Publiquei esse problema no Perl Monks ontem, mas funcionou para todos que o tentaram (consultehttp: //www.perlmonks.org/? node_id = 909968). No entanto, eu estava usando um URL diferente na esperança de simplificar o problema.

Estou tentando conectar-me ao api.betfair.com via HTTPS e eles têm um certificado válido que verifiquei no meu navegador. Estou executando o ubuntu e tenho 2 versões do Perl. O sistema 5.10.0 funciona e o 5.14.0 instalado via perlbrew falha. O código é:

use LWP::UserAgent; 
use strict;
use warnings;

#$ENV{HTTPS_CA_FILE} = "/usr/share/ca-certificates/cacert.org/cacert.org.crt";

my $ua  = LWP::UserAgent->new; 
my $req = HTTP::Request->new(GET => 'https://api.betfair.com');
my $res = $ua->request($req);

print $res->headers_as_string;
print $res->content;

Executando isso no sistema Perl 5.10.0, ele funciona bem e eu recebo:

Date: Fri, 17 Jun 2011 08:33:04 GMT
Accept-Ranges: bytes
ETag: W/"0-1307353787000"
Content-Length: 0
Content-Type: text/html
Last-Modified: Mon, 06 Jun 2011 09:49:47 GMT
Client-Date: Fri, 17 Jun 2011 08:33:04 GMT
Client-Peer: 84.20.200.10:443
Client-Response-Num: 1
Client-SSL-Cert-Issuer: /C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)09/CN=VeriSign Class 3 Secure Server CA - G2
Client-SSL-Cert-Subject: /C=GB/ST=London/L=London/O=The Sporting Exchange Ltd/OU=IS/OU=Terms of use at www.verisign.com/rpa (c)05/CN=*.betfair.com
Client-SSL-Cipher: RC4-MD5
Set-Cookie: NSC_mc-80-qvcbqj.efgbvmu=ffffffff09208c5545525d5f4f58455e445a4a4229a0;expires=Fri, 17-Jun-2011 20:33:05 GMT;path=/;httponly

Executando-o no Perl 5.14.0, recebo: Tipo de conteúdo: text / plain Data do cliente: Sex, 17 de junho de 2011 08:34:30 GMT Aviso do cliente: Resposta interna Não é possível conectar-se a api.betfair.com:44

Se eu descomentar a configuração de HTTPS_CA_FILE e executar novamente no 5.14.0, obtenho:

Content-Type: text/plain
Client-Date: Fri, 17 Jun 2011 08:35:09 GMT
Client-Warning: Internal response
Can't connect to api.betfair.com:443 (certificate verify failed)

LWP::Protocol::https::Socket: SSL connect attempt failed with unknown errorerror:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed at /home/martin/perl5/perlbrew/perls/perl-5.14.0/lib/site_perl/5.14.0/LWP/Protocol/http.pm line 51.

Eu tenho o Mozilla :: CA instalado na versão 20110409. Mozilla :: CA :: SSL_ca_file () retorna "/home/martin/perl5/perlbrew/perls/perl-5.14.0/lib/site_perl/5.14.0/Mozilla/ CA / cacert.pem "e existe e é legível por mim. Estou usando o LWP 6.02 no Perl 5.14.0 e 5.836 no Perl 5.10.0. Eu li a configuração HTTPS_DEBUG = 1 deve gerar algumas informações de depuração, mas isso só é possível para mim ao usar o Perl 5.10.0 e não o 5.14.

Eu não sou um guru de SSL, mas tentei algumas coisas que encontrei e elas me deixam mais confusa:

openssl verify -verbose -CAfile /home/martin/perl5/perlbrew/perls/perl-5.14.0/lib/site_perl/5.14.0/Mozilla/CA/cacert.pem < /dev/null
unable to load certificate
10888:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:647:Expecting: TRUSTED CERTIFICATE

openssl s_client -CAfile /usr/local/share/perl/5.10.0/Mozilla/CA/cacert.pem -connect api.betfair.com:443 < /dev/null
CONNECTED(00000003)
depth=1 /C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)09/CN=VeriSign Class 3 Secure Server CA - G2
verify error:num=20:unable to get local issuer certificate
verify return:0
---
Certificate chain
 0 s:/C=GB/ST=London/L=London/O=The Sporting Exchange Ltd/OU=IS/OU=Terms of use at www.verisign.com/rpa (c)05/CN=*.betfair.com
   i:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)09/CN=VeriSign Class 3 Secure Server CA - G2
 1 s:/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)09/CN=VeriSign Class 3 Secure Server CA - G2
   i:/C=US/O=VeriSign, Inc./OU=Class 3 Public Primary Certification Authority - G2/OU=(c) 1998 VeriSign, Inc. - For authorized use only/OU=VeriSign Trust Network
---
Server certificate
-----BEGIN CERTIFICATE-----
certificate snipped
sg==
-----END CERTIFICATE-----
subject=/C=GB/ST=London/L=London/O=The Sporting Exchange Ltd/OU=IS/OU=Terms of use at www.verisign.com/rpa (c)05/CN=*.betfair.com
issuer=/C=US/O=VeriSign, Inc./OU=VeriSign Trust Network/OU=Terms of use at https://www.verisign.com/rpa (c)09/CN=VeriSign Class 3 Secure Server CA - G2
---
No client certificate CA names sent
---
SSL handshake has read 3068 bytes and written 303 bytes
---
New, TLSv1/SSLv3, Cipher is RC4-MD5
Server public key is 1024 bit
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : RC4-MD5
    Session-ID: 81802384A47AF45D2D809A2D10041A4E0B4B4DD821507569216A199ED467B207
    Session-ID-ctx: 
    Master-Key: 50DEC11CD2FA57E9BFA95B0156905D2717A79F333A2028FCCCB0F1C32A6B35202A958CEF24D3D2332A00CDCD158B40FB
    Key-Arg   : None
    Start Time: 1308304989
    Timeout   : 300 (sec)
    Verify return code: 20 (unable to get local issuer certificate)
---
DONE

UPDATE: Eu pensei que era porque eu tinha PERL_UNICODE = SAL definido, mas desmarcar isso não resolve o problem

UPDATE: versões: Linux ubuntu 10.10 codinome maverick openssl 0.9.80 (Acredito atualizado na minha distribuição ubuntu