Tools: added autotest for networking over UDP

downloads a log with mavlink over UDP from NET_P1 port

Tools/autotest/ardusub.py

@@ -530,6 +530,7 @@ class AutoTestSub(vehicle_test_suite.TestSuite):
             self.MotorThrustHoverParameterIgnore,
             self.SET_POSITION_TARGET_GLOBAL_INT,
             self.TestLogDownloadMAVProxy,
+            self.TestLogDownloadMAVProxyNetwork,
             self.MAV_CMD_NAV_LOITER_UNLIM,
             self.MAV_CMD_NAV_LAND,
             self.MAV_CMD_MISSION_START,

Tools/autotest/vehicle_test_suite.py

@@ -4137,6 +4137,35 @@ class TestSuite(ABC):
         self.mavproxy_unload_module(mavproxy, 'log')
         self.stop_mavproxy(mavproxy)
 
+    def TestLogDownloadMAVProxyNetwork(self, upload_logs=False):
+        """Download latest log over network port"""
+        self.context_push()
+        self.set_parameters({
+            "NET_ENABLED": 1,
+            "NET_DHCP": 0,
+            "NET_P1_TYPE": 1,
+            "NET_P1_PROTOCOL": 2,
+            "NET_P1_PORT": 15004,
+            "NET_P1_IP0": 127,
+            "NET_P1_IP1": 0,
+            "NET_P1_IP2": 0,
+            "NET_P1_IP3": 1
+            })
+        self.reboot_sitl()
+        filename = "MAVProxy-downloaded-net-log.BIN"
+        mavproxy = self.start_mavproxy(master=':15004')
+        self.mavproxy_load_module(mavproxy, 'log')
+        mavproxy.send("log list\n")
+        mavproxy.expect("numLogs")
+        self.wait_heartbeat()
+        self.wait_heartbeat()
+        mavproxy.send("set shownoise 0\n")
+        mavproxy.send("log download latest %s\n" % filename)
+        mavproxy.expect("Finished downloading", timeout=120)
+        self.mavproxy_unload_module(mavproxy, 'log')
+        self.stop_mavproxy(mavproxy)
+        self.context_pop()
+
     def show_gps_and_sim_positions(self, on_off):
         """Allow to display gps and actual position on map."""
         if on_off is True:
@@ -8123,7 +8152,7 @@ Also, ignores heartbeats not from our target system'''
     def defaults_filepath(self):
         return None
 
-    def start_mavproxy(self, sitl_rcin_port=None):
+    def start_mavproxy(self, sitl_rcin_port=None, master=None):
         self.start_mavproxy_count += 1
         if self.mavproxy is not None:
             return self.mavproxy
@@ -8138,9 +8167,12 @@ Also, ignores heartbeats not from our target system'''
         if sitl_rcin_port is None:
             sitl_rcin_port = self.sitl_rcin_port()
 
+        if master is None:
+            master = 'tcp:127.0.0.1:%u' % self.adjust_ardupilot_port(5762)
+
         mavproxy = util.start_MAVProxy_SITL(
             self.vehicleinfo_key(),
-            master='tcp:127.0.0.1:%u' % self.adjust_ardupilot_port(5762),
+            master=master,
             logfile=self.mavproxy_logfile,
             options=self.mavproxy_options(),
             pexpect_timeout=pexpect_timeout,