Beginning Web Development With Perl : From Novice to ... - Nabo

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222CHAPTER 11 ■ DEVELOPMENT WITH MOD_PERLuse Apache::Constants (NOT_FOUND);my $r = shift;$r->status(NOT_FOUND);■Note You can also use methods for specific error headers. See the documentation for Apache::Tableand mod_perl for more information about these headers.Working with CookiesAs you know, cookies are another object that can be sent in the HTTP header. You can use theApache::Cookie class, part of libapreq, to set and retrieve cookies the mod_perl way.Jump in the wayback machine to Chapter 1, which covered cookies in detail. There,you learned all about the values for cookies and how to set them with CGI.pm. UnlikeCGI.pm, Apache::Cookie is written in C. This section looks at writing and reading cookiesusing Apache::Cookie.Writing CookiesCookies are written or sent to the client by instantiating a new Apache::Cookie object. TheApache::Cookie class contains methods that correspond to the various elements of a cookie,such as name, value, path, secure, expires, and so on. You can set these values when instantiatingthe object through the new() method or via calls to their respective method. Table 11-3lists the methods, as well as the name of the corresponding parameter if you’re using themwhen instantiating the object.Table 11-3. Apache::Cookie Methods and ParametersMethod Parameter Descriptionname() -name The cookie namevalue() -value The cookie’s valueexpires() -expires The cookie’s expirationdomain() -domain The domain from which the cookie can be readpath() -path The path for the cookiesecure() -secure Whether or not the cookie must be read over an SSL transportThe cookies are sent to the browser with the bake() method. Listing 11-11 (Cookiewriter.cgi)shows an example that sets a cookie called testcookie using the Apache::Cookie class.
CHAPTER 11 ■ DEVELOPMENT WITH MOD_PERL 223Listing 11-11. Sending a Cookie with Apache::Cookieuse Apache::Cookie;use strict;my $r = shift;my $cookie = Apache::Cookie->new($r,-name => "testcookie",-value => "testvalue",-path => "/",);$cookie->bake();$r->send_http_header();The values for the cookie in the example are set via the new() method, and the bake()method is called to actually send the cookie to the client. The cookie arriving at the browseris shown in Figure 11-15.Figure 11-15. The cookie set with Apache::CookieYou can also set or change the parameter values for cookies by calling each individualmethod prior to calling bake(). For example, the program in Listing 11-12 (Securecookie.cgi)sets the secure flag on the cookie after it has already been instantiated with the new() method.Listing 11-12. Sending a Secure Cookieuse Apache::Cookie;use strict;my $r = shift;
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Beginning Web Development with Perl
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PART 5 ■ ■ ■ Creating Web Tem
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■CONTENTSvii■CHAPTER 4 System I
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■CONTENTSixCreating a SOAP Listen
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■CONTENTSxiTemplate Toolkit Synta
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About the Author■STEVE SUEHRING i
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AcknowledgmentsThanks to James Lee
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xx■INTRODUCTIONThis book will use
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CHAPTER 1■ ■ ■The CGI ModuleT
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CHAPTER 1 ■ THE CGI MODULE 5for t
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CHAPTER 1 ■ THE CGI MODULE 7Obvio
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CHAPTER 1 ■ THE CGI MODULE 9exit;
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CHAPTER 1 ■ THE CGI MODULE 11Each
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CHAPTER 1 ■ THE CGI MODULE 13When
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CHAPTER 1 ■ THE CGI MODULE 15Upda
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CHAPTER 1 ■ THE CGI MODULE 17rese
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CHAPTER 1 ■ THE CGI MODULE 19prin
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CHAPTER 1 ■ THE CGI MODULE 21Sett
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CHAPTER 1 ■ THE CGI MODULE 23You
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CHAPTER 1 ■ THE CGI MODULE 25■C
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CHAPTER 1 ■ THE CGI MODULE 27No m
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CHAPTER 1 ■ THE CGI MODULE 29The
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CHAPTER 1 ■ THE CGI MODULE 31prin
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CHAPTER 1 ■ THE CGI MODULE 33Also
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CHAPTER 2■ ■ ■Popular CGI Mod
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CHAPTER 2 ■ POPULAR CGI MODULES 3
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50CHAPTER 3 ■ DATABASES AND PERLT
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52CHAPTER 3 ■ DATABASES AND PERLm
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54CHAPTER 3 ■ DATABASES AND PERLl
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56CHAPTER 3 ■ DATABASES AND PERLc
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58CHAPTER 3 ■ DATABASES AND PERLR
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62CHAPTER 3 ■ DATABASES AND PERLw
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64CHAPTER 3 ■ DATABASES AND PERLA
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74CHAPTER 4 ■ SYSTEM INTERACTION
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76CHAPTER 4 ■ SYSTEM INTERACTIONt
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78CHAPTER 4 ■ SYSTEM INTERACTIONc
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80CHAPTER 4 ■ SYSTEM INTERACTIONA
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82CHAPTER 4 ■ SYSTEM INTERACTIONm
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84CHAPTER 4 ■ SYSTEM INTERACTIONs
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86CHAPTER 4 ■ SYSTEM INTERACTIONr
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CHAPTER 5■ ■ ■LWP ModulesLWP
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CHAPTER 5 ■ LWP MODULES 91HTTP Re
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CHAPTER 5 ■ LWP MODULES 93Get Fun
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CHAPTER 5 ■ LWP MODULES 95When ca
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CHAPTER 5 ■ LWP MODULES 97These a
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CHAPTER 5 ■ LWP MODULES 99Recall
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CHAPTER 5 ■ LWP MODULES 101which
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CHAPTER 5 ■ LWP MODULES 103For th
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CHAPTER 5 ■ LWP MODULES 105Obviou
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108CHAPTER 6 ■ NET:: TOOLSCreatin
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110CHAPTER 6 ■ NET:: TOOLSThe out
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112CHAPTER 6 ■ NET:: TOOLSmy $pop
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114CHAPTER 6 ■ NET:: TOOLSthe POP
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116CHAPTER 6 ■ NET:: TOOLS($messa
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118CHAPTER 6 ■ NET:: TOOLSListing
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120CHAPTER 6 ■ NET:: TOOLSFor the
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122CHAPTER 6 ■ NET:: TOOLSNet::SM
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124CHAPTER 6 ■ NET:: TOOLS$smtpco
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126CHAPTER 6 ■ NET:: TOOLSuse Net
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128CHAPTER 6 ■ NET:: TOOLSListing
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130CHAPTER 6 ■ NET:: TOOLSFor exa
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132CHAPTER 6 ■ NET:: TOOLSSending
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PART 3■ ■ ■XML and RSS
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138CHAPTER 7 ■ SOAP-BASED WEB SER
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154CHAPTER 8 ■ PERL AND RSSFigure
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156CHAPTER 8 ■ PERL AND RSShttp:/
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158CHAPTER 8 ■ PERL AND RSSDebugg
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160CHAPTER 8 ■ PERL AND RSS$rsswr
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162CHAPTER 8 ■ PERL AND RSSListin
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CHAPTER 9■ ■ ■XML Parsing wit
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CHAPTER 9 ■ XML PARSING WITH PERL
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CHAPTER 9 ■ XML PARSING WITH PERL
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Page 192 and 193: PART 4■ ■ ■PerformanceEnhance
Page 194 and 195: 184CHAPTER 10 ■ APACHE AND MOD_PE
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Page 242 and 243: CHAPTER 12■ ■ ■The Template T
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Page 272 and 273: CHAPTER 13■ ■ ■Perl Web Sites
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CHAPTER 13 ■ PERL WEB SITES WITH
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284APPENDIX ■ PERL BASICSKeywords
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286APPENDIX ■ PERL BASICS$ perl n
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288APPENDIX ■ PERL BASICSAnd line
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290APPENDIX ■ PERL BASICSCan you
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292APPENDIX ■ PERL BASICSBy defau
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294APPENDIX ■ PERL BASICS#!/usr/b
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296APPENDIX ■ PERL BASICSThe last
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298APPENDIX ■ PERL BASICSThe NOT
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300APPENDIX ■ PERL BASICSprint "S
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302APPENDIX ■ PERL BASICSthe syst
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304APPENDIX ■ PERL BASICS$ perl s
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306APPENDIX ■ PERL BASICSThis cod
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308APPENDIX ■ PERL BASICS$a = 6 *
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310APPENDIX ■ PERL BASICS$a = "A9
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312APPENDIX ■ PERL BASICS#!/usr/b
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314APPENDIX ■ PERL BASICSmy $name
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316APPENDIX ■ PERL BASICSis short
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318APPENDIX ■ PERL BASICSLet’s
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320APPENDIX ■ PERL BASICSOther Te
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322APPENDIX ■ PERL BASICS}}}actio
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324APPENDIX ■ PERL BASICSNotice t
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326APPENDIX ■ PERL BASICSLooping
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328APPENDIX ■ PERL BASICSuse stri
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330APPENDIX ■ PERL BASICSuntil ($
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332APPENDIX ■ PERL BASICSuse stri
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334APPENDIX ■ PERL BASICSdoneAll
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336APPENDIX ■ PERL BASICS$ perl r
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338APPENDIX ■ PERL BASICSSummaryT
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340■INDEXmethods for retrieving r
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342■INDEXdo() method for, 62dumpi
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344■INDEXhello option for Net::SM
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346■INDEXNet::DNS module, 125-128
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348■INDEXrecord with Net::DNS mod
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350■INDEXstoring mail server in e
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352■INDEXlogging based on, 229pri
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