请完成以下验证码
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def create_tcpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
sc = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Allocate socket for the server
sc_ip = None # IP address of server
sc_port = port # Port to listen on
sc.bind((sc_ip, sc_port)) # Bind to IP and Port
sc.listen() # Begin listening for incoming clients
return sc
def create_udpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
sc = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # Allocate socket for the server
sc_port = port # Port to listen on
sc.bind((eth.pretty_ip(eth.ip_address), sc_port)) # Bind to IP and Port
return sc
def disp_str(s, addr):
display.fill_rect(0,addr,144,10,1)
display.text(s, 0, addr, 0)
display.show()
# 测试基础任务二
import time
import board
import busio
import digitalio
import array
import struct
import adafruit_sharpmemorydisplay
from adafruit_wiznet5k.adafruit_wiznet5k import WIZNET5K
import adafruit_wiznet5k.adafruit_wiznet5k_socket as socket
IP_ADDRESS = (172, 17, 100, 101)
SUBNET_MASK = (255, 255, 0, 0)
GATEWAY_ADDRESS = (172, 17, 64, 1)
DNS_SERVER = (218, 203, 59, 116)
def init():
led = digitalio.DigitalInOut(board.GP25)
led.direction = digitalio.Direction.OUTPUT
# Initialize SPI bus and control pins
spi = busio.SPI(board.GP14, MOSI=board.GP15)
scs = digitalio.DigitalInOut(board.GP13) # inverted chip select
# pass in the display size, width and height, as well
# display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 96, 96)
display = adafruit_sharpmemorydisplay.SharpMemoryDisplay(spi, scs, 144, 168)
return led,display
def led_flush():
led.value = not led.value
time.sleep(0.5)
def clear_disp():
# Clear the display. Always call show after changing pixels to make the display
# update visible!
display.fill(1)
display.show()
def disp_helloworld():
print("hello world")
display.fill(1)
display.text(" hello world!", 30, 50, 0)
display.show()
def init_w5500(ip, subnet, gateway, dns):
##SPI0
SPI0_SCK = board.GP18
SPI0_TX = board.GP19
SPI0_RX = board.GP16
SPI0_CSn = board.GP17
##reset
W5x00_RSTn = board.GP20
print("Wiznet5k Ping Test (no DHCP)")
ethernetRst = digitalio.DigitalInOut(W5x00_RSTn)
ethernetRst.direction = digitalio.Direction.OUTPUT
# For Adafruit Ethernet FeatherWing
cs = digitalio.DigitalInOut(SPI0_CSn)
# For Particle Ethernet FeatherWing
# cs = digitalio.DigitalInOut(board.D5)
spi_bus = busio.SPI(SPI0_SCK, MOSI=SPI0_TX, MISO=SPI0_RX)
# Reset W5500 first
ethernetRst.value = False
time.sleep(1)
ethernetRst.value = True
# Initialize ethernet interface without DHCP
eth = WIZNET5K(spi_bus, cs, is_dhcp=False)
# Set network configuration
eth.ifconfig = (ip, subnet, gateway, dns)
print("Chip Version:", eth.chip)
print("My IP address is:", eth.pretty_ip(eth.ip_address))
return eth
def disp_w5500():
clear_disp()
display.fill(1)
cst = "chip version:" + eth.chip
display.text(cst, 0, 0, 0)
cst = "ip:" + eth.pretty_ip(eth.ip_address)
display.text(cst, 0, 10, 0)
cst = "mac:" + eth.pretty_mac(eth.mac_address)
display.text(cst, 0, 20, 0)
display.show()
def disp_str(s, addr):
display.fill_rect(0,addr,144,10,1)
display.text(s, 0, addr, 0)
display.show()
def inCksum(packet):
if len(packet) & 1:
packet = packet + '\0'
words = array.array('h', packet)
sum = 0
for word in words:
sum += (word & 0xffff)
sum = (sum>>16) + (sum & 0xffff)
sum = sum + (sum >> 16)
return (~sum) & 0xffff
def create_tcpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
sc = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # Allocate socket for the server
sc_ip = None # IP address of server
sc_port = port # Port to listen on
sc.bind((sc_ip, sc_port)) # Bind to IP and Port
sc.listen() # Begin listening for incoming clients
return sc
def create_udpserver(port):
# Initialize a socket for our server
socket.set_interface(eth)
sc = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # Allocate socket for the server
# sc_ip = None # IP address of server
sc_port = port # Port to listen on
sc.bind((eth.pretty_ip(eth.ip_address), sc_port)) # Bind to IP and Port
return sc
if __name__ == '__main__':
# 初始化led和显示模块
led,display = init()
clear_disp()
#静态初始化w5500
eth = init_w5500(IP_ADDRESS, SUBNET_MASK, GATEWAY_ADDRESS, DNS_SERVER)
disp_w5500()
# 创建一个tcp服务器
# server = create_tcpserver(40001)
# 创建一个udp服务器
server = create_udpserver(40001)
# conn, addr = server.accept() # Wait for a connection from a client.
print("socket connected")
# print(addr)
disp_str("UDP Server TEST", 30)
disp_str("socket connected", 40)
# disp_str('cli:'+addr[0]+','+str(addr[1]), 50)
disp_str('receive:', 60)
linenum = 70
while True:
led_flush()
with server:
while True:
# data = conn.recv(20)
data,addr = server.recvfrom(20)
disp_str('cli:'+addr[0]+','+str(addr[1]), 50)
if data:
print(data)
disp_str(data.decode('utf-8'),linenum)
linenum += 10
if linenum > 150:
linenum = 70
# conn.send(data) # Echo message back to client
No. Time Source Destination Protocol Length Info
82 0.439476 172.17.64.61 172.17.100.101 TCP 65 1000 → 40001 [PSH, ACK] Seq=1 Ack=1 Win=64240 Len=11
Frame 82: 65 bytes on wire (520 bits), 65 bytes captured (520 bits) on interface \Device\NPF_{CFD99493-9F53-4E3C-9055-F0CD9D70A623}, id 0
Ethernet II, Src: Dell_1e:6f:59 (50:9a:4c:1e:6f:59), Dst: de:ad:be:ef:fe:ed (de:ad:be:ef:fe:ed)
Internet Protocol Version 4, Src: 172.17.64.61, Dst: 172.17.100.101
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 51
Identification: 0x4e8c (20108)
Flags: 0x40, Don't fragment
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 128
Protocol: TCP (6)
Header Checksum: 0x0000 [validation disabled]
[Header checksum status: Unverified]
Source Address: 172.17.64.61
Destination Address: 172.17.100.101
Transmission Control Protocol, Src Port: 1000, Dst Port: 40001, Seq: 1, Ack: 1, Len: 11
Source Port: 1000
Destination Port: 40001
[Stream index: 0]
[Conversation completeness: Incomplete (12)]
[TCP Segment Len: 11]
Sequence Number: 1 (relative sequence number)
Sequence Number (raw): 1159226630
[Next Sequence Number: 12 (relative sequence number)]
Acknowledgment Number: 1 (relative ack number)
Acknowledgment number (raw): 606290203
0101 .... = Header Length: 20 bytes (5)
Flags: 0x018 (PSH, ACK)
Window: 64240
[Calculated window size: 64240]
[Window size scaling factor: -1 (unknown)]
Checksum: 0xfcea [unverified]
[Checksum Status: Unverified]
Urgent Pointer: 0
[Timestamps]
[SEQ/ACK analysis]
TCP payload (11 bytes)
Data (11 bytes)
0000 68 65 6c 6c 6f 20 77 6f 72 31 64 hello wor1d
Data: 68656c6c6f20776f723164
[Length: 11]
UDP数据分析
No. Time Source Destination Protocol Length Info
711 0.696170 172.17.64.61 172.17.100.101 UDP 51 80 → 40001 Len=9
Frame 711: 51 bytes on wire (408 bits), 51 bytes captured (408 bits) on interface \Device\NPF_{CFD99493-9F53-4E3C-9055-F0CD9D70A623}, id 0
Interface id: 0 (\Device\NPF_{CFD99493-9F53-4E3C-9055-F0CD9D70A623})
Encapsulation type: Ethernet (1)
Arrival Time: Feb 6, 2024 13:32:18.559318000 中国标准时间
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1707197538.559318000 seconds
[Time delta from previous captured frame: 0.005620000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.696170000 seconds]
Frame Number: 711
Frame Length: 51 bytes (408 bits)
Capture Length: 51 bytes (408 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:ip:udp:data]
[Coloring Rule Name: UDP]
[Coloring Rule String: udp]
Ethernet II, Src: Dell_1e:6f:59 (50:9a:4c:1e:6f:59), Dst: de:ad:be:ef:fe:ed (de:ad:be:ef:fe:ed)
Destination: de:ad:be:ef:fe:ed (de:ad:be:ef:fe:ed)
Source: Dell_1e:6f:59 (50:9a:4c:1e:6f:59)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: 172.17.64.61, Dst: 172.17.100.101
0100 .... = Version: 4
.... 0101 = Header Length: 20 bytes (5)
Differentiated Services Field: 0x00 (DSCP: CS0, ECN: Not-ECT)
Total Length: 37
Identification: 0x4f1e (20254)
Flags: 0x00
...0 0000 0000 0000 = Fragment Offset: 0
Time to Live: 128
Protocol: UDP (17)
Header Checksum: 0x0000 [validation disabled]
[Header checksum status: Unverified]
Source Address: 172.17.64.61
Destination Address: 172.17.100.101
User Datagram Protocol, Src Port: 80, Dst Port: 40001
Source Port: 80
Destination Port: 40001
Length: 17
Checksum: 0xfce7 [unverified]
[Checksum Status: Unverified]
[Stream index: 36]
[Timestamps]
UDP payload (9 bytes)
Data (9 bytes)
0000 68 65 6c 6c 6f 20 75 64 70 hello udp
Data: 68656c6c6f20756470
[Length: 9]