mozrepl invalid characters

jkanko has asked for the wisdom of the Perl Monks concerning the following question:

I'm working on a project utilizing www-mechanize-firefox and I'm getting an invalid character error to mozrepl & json that is killing my proggie:

(Sub)string is [tle>\n\n\n      \n              \n              <] at 
+C:/Perl/si
te/lib/MozRepl/RemoteObject.pm line 191, <DATA> line 1.
invalid character encountered while parsing JSON string, at character 
+offset 121
 (before "\t\n\t\t\n\t\t<meta ...") at C:/Perl/site/lib/MozRepl/Remote
+Object.pm
line 181
[download]

I'm not sure if I should get rid of a "die on error" or if there is a handler I can use to get past this...

The code is fairly simple:
$mech = WWW::Mechanize::FireFox->new( autocheck => 1 );
$mech->get( " __fooz__barz__ " );
$mech->follow_link( text => 'View all' );
[download]

I intermittently get the error on the initial page load and also after the follow link. The page is using embedded js on aspx...

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Re: mozrepl invalid characters by Corion (Patriarch) on May 12, 2010 at 20:40 UTC
This is usually when the result contains UTF-8 characters or Latin-1 characters when JSON is not expecting them. I've tried to escape/encode them in the recent versions of WWW::Mechanize::Firefox. From looking at your code, it seems you're using a very early version of the module when it was still named `::FireFox`. Consider upgrading to the latest release which should handle weird encodings far better.	[reply]
Re^2: mozrepl invalid characters by jkanko (Initiate) on May 13, 2010 at 00:14 UTC
Switched over to Linux and got newest package and it's working swimmingly. Thanks!	[reply]