in reply to Protocol scheme 'http' is not supported

$mech->get( $uri ) returns an HTTP::Response object. Try changing 

$mech->get('http://www.perlmonks.com/');
print $mech->content;

[download]

to

my $http_response_object = $mech->get('http://www.perlmonks.com/');
print $http_response_object->content;

[download]

This worked for me:

$ perl -e 'use WWW::Mechanize; my $mech = WWW::Mechanize->new; my $hro
+ = $mech->get(q{http://www.perlmonks.com/}); print $hro->content' | l
+ess

[download]

-- Ken

Replies are listed 'Best First'.
Re^2: Protocol scheme 'http' is not supported
by ggerke (Novice) on Jul 28, 2012 at 11:37 UTC

    Thanks for the reply. Unfortunately I get the same results...

    $ perl -e 'use WWW::Mechanize; my $mech = WWW::Mechanize->new; my $hro= $mech->get(q{http://www.perlmonks.com/}); print $hro->content'

    Error GETing http://www.perlmonks.com/: Protocol scheme 'http' is not supported at -e line 1.

    However, oddly enough if I do the same command with sudo I get the following:

    $ sudo perl -e 'use WWW::Mechanize; my $mech = WWW::Mechanize->new; my $hro= $mech->get(q{http://www.perlmonks.com/}); print $hro->content'

    HTML::Parser object version 3.69 does not match bootstrap parameter 3.55 at /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/XSLoader.pm line 94.

    Compilation failed in require at /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi/HTML/Entities.pm line 152.

    Compilation failed in require at /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi/HTML/TokeParser.pm line 9.

    BEGIN failed--compilation aborted at /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi/HTML/TokeParser.pm line 9.

    Compilation failed in require at /usr/lib/perl5/site_perl/5.8.8/WWW/Mechanize.pm line 134.

    BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.8.8/WWW/Mechanize.pm line 134.

    Compilation failed in require at -e line 1.

    BEGIN failed--compilation aborted at -e line 1.

    So I checked HTML::Parser and the rest and found:

    $ sudo perl -MCPAN -e shell 

    cpan shell -- CPAN exploration and modules installation (v1.9800) Ente
+r 'h' for help.

cpan[1]> install HTML::Parser
HTML::Parser is up to date (3.69).

cpan[2]> install XSLoader
XSLoader is up to date (0.15).

cpan[3]> install HTML::Entities
HTML::Entities is up to date (3.69).

cpan[4]> install HTML::TokeParser
HTML::TokeParser is up to date (3.69).

cpan[5]> install WWW::Mechanize
WWW::Mechanize is up to date (1.72).

    [download]

    And then looking at my @INC and doing some find'ing I'm seeing: 

    $ perl -e 'print join("\n",@INC);'
/usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi
/usr/lib/perl5/site_perl/5.8.8
/usr/lib/perl5/site_perl
/usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi
/usr/lib/perl5/vendor_perl/5.8.8
/usr/lib/perl5/vendor_perl
/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi
/usr/lib/perl5/5.8.8
.
$
$
$ sudo find /usr -name Mechanize.pm -exec ls -l {} \;
-rwxr-xr-x 1 root root 79472 Feb  2 16:38 /usr/lib/perl5/site_perl/5.8
+.8/WWW/Mechanize.pm
$ 
$ 
$ sudo find /usr -name Parser.pm -exec ls -l {} \;
-r--r--r-- 1 root root 39789 Oct 15  2011 /usr/lib64/perl5/site_perl/5
+.8.8/x86_64-linux-thread-multi/HTML/Parser.pm
-rw-r--r-- 1 root root 39509 Jul 10  2006 /usr/lib64/perl5/vendor_perl
+/5.8.8/x86_64-linux-thread-multi/HTML/Parser.pm
-rw-r--r-- 1 root root 27103 Aug 18  2003 /usr/lib64/perl5/vendor_perl
+/5.8.8/x86_64-linux-thread-multi/XML/Parser.pm
-rw-r--r-- 1 root root 64063 Dec 16  2011 /usr/lib/perl5/5.8.8/Pod/Par
+ser.pm
-r--r--r-- 1 root root 51259 Feb 20  2011 /usr/lib/perl5/5.8.8/TAP/Par
+ser.pm
$ 
$ 
$ sudo find /usr -name TokeParser.pm -exec ls -l {} \;
-r--r--r-- 1 root root 10104 Oct 15  2011 /usr/lib64/perl5/site_perl/5
+.8.8/x86_64-linux-thread-multi/HTML/TokeParser.pm
-rw-r--r-- 1 root root 10134 Apr 26  2006 /usr/lib64/perl5/vendor_perl
+/5.8.8/x86_64-linux-thread-multi/HTML/TokeParser.pm
$

    [download]

    Does any of that give a clue as to what's going on here...?

[reply]
[d/l]
[select]

      With all the same versions you show above and in your OP, I cannot reproduce your problem. I have a newer version of Perl than you and I'm on a different architecture: 

      $ perl -V
Summary of my perl5 (revision 5 version 14 subversion 2) configuration
+:
   
  Platform:
    osname=darwin, osvers=11.3.0, archname=darwin-thread-multi-2level
    uname='darwin ganymede 11.3.0 darwin kernel version 11.3.0: thu ja
+n 12 18:47:41 pst 2012; root:xnu-1699.24.23~1release_x86_64 x86_64 '

      [download]
      Read more... (4 kB)

      I noticed a discrepancy between versions for HTML::Parser. When you used sudo (above), 3.69 was returned without error: 

      $ sudo perl -MCPAN -e shell 
...
HTML::Parser is up to date (3.69).

      [download]

      without sudo (below), 3.55 was returned with an error: 

      $ perl -MDevel::Modlist -MWWW::Mechanize -e 1
HTML::Parser object version 3.55 does not match bootstrap parameter 3.
+69 ...

      [download]

      This sounds like two separate installations of Perl that are not in sync. I see you've added perl -V output below; what does sudo perl -V produce?

      -- Ken

[reply]
[d/l]
[select]
        Thanks for looking - obviously my eyes are missing something. I did the following but came up empty... 
        $ sudo perl -V > sudoV.txt
$ perl -V > V.txt
$ diff V.txt sudoV.txt
$

        [download]
        but here's the sudo perl -V output: 
        sudo perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=linux, osvers=2.6.18-274.12.1.el5, archname=x86_64-linux-th
+read-multi
    uname='linux x86-003.build.bos.redhat.com 2.6.18-274.12.1.el5 #1 s
+mp tue nov 8 21:37:35 est 2011 x86_64 x86_64 x86_64 gnulinux '
    config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOU
+RCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -
+mtune=generic -Dversion=5.8.8 -Dmyhostname=localhost -Dperladmin=root
+@localhost -Dcc=gcc -Dcf_by=Red Hat, Inc. -Dinstallprefix=/usr -Dpref
+ix=/usr -Dlibpth=/usr/local/lib64 /lib64 /usr/lib64 -Dprivlib=/usr/li
+b/perl5/5.8.8 -Dsitelib=/usr/lib/perl5/site_perl/5.8.8 -Dvendorlib=/u
+sr/lib/perl5/vendor_perl/5.8.8 -Darchlib=/usr/lib64/perl5/5.8.8/x86_6
+4-linux-thread-multi -Dsitearch=/usr/lib64/perl5/site_perl/5.8.8/x86_
+64-linux-thread-multi -Dvendorarch=/usr/lib64/perl5/vendor_perl/5.8.8
+/x86_64-linux-thread-multi -Darchname=x86_64-linux-thread-multi -Dven
+dorprefix=/usr -Dsiteprefix=/usr -Duseshrplib -Dusethreads -Duseithre
+ads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_ndbm -Di_g
+dbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstallusrbinpe
+rl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr -Dd_get
+hostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto -Ud_end
+protoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_proto -Ud_s
+etservent_r_proto -Dinc_version_list=5.8.7 5.8.6 5.8.5 -Dscriptdir=/u
+sr/bin'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define usemulti
+plicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=define use64bitall=define uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasin
+g -pipe -Wdeclaration-after-statement -I/usr/local/include -D_LARGEFI
+LE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm',
    optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
+-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -W
+declaration-after-statement -I/usr/local/include -I/usr/include/gdbm'
    ccversion='', gccversion='4.1.2 20080704 (Red Hat 4.1.2-50)', gcco
+sandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=1
+6
    ivtype='long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t',
+ lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =''
    libpth=/usr/local/lib64 /lib64 /usr/lib64
    libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread 
+-lc
    perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=true, libperl=libperl.so
    gnulibc_version='2.5'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -
+Wl,-rpath,/usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -g -pipe -Wall -Wp,-D_F
+ORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-siz
+e=4 -m64 -mtune=generic'


Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP USE_64_BIT_ALL USE_64_BIT_INT
                        USE_ITHREADS USE_LARGE_FILES USE_PERLIO
                        USE_REENTRANT_API
  Built under linux
  Compiled at Dec 16 2011 08:20:05
  @INC:
    /usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi
    /usr/lib/perl5/site_perl/5.8.8
    /usr/lib/perl5/site_perl
    /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi
    /usr/lib/perl5/vendor_perl/5.8.8
    /usr/lib/perl5/vendor_perl
    /usr/lib64/perl5/5.8.8/x86_64-linux-thread-multi
    /usr/lib/perl5/5.8.8
    .

        [download]
        I went to see where perl is installed in my path but only found the what I was expecting to find... 
        $ whereis perl
perl: /usr/bin/perl /usr/local/bin/perl /opt/admin/bin/perl /usr/share
+/man/man1/perl.1.gz
$ sudo whereis perl
perl: /usr/bin/perl /usr/local/bin/perl /opt/admin/bin/perl /usr/share
+/man/man1/perl.1.gz
$ ls -l /usr/bin/perl /usr/local/bin/perl /opt/admin/bin/perl
lrwxrwxrwx 1 root root    13 Apr 10 16:38 /opt/admin/bin/perl -> /usr/
+bin/perl
-rwxr-xr-x 2 root root 19208 Dec 16  2011 /usr/bin/perl
lrwxrwxrwx 1 root root    13 Apr 27 14:01 /usr/local/bin/perl -> /usr/
+bin/perl

        [download]
[reply]
[d/l]
[select]
Re^2: Protocol scheme 'http' is not supported
by Jessarah FL (Novice) on Mar 25, 2013 at 14:28 UTC
    I was having a similar error with:
    Protocol scheme 'http' is not supported
    I had installed libwww-perl-6.04 on perl 5.8
    It was solved by installing libwww-perl-5.837
    -Jess
[reply]

      G'day Jess,

      Welcome to the monastery.

      Thanks for the heads-up but I wasn't the one experiencing a problem. It looks like your reply was intended for ggerke: it can be moved, if you want.

      -- Ken

[reply]
        I am sorry for noticing so late your message. Yes please move it. regards, Jess
[reply]

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