diff -r ec373d762213 Lib/ftplib.py
--- a/Lib/ftplib.py	Sat Oct 03 07:37:22 2015 +0000
+++ b/Lib/ftplib.py	Sat Oct 03 13:30:22 2015 +0200
@@ -710,7 +710,8 @@
             conn, size = FTP.ntransfercmd(self, cmd, rest)
             if self._prot_p:
                 conn = self.context.wrap_socket(conn,
-                                                server_hostname=self.host)
+                                                server_hostname=self.host,
+                                                established_socket=self.sock)
             return conn, size
 
         def retrbinary(self, cmd, callback, blocksize=8192, rest=None):
diff -r ec373d762213 Lib/ssl.py
--- a/Lib/ssl.py	Sat Oct 03 07:37:22 2015 +0000
+++ b/Lib/ssl.py	Sat Oct 03 13:30:22 2015 +0200
@@ -344,12 +344,13 @@
     def wrap_socket(self, sock, server_side=False,
                     do_handshake_on_connect=True,
                     suppress_ragged_eofs=True,
-                    server_hostname=None):
+                    server_hostname=None,
+                    established_socket=None):
         return SSLSocket(sock=sock, server_side=server_side,
                          do_handshake_on_connect=do_handshake_on_connect,
                          suppress_ragged_eofs=suppress_ragged_eofs,
                          server_hostname=server_hostname,
-                         _context=self)
+                         _context=self, _established_socket=established_socket)
 
     def set_npn_protocols(self, npn_protocols):
         protos = bytearray()
@@ -501,7 +502,7 @@
                  family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None,
                  suppress_ragged_eofs=True, npn_protocols=None, ciphers=None,
                  server_hostname=None,
-                 _context=None):
+                 _context=None, _established_socket=None):
 
         self._makefile_refs = 0
         if _context:
@@ -571,6 +572,11 @@
             try:
                 self._sslobj = self._context._wrap_socket(self._sock, server_side,
                                                           server_hostname, ssl_sock=self)
+
+                # reuse session
+                if _established_socket:
+                    self._sslobj.reuse_session(_established_socket._sslobj)
+
                 if do_handshake_on_connect:
                     timeout = self.gettimeout()
                     if timeout == 0.0:
diff -r ec373d762213 Modules/_ssl.c
--- a/Modules/_ssl.c	Sat Oct 03 07:37:22 2015 +0000
+++ b/Modules/_ssl.c	Sat Oct 03 13:30:22 2015 +0200
@@ -1407,6 +1407,13 @@
     return PyUnicode_FromString(version);
 }
 
+static PyObject *
+PySSL_reuse_session(PySSLSocket *self, PySSLSocket *src)
+{
+    SSL_set_session(self->ssl, SSL_get_session(src->ssl));
+    Py_RETURN_NONE;
+}
+
 #ifdef OPENSSL_NPN_NEGOTIATED
 static PyObject *PySSL_selected_npn_protocol(PySSLSocket *self) {
     const unsigned char *out;
@@ -1924,6 +1931,7 @@
      PySSL_peercert_doc},
     {"cipher", (PyCFunction)PySSL_cipher, METH_NOARGS},
     {"version", (PyCFunction)PySSL_version, METH_NOARGS},
+    {"reuse_session", (PyCFunction)PySSL_reuse_session, METH_O},
 #ifdef OPENSSL_NPN_NEGOTIATED
     {"selected_npn_protocol", (PyCFunction)PySSL_selected_npn_protocol, METH_NOARGS},
 #endif