Exception socket error 10054

i am trying to set up communication with an ethernet device connected to my computer. Connection seems to work ok, when i connect the socket to the device’s IP address and port, but when I try to send a command to the device, it returns the [error 10054 — connection was forcibly interrupted by the remote host]. The code I have so far is like this:

import socket
import time
import logging



logging.basicConfig(filename='conn.txt', filemode='w')


logging.warning('Starting...')
address = ('192.168.1.23', 23)
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)


ok = soc.connect_ex(address)


if ok == 0:
    logging.warning('Connected to device ' + str(ok))
else:
    logging.warning('Connection failed ' + str(ok))



### send at command
command = 'AT+SENSOR_IDS'
cmd_to_send = command + 'rn'
cmd_to_send = cmd_to_send.encode('ascii')
logging.warning('Sending at command')

soc.sendall(cmd_to_send)
logging.warning('at command sent, waiting for echo')


# read echo
echo = soc.recv()
logging.warning('received echo: ' + echo)

print('finished')

When i try to «reconnect» with another soc.connect_ex(address), it tells me that the socket is in use.

——

EDIT

——

So because I don’t know much about the device thanks to the lack of documentation, I decided on simulating the problem just using an Echo server and a client example on a localhost. I have this code:

Server side:

import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_address = ('localhost', 1001)
s.bind(server_address)

s.listen(1)

# looking for clients
while True:
    print('waiting for connection')
    connection, client_address = s.accept()
    # when client connects
    try:
        print('Connection from %s port %s' % client_address )

        # get all the data and echo it back
        while True:
            data = connection.recv(32)
            print('Received:   ' + str(data))

            if(len(data)==0):
                print('No more data from client')
                break
            else:
                print('sending data to client')

    finally:
        connection.close()

Client side:

import socket

address = ('127.0.0.1', 1001)
soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

ok = soc.connect_ex(address)

try:
    if ok == 0:
        print('Connected to device ' + str(ok))
    else:
        print('Connection failed ' + str(ok))
except Exception as e:
    soc.close()
    print("connection not succesful, error returned :", e)

try:
    cmd_to_send = 'AT+SENSOR_IDSrn'.encode('ascii')
    bytes_sent = soc.sendall(cmd_to_send, address)
    print('Client sent %s bytes' % str(bytes_sent))

    # read echo
    echo = soc.recv()
    print('received echo: ' + echo)
    soc.close()
except:
    try:
        soc.close()
        print('process finished, didn't send at command')
    except:
        print('Process finished socket exception occured')

The problem persists in that way, that the client does not manage to even send the command. It looks like the connection closes just after it has been established. I am new to sockets and I haven’t found any good source for learning about the way how things work with them, only a few basic examples, could somebody help me so that it works at least when simulating on the localhost?

Thank you for your help