Test for client-only ALPN.
diff --git a/OpenSSL/test/test_ssl.py b/OpenSSL/test/test_ssl.py
index 261b9a4..220698d 100644
--- a/OpenSSL/test/test_ssl.py
+++ b/OpenSSL/test/test_ssl.py
@@ -1898,6 +1898,41 @@
self.assertEqual([(client, [b'http/1.1', b'spdy/2'])], select_args)
+ def test_alpn_no_server(self):
+ """
+ Tests that when clients and servers cannot agree on what protocol to
+ use next because the server doesn't offer ALPN.
+ """
+ select_args = []
+ def select(conn, options):
+ select_args.append((conn, options))
+ return b''
+
+ client_context = Context(TLSv1_METHOD)
+ client_context.set_alpn_protos([b'http/1.1', b'spdy/2'])
+
+ server_context = Context(TLSv1_METHOD)
+
+ # Necessary to actually accept the connection
+ server_context.use_privatekey(
+ load_privatekey(FILETYPE_PEM, server_key_pem))
+ server_context.use_certificate(
+ load_certificate(FILETYPE_PEM, server_cert_pem))
+
+ # Do a little connection to trigger the logic
+ server = Connection(server_context, None)
+ server.set_accept_state()
+
+ client = Connection(client_context, None)
+ client.set_connect_state()
+
+ # Do the dance.
+ self._interactInMemory(server, client)
+
+ self.assertEqual([(client, [b'http/1.1', b'spdy/2'])], select_args)
+ self.assertEqual(client.get_alpn_proto_negotiated(), b'')
+
+
class SessionTests(TestCase):
"""