Add QUIC support

This commit exposes various QUIC methods so that you can build QUIC
clients and servers

Author: tenderlove

ext/openssl/extconf.rb

@@ -169,6 +169,29 @@ def find_openssl_library
 # added in 3.5.0
 have_func("SSL_get0_peer_signature_name(NULL, NULL)", ssl_h)
 
+# QUIC support - added in OpenSSL 3.2.0
+have_func("OSSL_QUIC_client_method()", ssl_h)
+have_func("OSSL_QUIC_client_thread_method()", ssl_h)
+have_func("SSL_new_stream(NULL, 0)", ssl_h)
+have_func("SSL_accept_stream(NULL, 0)", ssl_h)
+have_func("SSL_stream_conclude(NULL)", ssl_h)
+have_func("SSL_get_stream_id(NULL)", ssl_h)
+have_func("SSL_set_default_stream_mode(NULL, 0)", ssl_h)
+have_func("SSL_set_blocking_mode(NULL, 0)", ssl_h)
+have_func("SSL_get_blocking_mode(NULL)", ssl_h)
+have_func("SSL_handle_events(NULL)", ssl_h)
+have_func("SSL_get_event_timeout(NULL, NULL, NULL)", ssl_h)
+have_func("SSL_get0_connection(NULL)", ssl_h)
+have_func("SSL_is_connection(NULL)", ssl_h)
+have_func("SSL_set1_initial_peer_addr(NULL, NULL)", ssl_h)
+have_func("OSSL_QUIC_server_method()", ssl_h)
+have_func("SSL_new_listener(NULL, 0)", ssl_h)
+have_func("SSL_accept_connection(NULL, 0)", ssl_h)
+have_func("SSL_get_accept_connection_queue_len(NULL)", ssl_h)
+have_func("SSL_listen(NULL)", ssl_h)
+have_func("SSL_poll(NULL, 0, 0, NULL, 0, NULL)", ssl_h)
+have_func("SSL_set_incoming_stream_policy(NULL, 0, 0)", ssl_h)
+
 Logging::message "=== Checking done. ===\n"
 
 # Append flags from environment variables.

ext/openssl/ossl.h

@@ -78,6 +78,10 @@
 # define OSSL_HAVE_IMMUTABLE_PKEY
 #endif
 
+#if !OSSL_IS_LIBRESSL && defined(HAVE_OSSL_QUIC_CLIENT_METHOD)
+# define OSSL_USE_QUIC
+#endif
+
 /*
  * Common Module
  */