ruby_ecdh_test.rb

require 'openssl'
require 'socket'
require 'webrick'
require 'webrick/ssl'

OpenSSL.debug = true

cert, key = WEBrick::Utils::create_self_signed_cert(2048, [['CN', 'nobody'], ['DC', 'example']], "Generated by Ruby/OpenSSL")


ctx = OpenSSL::SSL::SSLContext.new
ctx.cert = cert
ctx.key = key
ctx.ciphers = 'ECDH+aRSA'
puts "#{ctx.ciphers.count} ciphers"

tcps = TCPServer.new('127.0.0.1', 8443)
ssls = OpenSSL::SSL::SSLServer.new(tcps, ctx)
ssls.start_immediately = true
begin
  loop do
    begin
      ssl = ssls.accept
    rescue OpenSSL::SSL::SSLError => e
      puts e
      next
    end
    puts "Connected"
    begin
      ssl.write('ACK')
    ensure
      ssl.close if ssl
    end
  end
ensure
  tcps.close if tcps
end