Problem port python ssl socket to ruby

I have such code on python:


import socket, ssl

host = '127.0.0.1'
port = 8963
sert_key = '../keys/key.pem'

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, True)
sock.setsockopt(socket.SOL_TCP, socket.TCP_NODELAY, True)
sock.settimeout(30.5)
sock.connect((host, port))
sock = ssl.wrap_socket(sock, server_side=True, certfile=sert_key,
ssl_version=ssl.PROTOCOL_TLSv1)


cert = "hello"

cert = cert.encode('utf-8')
req = ('%08x'%len(cert))+cert
sock.sendall(req)
print sock.recv(4096)

Output:
OK



And I try to port this code on ruby. This what I done:
require 'socket'
require 'openssl'

host = '127.0.0.1'
port = 8963
sert_key = '../keys/key.pem'

socket = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
address = Socket.pack_sockaddr_in(port, host)
socket.setsockopt(Socket::SOL_SOCKET, Socket::SO_KEEPALIVE, true)
socket.setsockopt(Socket::SOL_TCP, Socket::TCP_NODELAY, true)
socket.connect(address)

ssl_context = OpenSSL::SSL::SSLContext.new(:TLSv1_server)
ssl_context.cert = OpenSSL::X509::Certificate.new(File.open(sert_key))
ssl_context.key = OpenSSL::PKey::RSA.new(File.open(sert_key))
ssl_context.verify_mode = OpenSSL::SSL::VERIFY_NONE
ssl_socket = OpenSSL::SSL::SSLSocket.new(socket, ssl_context)
ssl_socket.sync = true
ssl_socket.connect


sert = "hello"
sert = sert.force_encoding('UTF-8')
req = sprintf("%08x", sert.length) + sert
ssl_socket.write(req)
puts ssl_socket.read

Problem:

On line with "ssl_socket.connect" I have error:

in `connect': SSL_connect returned=1 errno=0 state=before/connect
initialization: called a function you should not call
(OpenSSL::SSL::SSLError)

Can someone help me with this? How to in right way port this python code
to ruby?

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