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+---- Thread: [Python] Creating a server that speaks to clients? (/showthread.php?tid=5664318)
Creating a server that speaks to clients? - PGTips - Jul 7, 2017
I want to install a program onto 4 computers that just listens for a command by 1 main server.
How would I go about doing that?
Should I install 4 servers on each PC and my main client program speaks to all of them?
Or
Should I create a client where its just listening for calls from the server (seems more logical). If so, how would I go about doing this?
What I have so far:
client.py
Code
# a simple client socket
import socket
# define socket address
TCP_IP = '127.0.0.1' # ip of the server we want to connect to
TCP_PORT = 5000 # port used for communicating with the server
BUFFER_SIZE = 1024 # buffer size used when receiving data
# create socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print ("Socket created successfully.")
# connect to server
s.connect((TCP_IP, TCP_PORT))
print ("Established connection with the server.")
message = b"I've been sent from the client!"
# send message to the server
s.send(message)
print ("Message sent to server.")
# receive data from server
data = s.recv(BUFFER_SIZE)
print ("Here's the message received from the server:")
print (data)Server.py
Code
# a simple server socket
import socket
# define socket address
TCP_IP = '0.0.0.0' # consider all possible incoming IPs
TCP_PORT = 5000 # port used for communicating with the client
BUFFER_SIZE = 1024 # buffer size used when receiving data
# create socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print ("Socket created successfully.")
# bind socket
s.bind((TCP_IP, TCP_PORT))
# start listening
s.listen(20)
print ("Waiting for a connection...")
# wait for connection
while True:
# accept connection
conn, addr = s.accept()
print ("Connected with " + addr[0] + " " + str(addr[1]))
# get message from client
message = conn.recv(BUFFER_SIZE)
# check that there is a message
if not message:
break
# put some logic here, if needed
server_message = b"I'm the message from the server..."
#server_message = input("Enter message")
#server_message = b(server_message)
# send message to client
conn.send(server_message)
s.close()* - Davian - Jul 7, 2017
Server:
PHP Code
<?php
import socket
clients = []
s = socket.socket()
s.bind(('0.0.0.0', 5000))
s.listen(4)
while len(clients) != 4:
conn, addr = s.accept()
clients.append(conn)
while True:
client = int(raw_input('Client 1/2/3/4: ')) - 1
command = raw_input('Command: ')
clients[client].send(command)
PHP Code
<?php
import socket
s = socket.socket()
s.connect(('0.0.0.0', 5000))
while True:
command = s.recv(1024)
if not command:
break
elif command == whatever:
#Do whatever
* - nizarnizario - Jul 9, 2017
Why don't u install Apache or Nginx in the server, and host a file that commands the clients, it's easier to deal with , you'll just need to learn some web programming language like PHP or Python (Django/Flask/Bottle...)...
* - PGTips - Jul 13, 2017
(Jul 7, 2017 06:32 PM)davian Wrote: Server:
Client:PHP Code
<?php
import socket
clients = []
s = socket.socket()
s.bind(('0.0.0.0', 5000))
s.listen(4)
while len(clients) != 4:
conn, addr = s.accept()
clients.append(conn)
while True:
client = int(raw_input('Client 1/2/3/4: ')) - 1
command = raw_input('Command: ')
clients[client].send(command)
PHP Code
<?php
import socket
s = socket.socket()
s.connect(('0.0.0.0', 5000))
while True:
command = s.recv(1024)
if not command:
break
elif command == whatever:
#Do whatever
Bloody brilliant, I do have 1 question though.
How do I make it so that clients (if the server is up) attempts to connect to them again after X amount of time?
Sometimes the client.py will connect and after 10 minutes it will disconnect, I need them to try to connect all the time if that makes sense?
* - HailPinkFloyd - Jul 13, 2017
I love how you said "bloody brilliant" lmao
* - Davian - Jul 13, 2017
(Jul 13, 2017 09:53 AM)PGTips Wrote: Bloody brilliant, I do have 1 question though.Just wrap client.py with while True 🤝
How do I make it so that clients (if the server is up) attempts to connect to them again after X amount of time?
Sometimes the client.py will connect and after 10 minutes it will disconnect, I need them to try to connect all the time if that makes sense?
PHP Code
<?php
import socket
while True:
s = socket.socket()
s.connect(('0.0.0.0', 5000))
while True:
command = s.recv(1024)
if not command:
break
elif command == whatever:
#Do whatever
s.close()