reader.py

readerIP='192.168.230.16'
readerPort=100
import socket
import time
def read_data_with_retry():
    start_time = time.time()
    while time.time() - start_time < 5:
        try:
            student_id = readData()
            if student_id:
                return student_id  # Return the data if successfully read
        except Exception as e:
            pass
    return None  
def readData():
	try:
		s = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.SOL_TCP)
		s.connect((readerIP, readerPort))
	except:
		raise Exception('NetworkError: Socket creation failed.')

	#print("Sending Read request.")
	cmd = bytearray([10, 255, 2, 128, 117])
	s.send(cmd)

	# Reading response
	out = s.recv(2048)
	cnt = out[5]
	#print("Response: " + " ".join("%02x" % b for b in out))

	#print("Sending get tag data request.")
	cmd = bytearray([10, 255, 3, 65, 16, 163])
	s.send(cmd)

	# Reading response
	out = s.recv(2048)
	#print("Response: " + " ".join("%02x" % b for b in out))
	if out[4] > 1:
		raise Exception("WARNING: More than one tags in range!!!")
	elif out[4] == 0:
		raise Exception("WARNING: No tags in range!!!")
	out = out[7:7+12][::-1]
	if out[1] == 0x9e:
		raise Exception("WARNING: Attempted to read empty tag.")
	out = out.decode()
	out = ''.join([c if ord(c) != 0 else '' for c in out])

	
	return out

x=read_data_with_retry()
print(x)