Refactor UDP tests

This commit mostly moves the code around to make the parts of the UDP
unit test suite reusable. That changes the unit test suite structure
to resemble that of stream based unit tests.

The motivation behind this is to reuse most of the code for the new
PROXY over UDP uni tests suite.

tests/isc/netmgr_common.h

@@ -42,6 +42,9 @@ extern isc_tlsctx_t *tcp_listen_tlsctx;
 extern isc_tlsctx_t *tcp_connect_tlsctx;
 extern isc_tlsctx_client_session_cache_t *tcp_tlsctx_client_sess_cache;
 
+extern isc_sockaddr_t udp_listen_addr;
+extern isc_sockaddr_t udp_connect_addr;
+
 extern uint64_t send_magic;
 extern uint64_t stop_magic;
 
@@ -432,3 +435,111 @@ proxystreamtls_shutdownread_teardown(void **state);
 
 void
 stop_listening(void *arg ISC_ATTR_UNUSED);
+
+/* UDP */
+
+/* Timeout for soft-timeout tests (0.05 seconds) */
+#define UDP_T_SOFT 50
+
+/* Timeouts in miliseconds */
+#define UDP_T_INIT	 120 * 1000
+#define UDP_T_IDLE	 120 * 1000
+#define UDP_T_KEEPALIVE	 120 * 1000
+#define UDP_T_ADVERTISED 120 * 1000
+#define UDP_T_CONNECT	 30 * 1000
+
+int
+setup_udp_test(void **state);
+
+int
+teardown_udp_test(void **state);
+
+int
+udp_noop_setup(void **state);
+
+int
+udp_noop_teardown(void **state);
+
+void
+udp_noop(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_noresponse_setup(void **state);
+
+int
+udp_noresponse_teardown(void **state);
+
+void
+udp_noresponse(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_timeout_recovery_setup(void **state);
+
+int
+udp_timeout_recovery_teardown(void **state);
+
+void
+udp_timeout_recovery(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_shutdown_connect_setup(void **state);
+
+int
+udp_shutdown_connect_teardown(void **state);
+
+void
+udp_shutdown_connect(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_shutdown_read_setup(void **state);
+
+int
+udp_shutdown_read_teardown(void **state);
+
+void
+udp_shutdown_read(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_cancel_read_setup(void **state);
+
+int
+udp_cancel_read_teardown(void **state);
+
+void
+udp_cancel_read(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_recv_one_setup(void **state);
+
+int
+udp_recv_one_teardown(void **state);
+
+void
+udp_recv_one(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_recv_two_setup(void **state);
+
+int
+udp_recv_two_teardown(void **state);
+
+void
+udp_recv_two(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_recv_send_setup(void **state);
+
+int
+udp_recv_send_teardown(void **state);
+
+void
+udp_recv_send(void **arg ISC_ATTR_UNUSED);
+
+int
+udp_double_read_setup(void **state);
+
+int
+udp_double_read_teardown(void **state);
+
+void
+udp_double_read(void **arg ISC_ATTR_UNUSED);