Issue #10533 has been reported by Eric Hodel.

----------------------------------------
Bug #10533: HTTP reconnection with SNI does not send correct hostname
https://bugs.ruby-lang.org/issues/10533

* Author: Eric Hodel
* Status: Open
* Priority: Normal
* Assignee: 
* Category: lib
* Target version: 
* ruby -v: ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-darwin14.0]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
When reconnecting after connection timeout on an SNI connection the server name is not sent during reconnect which results in a failed reconnection:

~~~
$ cat test.rb
require 'net/http'
uri = URI 'https://david.shanske.com'

Net::HTTP.start uri.hostname, uri.port, use_ssl: true do |http|
  req = Net::HTTP::Get.new uri
  response = http.request req
  p response.code
  sleep 310
  req = Net::HTTP::Get.new uri
  response = http.request req
  p response.code
end
$ ruby -v test.rb
ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-darwin14.0]
"200"
/usr/local/lib/ruby/2.1.0/openssl/ssl.rb:178:in `post_connection_check': hostname "david.shanske.com" does not match the server certificate (OpenSSL::SSL::SSLError)
        from /usr/local/lib/ruby/2.1.0/net/http.rb:922:in `connect'
        from /usr/local/lib/ruby/2.1.0/net/http.rb:1447:in `begin_transport'
        from /usr/local/lib/ruby/2.1.0/net/http.rb:1404:in `transport_request'
        from /usr/local/lib/ruby/2.1.0/net/http.rb:1378:in `request'
        from test.rb:10:in `block in <main>'
        from /usr/local/lib/ruby/2.1.0/net/http.rb:853:in `start'
        from /usr/local/lib/ruby/2.1.0/net/http.rb:583:in `start'
        from test.rb:4:in `<main>'
~~~




-- 
https://bugs.ruby-lang.org/