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Date:	Thu, 1 Nov 2012 13:29:41 -0500
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Subject:	Re: Problem with HTTPS in LWP module in Perl
From:	Reini Urban <rurban AT x-ray DOT at>
To:	cygwin AT cygwin DOT com
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On Thu, Nov 1, 2012 at 1:22 PM, Reini Urban wrote:
> On Thu, Nov 1, 2012 at 1:05 PM, Björn Kautler  wrote:
>> I'm having a problem with https requests to
>> "https://www.geocaching.com" in perl.
>> Nothing was done at all, then I found out I need to install
>> LWP::Protocol:https which I did with "cpan LWP::Protocol:https".
>> Now according to Wireshark at least SSL communication is started.
>> But after the "Client Hello" it just hangs until a timeout happens,
>> waiting for the "Server Hello".
>> With other HTTPS pages like "https://www.google.com" it works fine.
>> The exact same Perl script works fine under Ubuntu.
>> The https request to the same page works fine with curl under cygwin.
>> If I change the SSL socket class to Net::SSL instead of
>> IO::Socket::SSL, it also hangs after the "Client Hello", but then
>> retries with SSLv3 instead of TLSv1 according to Wireshark and this at
>> least works a bit better though not completely.
>> So I guess something is weird in the Cygwin port of IO::Socket::SSL. :-/
>
> Probably, but I cannot reproduce it.
> If it is, you need to file a rt.cpan.org ticket for this,
> with some wireshark loggings and the exact request.
>
> $ lwp-request https://www.geocaching.com/
> 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not
> installed)
> $ cpan LWP::Protocol::https
> ... (built and installed SULLR/IO-Socket-SSL-1.77.tar.gz,
> GAAS/LWP-Protocol-https-6.03.tar.gz)
>   /usr/bin/make install  -- OK
>
> $ lwp-request -USed https://www.geocaching.com/
> GET https://www.geocaching.com/
> User-Agent: lwp-request/6.03 libwww-perl/6.04
>
> 500 Can't connect to www.geocaching.com:443
> Content-Type: text/plain
> Client-Date: Thu, 01 Nov 2012 18:21:07 GMT
> Client-Warning: Internal response
>
> From debian:
> $ lwp-request -USed https://www.geocaching.com/
> GET https://www.geocaching.com/
> User-Agent: lwp-request/5.834 libwww-perl/6.04
>
> GET https://www.geocaching.com/ --> 500 Can't connect to www.geocaching.com:443
> Content-Type: text/plain
> Client-Date: Thu, 01 Nov 2012 18:18:49 GMT
> Client-Warning: Internal response
>
> $ lwp-request -USed https://www.google.com/
> -> 200 OK

I got a bit more information from some other version:

$ perl5.14.3 -S lwp-request -USed https://www.geocaching.com/
GET https://www.geocaching.com/
User-Agent: lwp-request/5.834 libwww-perl/6.04

GET https://www.geocaching.com/ --> 500 Can't connect to
www.geocaching.com:443 (Crypt-SSLeay can't verify hostnames)
Content-Type: text/plain
Client-Date: Thu, 01 Nov 2012 18:22:57 GMT
Client-Warning: Internal response

So I think it's on the application level, not the library. This is
with Crypt::SSLeay 0.64.
My Cygwin has 0.60, and debian had 0.58.

See http://stackoverflow.com/questions/12116244/https-proxy-and-lwpuseragent
how to utilize PERL_LWP_SSL_VERIFY_HOSTNAME=0
-- 
Reini Urban
http://cpanel.net/   http://www.perl-compiler.org/

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