That's where I'd jump into the Perl debugger and figure out why it is silently failing.

Inspecting the code, I found:

sub socket_class
{
    my $self = shift;
    (ref($self) || $self) . "::Socket";
}
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So you might try adding:

package MyHttp;
sub socket_class { "LWP::Protocol::http::Socket" }
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But I don't see why that problem would cause a silent failure.