#!/usr/bin/env python3

import struct

import socket

import sys

# --- constants ---

HOST = '' # (local or external) address IP of remote server

PORT = 8000 # (local or external) port of remote server

try:

# --- create socket ---

print('[DEBUG] create socket')

#s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s = socket.socket() # default: socket.AF_INET, socket.SOCK_STREAM

# --- connect to server ---

print('[DEBUG] connect:', (HOST, PORT))

s.connect((HOST, PORT)) # one tuple (HOST, PORT), not two arguments

# --- send data ---

print('[DEBUG] send')

text = 'Hello World of Sockets in Python'

print('[DEBUG] text:', text)

# convert text to bytes

data = text.encode('utf-8')

print('[DEBUG] data:', data)

# get data length

length = len(data)

print('[DEBUG] length:', length)

# convert `length` int to 4 bytes

length = struct.pack('!i', length)

print('[DEBUG] length as 4 bytes:', length)

# send `length` as 4 bytes

s.send(length)

# send data as bytes

s.send(data)

except Exception as ex:

print(ex)

except KeyboardInterrupt as ex:

print(ex)

except:

print(sys.exc_info())

finally:

# --- close socket ---

print('[DEBUG] close socket')

s.close()