn error crit alert emerg 
 DESCRIPTION: Apache logging level.  If you use a level less than
 warn (i.e., debug, info, or notice), the program may generate
 irrelevant errors.  This parameter is ignored unless the file_path
 parameter is specified.  See also the ignore_error_log parameter.

 PARAMETER: apache_max_wait  TYPE: global parameter
 DEFAULT: 64  ALLOWED VALUES: Any integer > 9 and < 601  OPTIONAL 
 PARAMETER.
 DESCRIPTION: Maximum number of seconds to wait for Apache to start.
 The program starts Apache, waits 4 seconds and fetches a test page.
 If this fails, it doubles the wait interval, restarts Apache,
 waits and fetches a test page.  This process repeats until the
 test page is fetched successfully or the wait interval becomes
 greater than apache_max_wait.  This parameter is ignored unless
 the file_path parameter is specified.

 PARAMETER: apache_options  TYPE: global parameter 
 DEFAULT: -X  ALLOWED VALUES: See Apache man page.  OPTIONAL PARAMETER.
 DESCRIPTION: Additional Apache command line options.  Many of the
 options cause Apache to exit immediately after starting, so the
 web page tests will not run.  This parameter is ignored unless
 the file_path parameter is specified.

 PARAMETER: auth  TYPE: global and/or test block parameter
 No default.  ALLOWED VALUES: A one or two element list.  OPTIONAL
 PARAMETER.
 DESCRIPTION: Userid and password, in that order, to be passed to the
 web server if needed for authorization.  If you specify only one
 element, it is used as the userid and the program will prompt you
 interactively for the password.  If you specify values of 'prompt'
 and 'userid_password' in that order, the program will prompt you for
 both the userid and password.  If you specify values of 'prompt'
 and 'password' in that order, the program will prompt you for
 the password and use the userid of the user running the program.
 (This last option is probably not what you want, unless your Unix
 userid and web page userid are the same.)

 You can specify this parameter globally or within a test block.
 If you specify it as both a global and a test block parameter,
 the value in the test block applies only to that test block.

 PARAMETER: cookie  TYPE: test block parameter  
 NO DEFAULT.  ALLOWED VALUES: A list with at least 5 elements.  If
 there are more than 10 elements, there must be an even number of 
 elements.  The cookie parameter is ignored if the send_cookies 
 parameter is set to no.  OPTIONAL PARAMETER.  Multiple cookie 
 parameters may be specified.
 DESCRIPTION: List that specifies a cookie to send to the web server.
 See RFC 2965 for details (ftp.isi.edu/in-notes/rfc2965.txt).
 You may specify multiple cookies within each test block by
 specifying multiple instances of the cookie parameter.  The cookie
 parameter has the form:

 ( version 
   name 
   value 
   path 
   domain 
   port 
   path_spec 
   secure 
   maxage 
   discard 
   name1
   value1
   name2
   value2
   ...
 )

 Any element not marked below as REQUIRED may be defaulted by 
 specifying a null value of ''  

 version: Version number of cookie spec to use, usually 0. (REQUIRED)
 name: Name of cookie. (REQUIRED)  Cannot begin with a $ character.
 value: Value of cookie. (REQUIRED)
 path: URL path name for which this cookie applies. (REQUIRED)  Must 
    begin with a / character.  See also path_spec. 
 domain: Domain for which cookie is valid. (REQUIRED)  Should begin 
    with a period.  Must either contain two periods or be equal
    to .local
 port: List of allowed port numbers that the cookie may be returned 
    to.  If not specified, cookie can be returned to any port.  
    Must be specified using the format N or N,N ..., where N is one 
    or more digits. 
 path_spec: Ignored if version is less than 1.  Option to ignore the
    value of path.  Default value is 0.
    = 1 -> Use the value of path.
    = 0 -> Ignore the specified value of path.
 secure: Option to require secure protocols for cookie transmission.
    Default value is 0.
    = 1 -> Use only secure protocols to transmit this cookie. 
    = 0 -> Secure protocols are not required for transmission.
 maxage: Number of seconds until cookie expires.
 discard: Option to discard cookie when the program finishes.  
    Default 0.  (The cookie will be discarded regardless of the value
    of this element.)
    = 1 -> Discard cookie when the program finishes.
    = 0 -> Don't discard cookie.
 name/value: Zero, one or several name/value pairs may be specified.
    The name parameters are words such as Comment or 
    CommentURL and the value parameters are strings that 
    may contain embedded blanks. 

 See RFC 2965 for details (ftp.isi.edu/in-notes/rfc2965.txt).

 An example cookie would look like:
 ( 0 
   WebTest cookie #1 
   expires&2592000&type&consumer 
   /
   .unixscripts.com  
   ''
   0 
   0 
   200 
   1 
 )
 
 PARAMETER: debug  TYPE: global parameter
 DEFAULT: no  ALLOWED VALUES: no yes preserve  OPTIONAL PARAMETER.
 DESCRIPTION: This parameter is primarily for use by programmers
 modifying and testing the program code.  The "yes" value makes
 the program display verbose diagnostic messages.  (If you want
 diagnostics on the parameter processing, this parameter should
 preceed all other parameters.)  The "preserve" value makes the
 program display verbose diagnostic messages and prevents the
 program from deleting the temporary Apache directory, which is 
 named "/tmp/webtest_x_y", where x and y are arbitrary positive
 integers. 

 DIRECTIVE: end_test  TYPE: test block directive
 NO VALUE (i.e. specify end_test with no equals sign or value).
 There MUST be one end_test directive for each test_name parameter.
 Directive is REQUIRED.
 DESCRIPTION: Signifies the end of a test block.

 PARAMETER: file_path  TYPE: test block parameter 
 NO DEFAULT.  ALLOWED VALUES: Second list element cannot begin with
 '../' or contain '/../'.  You MUST specify file_path or url, but
 not both, in each test block.
 DESCRIPTION: Two-element list.  First element is the file to test,
 either an absolute or a relative pathname.  Second element is the
 subdirectory pathname, relative to the Apache htdocs directory, to
 copy the file to.  The copied file will have the same basename as
 the first element and the relative pathname of the second element.
 To copy the file directly to the htdocs directory, use a pathname of
 . or './.'.  

 For example:
 file_path = ( /home/tester/testfile.html => mydepartment/myproject )
 will copy the file to ./htdocs/mydepartment/myproject/testfile.html.

 PARAMETER: ignore_case  TYPE: global and/or test block parameter
 DEFAULT: no  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to do case-insensitive matching for text_forbid
 and text_require parameters.  This does not affect the regex_forbid
 or regex_require parameters.

 PARAMETER: ignore_error_log  TYPE: global and/or test block 
 parameter  DEFAULT: no  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to ignore any errors found in the Apache error
 log.  The default behavior is to flag an error if the fetch causes
 any errors to be added to the error log and echo the errors to
 the program output. This parameter is ignored unless the file_path
 parameter is specified.  See also the apache_loglevel parameter.
 See also the Restrictions / Bugs section.

 PARAMETER: include_file_path  TYPE: global parameter
 NO DEFAULT.  ALLOWED VALUES: Even-numbered list elements cannot 
 begin with '../' or contain '/../'.  OPTIONAL PARAMETER.  You can
 specify more than one instance of this paramter.
 DESCRIPTION: List with an even number of elements.  Odd-numbered
 elements are files to copy to the the temporary Apache directory
 before running the tests.  These files can be specified using
 either an absolute or a relative pathname.  Even-numbered elements
 are the subdirectory pathname, relative to the Apache ServerRoot
 directory, to copy the corresponding file to.  The copied file
 will have the same basename as the odd-numbered element and the
 relative pathname of the corresponding even-numbered element.
 To copy the file directly to the ServerRoot directory, use a
 pathname of . or './.'.

 For example:
 include_file_path = (/home/tester/inc/header.inc => htdocs/includes)
 will copy the file to htdocs/includes/header.inc.

 This parameter is also useful for adding Perl modules that are
 needed by the web page specified by the file_path parameter.  For
 example:
 include_file_path = ( ../apps/myapp/DBconn.pm => lib/perl/apps ) 
 will copy the Perl module DBconn.pm to a directory that is in the 
 Perl @INC array.

 An alternative to using the include_file_path parameter is to
 manually copy the files into the desired subdirectory in the
 directory specified by the apache_dir parameter.

 PARAMETER: mail  TYPE: global parameter  
 DEFAULT: no  ALLOWED VALUES: no errors all  OPTIONAL PARAMETER.
 DESCRIPTION: Option to e-mail reports to the addresses in
 the mail_addresses parameter using the server specified by the
 mail_server parameter.  If set to no, no e-mail is sent.  If set to
 errors and one or more of the tests in the parameter file fails,
 an e-mail is sent that contains the results of all tests in the
 parameter file.  If set to all, an e-mail is sent containing the
 results of all tests in the parameter file, regardless of success
 or failure.

 PARAMETER: mail_addresses  TYPE: global parameter  
 NO DEFAULT.  REQUIRED unless mail = no.
 DESCRIPTION: List of e-mail addresses to send mail to.  This
 parameter has two uses.  If the mail parameter is set to "errors"
 or "all", the program sends mail containing the program output
 to these addresses.  If the Apache executable specified by the
 apache_exec parameter has the Apache::ASP Perl module configured,
 server errors generated while compiling or running Apache::ASP
 scripts will be e-mailed to the first address in the mail_addresses
 list.

 PARAMETER: mail_server  TYPE: global parameter  
 NO DEFAULT.  REQUIRED unless mail = no.
 DESCRIPTION: Name of mail server.  

 PARAMETER: method  TYPE: test block parameter
 DEFAULT: get  ALLOWED VALUES: get post  OPTIONAL PARAMETER.
 DESCRIPTION: HTTP method for the request(s).  See RFC 2616 
 (HTTP/1.1 protocol).

 PARAMETER: max_bytes  TYPE: global and/or test block parameter
 NO DEFAULT   ALLOWED VALUES: Any integer greater that zero and
 greater than min_bytes (if min_bytes is specified).  OPTIONAL
 PARAMETER.
 DESCRIPTION: Maximum number of bytes expected in returned page.  
 If this value is exceeded, an error message is displayed.

 PARAMETER: min_bytes  TYPE: global and/or test block parameter
 NO DEFAULT   ALLOWED VALUES: Any integer less than max_bytes (if 
 max_bytes is specified).  OPTIONAL PARAMETER.
 DESCRIPTION: Minimum number of bytes expected in returned page.  
 If the number of returned bytes is less than this value, an error 
 message is displayed.

 PARAMETER: max_rtime  TYPE: global and/or test block parameter
 NO DEFAULT   ALLOWED VALUES: Any number greater that zero and
 greater than min_rtime (if min_rtime is specified).  OPTIONAL
 PARAMETER.
 DESCRIPTION: Maximum web server response time expected.  If this 
 value is exceeded, an error message is displayed.

 PARAMETER: min_rtime  TYPE: global and/or test block parameter
 NO DEFAULT   ALLOWED VALUES: Any number less than max_rtime (if 
 max_rtime is specified).  OPTIONAL PARAMETER.
 DESCRIPTION: Minimum web server response time expected.  If this 
 value is exceeded, an error message is displayed.

 PARAMETER: params  TYPE: test block parameter
 NO DEFAULT.  ALLOWED VALUES: A list with an even number of 
 elements.  OPTIONAL PARAMETER.
 DESCRIPTION: A set of parameter name/value pairs to be passed
 with the request.  (This parameter is used to test pages that
 process forms.)  Unless the method parameter is set to 'post',
 these pairs are URI-escaped and appended to the requested URL.
 For example,
 url = http://www.hotmail.com/cgi-bin/hmhome
 params = ( curmbox 
            F001 A005 
            from
            HotMail ) 
 generates the request:
 http://www.hotmail.com/cgi-bin/hmhome?curmbox=F001%20A005&from=HotMail
 The names and values will be URI-escaped as defined by RFC 2396.
 (See http://www.ietf.org/rfc/rfc2396.txt.) 

 PARAMETER: pauth  TYPE: global and/or test block parameter
 No default.  ALLOWED VALUES: A one or two element list.  OPTIONAL
 PARAMETER.
 DESCRIPTION: Userid and password, in that order, to be passed to
 the proxy if needed for authorization.  If you specify only one
 element, it is used as the userid and the program will prompt you
 interactively for the password.  If you specify values of 'prompt'
 and 'userid_password' in that order, the program will prompt you for
 both the userid and password.  If you specify values of 'prompt'
 and 'password' in that order, the program will prompt you for
 the password and use the userid of the user running the program.
 (This last option is probably not what you want, unless your Unix
 userid and web page userid are the same.)

 PARAMETER: proxies  TYPE: global parameter
 NO DEFAULT.  ALLOWED VALUES: A list with an even number of 
 elements.  OPTIONAL PARAMETER.
 DESCRIPTION: A set of service name / proxy URL pairs that specify
 proxy servers to use for requests.  For example: 
 proxies = ( http => http://http_proxy.mycompany.com
             ftp  => http://ftp_proxy.mycompany.com )

 -------------------------------------------------------------------

 The regex_forbid and regex_require parameters contain one or more
 Perl regular expressions.  The regex_forbid and regex_require
 parameter values are compared to the fetched page contents as the
 right hand side of a "=~" operator.  If you want to search for a
 literal string, use the text_forbid and text_require parameters.
 For more information, type "man perlre" or see Programming Perl,
 3rd edition, Chapter 5.

 You can specify these parameters globally or within a test block.
 If you specify one as both a global and a test block parameter, the
 value in the test block applies only to that test block.  

 PARAMETER: regex_forbid  TYPE: global and/or test block parameter  
 NO DEFAULT.  OPTIONAL PARAMETER.  
 DESCRIPTION: List of one or more regular expressions that must
 NOT exist on the web page.  See also the text_forbid parameter.

 PARAMETER: regex_require  TYPE: global and/or test block parameter  
 NO DEFAULT.  OPTIONAL PARAMETER.
 DESCRIPTION: List of one or more regular expressions that MUST
 exist on the web page.  See also the text_require parameter.

 -------------------------------------------------------------------

 PARAMETER: save_output  TYPE: global parameter
 DEFAULT: no  ALLOWED VALUES: no yes preserve  OPTIONAL PARAMETER.
 DESCRIPTION: Option to redirect the program output to a file.
 (Error messages still go to the terminal.)  The program constructs
 the file name by taking the name of this parameter file, removing
 the file extension if it exists and appending ".out".  If there is
 an existing file with that name, the program overwrites the file if
 save_output is set to 'yes'.  If save_output is set to 'preserve'
 and the file already exists, output is sent to the terminal.
 This parameter should precede all other parameters in the parameter
 file. (This order is not required.)

 PARAMETER: send_cookies TYPE: global and/or test block parameter  
 DEFAULT: yes  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to send cookies to the web server.  This applies
 to cookies passed by the web server(s) during the test session and
 to cookies created using the cookies parameter.  This does NOT
 give the web server(s) access to cookies created with a browser
 or any user agent software other than this program.  The cookies
 created while this program is running are only accessible to other
 tests in the same parameter file.

 You can specify this parameter globally or within a test block.
 If you specify it as both a global and a test block parameter, the
 value in the test block applies only to that test block.  See also
 the accept_cookies parameter.

 PARAMETER: show_cookies TYPE: global parameter  
 DEFAULT: no  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to list cookies sent to or received from the web
 server.  Each cookie will be preceded with the string "Set-Cookie3:"
 and the cookie elements will be separated by semicolons.

 PARAMETER: show_html  TYPE: global parameter  
 DEFAULT: no  ALLOWED VALUES: no yes  OPTIONAL PARAMETER.
 DESCRIPTION: Option to display the HTML source with the output.
 You can specify this parameter globally or within a test block.
 If you specify it as both a global and a test block parameter,
 the value in the test block applies only to that test block.
 
 If, and only if, you specify the file_path parameter, the program
 starts a local instance of Apache, copies the file to its htdocs
 directory, fetches the file from Apache and runs the specified
 tests.

 PARAMETER: terse  TYPE: global parameter  
 DEFAULT: no  ALLOWED VALUES: no failed_only summary  OPTIONAL
 PARAMETER.
 DESCRIPTION: Option to display short test report.  If you set
 it to 'summary', the program displays only a one-line summary of
 the tests for each URL/file.  If you set terse to 'failed_only',
 the program only displays the results of tests that failed and
 the summary.  If you set terse to 'no', the program displays all
 the test results and the summary.

 PARAMETER: test_name  TYPE: test block parameter  
 NO DEFAULT.  Parameter is REQUIRED.
 DESCRIPTION: Name of this test, usually just the URL.  Only the
 first 56 characters are used.  This MUST be the first parameter
 in the block for each test.  You may specify multiple test blocks
 within a parameter file.  There MUST be one end_test directive
 for each test_name parameter.

 PARAMETER: text_forbid  TYPE: global and/or test block parameter  
 NO DEFAULT.  OPTIONAL PARAMETER.  
 DESCRIPTION: List of one or more text strings that must NOT exist
 on the web page.  See also the ignore_case and regex_forbid 
 parameters.

 PARAMETER: text_require  TYPE: global and/or test block parameter  
 NO DEFAULT.  OPTIONAL PARAMETER.
 DESCRIPTION: List of one or more text strings that MUST exist on
 the web page.  See also the ignore_case and regex_require
 parameters. 

 PARAMETER: url  TYPE: test block parameter  
 NO DEFAULT.  You MUST specify file_path or url, but not both, in
 each test block.
 DESCRIPTION: URL to test, if value starts with "www.", "http://"
 will be prefixed.  A parameter file can contain some test blocks
 that specify file_path and some that specify url.


 APACHE DIRECTORY AND FILES
 
 The apache_dir parameter must be set to the name of a directory
 that contains the subdirectories "conf", "logs" and "htdocs".
 The conf subdirectory must contain a file named "httpd.conf-dist".
 The htdocs subdirectory must contain a subdirectory named webtest
 that contains a file named "is_apache_responding.html".  If your
 installation of Apache has the Perl module Apache::ASP configured,
 the apache_dir directory must also contain a subdirectory named
 "asp_tmp".

 The file httpd.conf-dist must contain all the usual Apache
 configuration parameters.  Also, the httpd.conf-dist file must
 contain the following lines INSTEAD OF the lines containing the
 corresponding parameters (i.e., Port, Listen, ServerRoot, etc.):

 Port Please_do_not_modify_PORT
 Listen Please_do_not_modify_PORT
 ServerRoot Please_do_not_modify_SERVER_ROOT
 ErrorLog Please_do_not_modify_SERVER_ROOT/logs/error.log
 LogLevel Please_do_not_modify_LOG_LEVEL
 CustomLog Please_do_not_modify_SERVER_ROOT/logs/access.log common
 PidFile Please_do_not_modify_SERVER_ROOT/apache.pid
 LockFile Please_do_not_modify_SERVER_ROOT/apache.lock
 ServerName Please_do_not_modify_HOST_NAME
 SSLMutex  file:Please_do_not_modify_SERVER_ROOT/ssl_mutex
 SSLLog      Please_do_not_modify_SERVER_ROOT/logs/ssl_engine_log
 DocumentRoot Please_do_not_modify_SERVER_ROOT/htdocs

 At runtime these tags are replaced with the values needed by the
 Apache server that the program starts.  See the Apache documentation
 for details (http://www.apache.org/docs/mod/directives.html).

 Also, if your installation of Apache has the Perl module
 Apache::ASP configured, you must use the following lines instead
 of the lines containing the corresponding parameters (i.e.,
 PERLSETVAR_GLOBAL, PERLSETVAR_MAILHOST, PERLSETVAR_MAILERRORSTO):

 Please_do_not_modify_PERLSETVAR_GLOBAL
 Please_do_not_modify_PERLSETVAR_MAILHOST
 Please_do_not_modify_PERLSETVAR_MAILERRORSTO

 These lines are usually placed in the FileMatch block of the
 VirtualHost block for the PerlHandler Apache::ASP.  At runtime
 these tags are replaced with the the directive PerlSetVar followed
 by the name of the parameter (Global, MailHost, MailErrorsTo)
 and a parameter value derived from other input parameters.  See 
 the Apache::ASP documentation for details 
 (http://www.apache-asp.org/config.html).

 The subdirectory htdocs must contain a subdirectory named webtest
 that contains a file named "is_apache_responding.html".  This file
 must contain valid HTML and must contain the string
 Please_do_not_modify_TEST_TAG somewhere in the file.  (This file is
 used to verify that Apache has started successfully.)

PREREQUISITES

 Perl version 5.000 or higher is required. The following Perl modules
 are also required.  (These are all part of the base distribution of
 version 5.005_03 and higher.)

 Cwd
 File::Basename
 File::Copy
 File::Find
 File::Path
 HTTP::Cookies
 HTTP::Request::Common
 HTTP::Response
 LWP::UserAgent
 Net::Domain
 Net::SMTP
 Sys::Hostname
 Term::ReadKey
 Time::HiRes 
 URI::URL 

RESTRICTIONS / BUGS

This module only works on Unix (e.g., Solaris, Linux, AIX, etc.). The module's HTTP requests time out after 3 minutes (the default value for LWP::UserAgent). If the file_path parameter is specified, Apache must be installed. If the file_path parameter is specified, the directory /tmp cannot be NFS-mounted, since Apache's lockfile and the SSL mutex file must be stored on a local disk.

VERSION

This document describes version 1.02, release date 14 June 2001

CHANGES

 1.04  Mon Jul 16 2001

   * Added PREREQ_PM entry into Makefile.PL.  (Thanks Britton
     <fsblk@aurora.uaf.edu> for suggesting this.)

   * Fixed bug: test parameters accept_cookies and send_cookies did not
     affected transmission and receipt of cookies at all.

 1.03  Wed Jul  4 2001

   * First release by new maintainer.

   * Fixed bug with passing form params with POST requests.

 1.02  Tue Jun 26 2001

   * OWNERSHIP OF HTTP:WebTest HAS BEEN TRANSFERRED FROM Richard
     Anderson <Richard.Anderson@raycosoft.com> TO Ilya Martynov
     <ilya@martynov.org>.  PLEASE DIRECT ALL QUESTIONS AND COMMENTS 
     TO Ilya Martynov.  So long, and thanks for all the fish.

   * Change succeed/fail count so that a successful fetch of a 
     page counts as a successful test.  (An unsuccessful fetch
     still counts as a failed test.)

   * Removed extraneous call to extract_cookies from get_response.

 1.01  Wed Jun 14 2001

   * Modified cookies parameter to allow less than 10 elements.  
     (Thanks to Thomas Ayles <tayles@arsdigita.com> for suggesting
     this.)

   * Fixed bug that caused get_response() to fail to capture all 
     cookies returned by the webserver during redirects.  Added
     subclass HTTP::WebTest::Cookies (a modified HTTP::Cookies
     class).  (Thanks to Ilya Martynov <ilya@martynov.org> for
     this fix.)

   * Modified web server response time measurement to be more 
     accurate.

   * Exported run_web_test method so it can be called directly.

 1.00  Wed Jun 06 2001

   * Added max_rtime and min_rtime parameters to test web server 
     response time.  The perl module Time::HiRes is now a
     prerequisite to install HTTP::WebTest.  (This code was
     a collaborative effort by the author and Michael Blakeley 
     <mike@blakeley.com>.)

   * Added pauth parameter for proxy authorization.  (This code 
     was a collaborative effort by the author and Darren Fulton 
     <Darren.Fulton@team.telstra.com>.)

   * Changed max_bytes and min_bytes paramters from test block 
     parameters to global and/or test block parameters.

   * Made format of output report more robust for max_bytes and 
     min_bytes parameters.

 0.30  Mon Mar 05 2001

   * Fixed ./t/*.t files so that "make test" runs correctly on 
     Solaris.  (Replaced export WEBTEST_LIB= with WEBTEST_LIB= ; 
     export WEBTEST_LIB.)  (Thanks to M. Simon Cavalletto 
     <simonm@evolution.com> for reporting this bug.)

   * Improved clarity of documentation and program output.

 0.20  Mon Feb 26 2001

   * Fixed bug that caused module to abort when a HTTP-Redirect 
     (302) is sent back with a relative URL.  Thanks to Andre 
     Machowiak <ama@ision.net> for this fix.

   * Set Content-type to 'application/x-www-form-urlencoded' 
     for POST.  Thanks to Andre Machowiak <ama@ision.net> for
     this fix.

   * Modified Makefile.PL to get path of perl using the which 
     command and create the wt script with this path in the 
     she-bang line (#!).  (Thanks to Britton <fsblk@aurora.uaf.edu>
     for reporting this bug.)

   * Modified "make test" tests to write output to files in the 
     t subdirectory.

 0.01  Sat Dec  9 10:14:53 2000
        - original version; created by h2xs 1.19
        First release to CPAN by Richard Anderson 
        <Richard.Anderson@raycosoft.com>.

TODO

Add option to validate HTML syntax using HTML::Validator. Add option to check links using HTML::LinkExtor. Add single-URL timeout block parameter to pass to LWP::UserAgent. Move test_regexes into a plugin.

AUTHOR

 Richard Anderson <Richard.Anderson@unixscripts.com>

COPYRIGHT

Copyright (c) 2000-2001 Richard Anderson. All rights reserved. This module is free software. It may be used, redistributed and/or modified under the terms of the Perl Artistic License.

SEE ALSO

wt(1), perl(1), perlre(1), perldoc Apache::ASP.