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(Perl) HTTP Redirect Handling

Examine HTTP redirects.

Chilkat Perl Downloads

Perl Module for Windows, Linux, Alpine Linux,
MAC OS X, Solaris, FreeBSD, OpenBSD,
Raspberry Pi and other single board computers

use chilkat();

# This example assumes the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

$http = chilkat::CkHttp->new();

# Please note: The URL used in this example was a valid redirect many years ago,
# but the site does not exist any longer..
$url = "http://www.planyourweddingonline.co.za/";

# The FollowRedirects property controls whether redirects
# are automatically followed.  The default behavior is to
# automatically follow redirects.

# Explicitly set FollowRedirects so that redirects are automatically taken:
$http->put_FollowRedirects(1);

# Send the HTTP GET and return the content in a string.
$html = $http->quickGetStr($url);
if ($http->get_LastMethodSuccess() != 1) {
    print $http->lastErrorText() . "\r\n";
}

# On success, LastErrorText will provide information about
# what happened during the call.
print "--------------- LastErrorText ------------------" . "\r\n";
print $http->lastErrorText() . "\r\n";
print "------------------------------------------------" . "\r\n";

# In this case, we see something like this:
# ChilkatLog:
#   QuickGetHtml:
#     DllDate: Jul 27 2007
#     url: http://www.planyourweddingonline.co.za/
#     httpServer: www.planyourweddingonline.co.za
#     port: 80
#     StatusCode: 302
#     StatusText: Found
#     Reading chunked response
#     redirectUrl: main/main/home/index.php
#     url: http://www.planyourweddingonline.co.za/main/main/home/index.php
#     StatusCode: 302
#     StatusText: Found
#     Reading chunked response
#     redirectUrl: /main/main/home/index.php?SMC=1
#     url: http://www.planyourweddingonline.co.za/main/main/home/index.php?SMC=1
#     StatusCode: 200
#     StatusText: OK
#     CompressedSize: 7434
#     UncompressedSize: 40999

# Was the GET redirected?
if ($http->get_WasRedirected() == 1) {
    print "Chilkat HTTP followed the redirect." . "\r\n";

    # Display the final redirect URL:
    print "Final URL:" . "\r\n";
    print $http->finalRedirectUrl() . "\r\n";

    # Note the HTML returned is from the final redirect URL.

}
else {
    print "Not redirected." . "\r\n";
}

$status = $http->get_LastStatus();
if ($status == 200) {
    print "status = 200, OK!" . "\r\n";
}
else {
    print "HTTP Response status = " . $status . "\r\n";

    # Display the complete response header.
    print $http->lastResponseHeader() . "\r\n";
}

# Now try it without following redirects:
print "-------- Now trying without following redirects...." . "\r\n";
$http->put_FollowRedirects(0);

# Send the HTTP GET and return the content in a string.
$html = $http->quickGetStr($url);
if ($http->get_LastMethodSuccess() != 1) {
    # the HTML string can NULL if a 302 redirect response is received.
    print "HTML string returned NULL..." . "\r\n";
}

# On success, LastErrorText will provide information about
# what happened during the call.
print "--------------- LastErrorText ------------------" . "\r\n";
print $http->lastErrorText() . "\r\n";
print "------------------------------------------------" . "\r\n";

# In this case, we see something like this:
# ChilkatLog:
#   QuickGetHtml:
#     DllDate: Jul 27 2007
#     url: http://www.planyourweddingonline.co.za/
#     StatusCode: 302
#     StatusText: Found
#     Reading chunked response
#     redirectUrl: main/main/home/index.php

# Was this a redirect?  Even if FollowRedirects is false,
# WasRedirected will be true (non-zero) if the response
# indicated a redirect.
if ($http->get_WasRedirected() == 1) {
    print "This was a redirect response" . "\r\n";

    # When redirects are not followed, FinalRedirectUrl
    # contains the redirect URL that would've been taken...
    # Display the redirect URL, which was not taken...
    print "Redirect URL:" . "\r\n";
    print $http->finalRedirectUrl() . "\r\n";

}
else {
    print "Not redirected." . "\r\n";
}

$status = $http->get_LastStatus();
if ($status == 200) {
    print "status = 200, OK!" . "\r\n";
}
else {
    print "HTTP Response status = " . $status . "\r\n";

    # Display the complete response header.
    print $http->lastResponseHeader() . "\r\n";
}


 

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