Diff: tools/host_tests/udp_link_layer_auto.py

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/host_tests/udp_link_layer_auto.py	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,145 @@
+"""
+mbed SDK
+Copyright (c) 2011-2013 ARM Limited
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+"""
+
+"""
+How to use:
+make.py -m LPC1768 -t ARM -d E:\ -n NET_14
+udp_link_layer_auto.py -p COM20 -d E:\ -t 10
+"""
+
+import re
+import uuid
+import socket
+import thread
+from sys import stdout
+from time import time, sleep
+from host_test import DefaultTest
+from SocketServer import BaseRequestHandler, UDPServer
+
+
+# Received datagrams (with time)
+dict_udp_recv_datagrams = dict()
+
+# Sent datagrams (with time)
+dict_udp_sent_datagrams = dict()
+
+
+class UDPEchoClient_Handler(BaseRequestHandler):
+    def handle(self):
+        """ One handle per connection
+        """
+        _data, _socket = self.request
+        # Process received datagram
+        data_str = repr(_data)[1:-1]
+        dict_udp_recv_datagrams[data_str] = time()
+
+
+def udp_packet_recv(threadName, server_ip, server_port):
+    """ This function will receive packet stream from mbed device
+    """
+    server = UDPServer((server_ip, server_port), UDPEchoClient_Handler)
+    print "[UDP_COUNTER] Listening for connections... %s:%d"% (server_ip, server_port)
+    server.serve_forever()
+
+
+class UDPEchoServerTest(DefaultTest):
+    ECHO_SERVER_ADDRESS = ""       # UDP IP of datagram bursts
+    ECHO_PORT = 0                  # UDP port for datagram bursts
+    CONTROL_PORT = 23              # TCP port used to get stats from mbed device, e.g. counters
+    s = None                       # Socket
+
+    TEST_PACKET_COUNT = 1000       # how many packets should be send
+    TEST_STRESS_FACTOR = 0.001     # stress factor: 10 ms
+    PACKET_SATURATION_RATIO = 29.9 # Acceptable packet transmission in %
+
+    PATTERN_SERVER_IP = "Server IP Address is (\d+).(\d+).(\d+).(\d+):(\d+)"
+    re_detect_server_ip = re.compile(PATTERN_SERVER_IP)
+
+    def get_control_data(self, command="stat\n"):
+        BUFFER_SIZE = 256
+        try:
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.connect((self.ECHO_SERVER_ADDRESS, self.CONTROL_PORT))
+        except Exception, e:
+            data = None
+        s.send(command)
+        data = s.recv(BUFFER_SIZE)
+        s.close()
+        return data
+
+    def test(self):
+        serial_ip_msg = self.mbed.serial_readline()
+        if serial_ip_msg is None:
+            return self.RESULT_IO_SERIAL
+        stdout.write(serial_ip_msg)
+        stdout.flush()
+        # Searching for IP address and port prompted by server
+        m = self.re_detect_server_ip.search(serial_ip_msg)
+        if m and len(m.groups()):
+            self.ECHO_SERVER_ADDRESS = ".".join(m.groups()[:4])
+            self.ECHO_PORT = int(m.groups()[4]) # must be integer for socket.connect method
+            self.notify("HOST: UDP Server found at: " + self.ECHO_SERVER_ADDRESS + ":" + str(self.ECHO_PORT))
+
+        # Open client socket to burst datagrams to UDP server in mbed
+        try:
+            self.s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        except Exception, e:
+            self.s = None
+            self.notify("HOST: Error: %s"% e)
+            return self.RESULT_ERROR
+
+        # UDP replied receiver works in background to get echoed datagrams
+        SERVER_IP = str(socket.gethostbyname(socket.getfqdn()))
+        SERVER_PORT = self.ECHO_PORT + 1
+        thread.start_new_thread(udp_packet_recv, ("Thread-udp-recv", SERVER_IP, SERVER_PORT))
+        sleep(0.5)
+
+        # Burst part
+        for no in range(self.TEST_PACKET_COUNT):
+            TEST_STRING = str(uuid.uuid4())
+            payload = str(no) + "__" + TEST_STRING
+            self.s.sendto(payload, (self.ECHO_SERVER_ADDRESS, self.ECHO_PORT))
+            dict_udp_sent_datagrams[payload] = time()
+            sleep(self.TEST_STRESS_FACTOR)
+
+        if self.s is not None:
+            self.s.close()
+
+        # Wait 5 seconds for packets to come
+        result = True
+        self.notify("HOST: Test Summary:")
+        for d in range(5):
+            sleep(1.0)
+            summary_datagram_success = (float(len(dict_udp_recv_datagrams)) / float(self.TEST_PACKET_COUNT)) * 100.0
+            self.notify("HOST: Datagrams received after +%d sec: %.3f%% (%d / %d), stress=%.3f ms"% (d,
+                                                                                                     summary_datagram_success,
+                                                                                                     len(dict_udp_recv_datagrams),
+                                                                                                     self.TEST_PACKET_COUNT,
+                                                                                                     self.TEST_STRESS_FACTOR))
+            result = result and (summary_datagram_success >= self.PACKET_SATURATION_RATIO)
+            stdout.flush()
+
+        # Getting control data from test
+        self.notify("...")
+        self.notify("HOST: Mbed Summary:")
+        mbed_stats = self.get_control_data()
+        self.notify(mbed_stats)
+        return self.RESULT_SUCCESS if result else self.RESULT_FAILURE
+
+
+if __name__ == '__main__':
+    UDPEchoServerTest().run()