server.py

from socket import *
import json
import struct
class ReceivingClient():
    def __init__(self,server_port):
        self.server_port = server_port
        self.server_socket = socket(AF_INET, SOCK_STREAM)
        self.server_socket.bind(("", self.server_port))
        self.server_socket.listen(1)

    def create_connection_socket(self):
        self.connection_socket,self.address = self.server_socket.accept()
        return self.connection_socket

    def _recv_header(self):
        """ Deal with Header/Meta data """
        header_size = self.connection_socket.recv(4)
        if not header_size:
            return {}
        json_header = self.connection_socket.recv(struct.unpack("!I", header_size)[0])
        return json.loads(json_header)

    def recv_file(self):
        """ recieve file data """
        recieved_bytes = b''
        file_type = None

        header = self._recv_header()
        file_type = header["file_type"]
        kb = header["file_size"]
        for i in range(kb):
            recieved_bytes += self.connection_socket.recv(1024)
        return (recieved_bytes,file_type)


    def save_file(self,recieved_bytes,file_path):
        with open(f"{file_path}", 'wb') as file:
             file.write(recieved_bytes)
        self.connection_socket.close()

    def close_connection(self):
        self.server_socket.close()