A simple Python script to receive messages from a client over Bluetooth using PyBluez (with Python 2).

pyBluezServer.py

"""
A simple Python script to receive messages from a client over 
Bluetooth using PyBluez (with Python 2). 
"""

import bluetooth 

hostMACAddress = '00:1f:e1:dd:08:3d' # The MAC address of a Bluetooth adapter on the server. The server might have multiple Bluetooth adapters. 
port = 3 
backlog = 1
size = 1024
s = bluetooth.BluetoothSocket(bluetooth.RFCOMM)
s.bind((hostMACAddress, port))
s.listen(backlog)
try:
	client, clientInfo = s.accept()
	while 1:
		data = client.recv(size)
		if data:
			print(data)
			client.send(data) # Echo back to client
except:	
	print("Closing socket")
	client.close()
	s.close()

I have the problem when I send a file with the size 12kb only 1kb is being received even when i set the buffer limit much above

You need to make an array of bytes and send it by 1kb then merge it on the receiver

@detend3nKer you should post in on StackOverflow