TASS Belgium / Mbed 2 deprecated UDP_Receive_Test

Simple test for PicoTCP's UDP receiver.

Dependencies:   PicoTCP lpc1768-picotcp-eth mbed-rtos mbed

This project represents the official UDP Rx speed Benchmark for the PicoTCP library.

The linux host is sending 5 frames per milisecond (each frame has 1024 bytes of payload) to a the mbed board(directly connected). Each time we send a packet, a counter is increased and sent to the receiver, so it can measure the number of packets that were lost during transmission.

The result:
20 seconds Rx statistics
Total bytes received : 47557632
UDP Speed :18.142 Mbit/s
Loss percentage: 36.65 %

The python script used (which you should rename it to PicoTCP_Official_UDP_Rx_Benchmark.py)

import struct
import socket
import fcntl, os
import errno
import random, string
from time import time, sleep

ECHO_SERVER_ADDRESS = "192.168.100.12"
NUMBER_OF_SECONDS = 20
LOCAL_SERVER_PORT = 2327
MEGA = 1024*1024.
LEN_PACKET = 1024
data = ''.join('\0' for _ in range(LEN_PACKET))
counter = 0

s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM,socket.IPPROTO_UDP)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind(('', LOCAL_SERVER_PORT))

print "Started sending data...."
print "Time : %d " % time()

while True:
	start = time()
	cnt = 0
	while cnt < 5:
		
		list_data = list(data)
		list_data[3] = chr(counter>>24 & 0xFF)
		list_data[2] = chr(counter>>16 & 0xFF)
		list_data[1] = chr(counter>>8 & 0xFF)
		list_data[0] = chr(counter & 0xFF)
		data = ''.join(list_data)

		s.sendto(data, (ECHO_SERVER_ADDRESS, LOCAL_SERVER_PORT))
		cnt+=1
		counter+=1

	sleep(0.001)

This test is based on the following libraries