Server/client basic communication

[ebolisa]

Hi,

I'm trying to learn how to achieve a server/client communication.

So, as a client, I'm injecting a code 'manually' and reading the server's response, but I just cannot get it right.
I appreciate some guidance.

Expected results:

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Connected to: 192.168.1.5 data b'password mypass' info:  password mypass list ['password', 'mypass'] cmd password val mypass data b'update 3' info:  update 3 list ['update', '3'] cmd update val 3 Pin 29: level=0 Pin 29: level=1 192.168.1.5 Disconnected...

Actual results:

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Connected to: 192.168.1.5 data b'password mypass' info:  password mypass list ['password', 'mypass'] cmd password val mypass data b'update, 3' info:  update, 3 list ['update,', '3'] cmd update, val 3   # ... missing relay Pin feedback ...   data b'' 192.168.1.14 Disconnected...

SERVER FUNCTION CODE

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def run(self):     global BUFFER_SIZE     auth = False     sendResponse(self.socket, 'sendcode', '')     while 1:         data = self.socket.recv(BUFFER_SIZE)         print('data',data)         if not data:           break         info = data.decode('UTF-8')         print('info: ', info)         list = info.split()         print('list',list)         cmd = list[0]         print('cmd', cmd)         val = list[1]         print('val',val)           if cmd == 'password':            if val == PASSWORD:               auth = True               sendResponse(self.socket, 'password', getInputs())               connectionsList.append(self.socket)            else:                sendResponse(self.socket, 'password', 'codenotok')                self.socket.shutdown(0)         if auth:            if cmd == 'update':               try:                  index = int(val)                  if 0 <= index < MAX_OUTPUT_PINS:                      threading.Thread(target=flipOutput, args=(self.socket, index)).start()               except ValueError as ex:                  try:                     print('Can not convert value to index.')                  finally:                     ex = None                     del ex               if cmd == 'get' and val == 'status':                 sendResponse(self.socket, 'update', status)            if self.socket in connectionsList:             connectionsList.remove(self.socket)          print(self.ip + ' Disconnected...')

CLIENT CODE

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import socket import time   HOST = '192.168.1.130' PORT = 10000 clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)   try:     clientSocket.connect((HOST, PORT)) except Exception as e:     print("Cannot connect to the server:", e)   print("Connected")   data = 'password mypass' # Send data to server clientSocket.send(data.encode())   # Receive data from server dataFromServer = clientSocket.recv(64) # Print to the console status = dataFromServer.decode() print(status)   # turn on relay 1 data = 'update, 1' # Send data to server clientSocket.send(data.encode()) # Receive data from server dataFromServer = clientSocket.recv(64) # Print to the console status = dataFromServer.decode() print(status)   time.sleep(1)   # <---- CODE STOPS HERE ---->   # turn on relay 2 data = 'update, 2' # Send data to server clientSocket.send(data.encode()) # Receive data from server dataFromServer = clientSocket.recv(64) # Print to the console status = dataFromServer.decode() print(status)   clientSocket.close()

PYCHARM CONSOLE:

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C:\Python39\python.exe C:/SharedFiles/Python/practice/test.py Connected {"ctx": "sendcode", "status": ""} {"ctx": "password", "status": [1, 1, 1, 1, 1, 1, 1, 1]}   Process finished with exit code 0