Simple Network Communication between Python and LabVIEW

# first of all import the socket library
import socket

# next create a socket object
s = socket.socket()
print ("Socket successfully created")

# reserve a port on your computer in our case it is 40674 but it can be anything
port = 40674

# Next bind to the port - we have not typed any ip in the ip field
# instead we have inputted an empty string this makes the server listen to requests
# coming from other computers on the network
s.bind(('', port))
print ("socket binded to %s" %(port))

# put the socket into listening mode
s.listen(5)    
print ("socket is listening")

# a forever loop until we interrupt it or an error occurs
while True:

    # Establish connection with client.
    c, addr = s.accept()
    print ('Got connection from', addr )

    # send a thank you message to the client.
    c.send(b'Thank you for connecting')

    # Close the connection with the client
    c.close()

# Import socket module
import socket

# Create a socket object
s = socket.socket()

# Define the port on which you want to connect
port = 40674

# connect to the server on local computer
s.connect(('127.0.0.1', port))

# receive data from the server
print(s.recv(24))

# close the connection
s.close()

import socket
import struct

def send_string(sock, message):
    # Encode the string to bytes
    message_bytes = message.encode('ascii') #utf-8
    
    # Get the length of the message
    message_length = len(message_bytes)
    
    # Pack the length into 4 bytes (big-endian unsigned integer)
    length_prefix = struct.pack('>I', message_length)
    
    # Combine the length prefix and the message
    full_message = length_prefix + message_bytes
    
    # Send the full message
    sock.sendall(full_message)

# Example usage
HOST = '127.0.0.1'  # The server's hostname or IP address
PORT = 40674        # The port used by the server

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    send_string(s, "Hello, World!") # 13 bytes
    send_string(s, "Hello, LabVIEW!") # 14 bytes
    send_string(s, "Stop") # 4 bytes