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+--- Thread: Socket - Keep Alive? (/thread-6423.html)
Socket - Keep Alive? - CDitty - Nov-21-2017
I am trying to write a small python program that just sends data out over a port socket. I can get it to work when there is a server that is listening, but I can't get it to work when there is nothing there. I've tried searching but haven't found anything that will work without a receiving server.
I am basically looking for a way that will attempt to connect, if it fails, wait X and try again.
Anyone have any suggestions or examples they can share?
This is what I have so far.....
Quote:import socket
import time
import string
host = '192.168.1.11' #socket.gethostname()
port = 9999
BUFFER_SIZE = 2000
socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
def testConnection(host, port, socket):
connected = False
while connected == False:
try:
socket.connect((host, port))
connected = True
socket.send("Hello")
except Exception as e:
print ("Exception is %s" % (e))
time.sleep(2)
connected = False
testConnection(host, port, socket)
And this is what I'm getting in return.
Quote:Exception is [Errno 61] Connection refused
Exception is [Errno 22] Invalid argument
RE: Socket - Keep Alive? - heiner55 - Nov-22-2017
See https://python-forum.io/Thread-File-Transfer
RE: Socket - Keep Alive? - Windspar - Nov-28-2017
1. Use python code tags over quote.
Sound like server isn't listen.
String isn't encode
example
import socket
import threading
def server(host, port):
print("Enter Server")
BUFFER_SIZE = 1024
server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server_socket.bind((host, port))
server_socket.listen(1)
c_sock, addr = server_socket.accept()
data = c_sock.recv(BUFFER_SIZE)
print("Server recieve", data.decode())
def client(host, port):
print("Enter Client")
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect((host, port))
client_socket.send("Hello".encode())
def main():
host = '0.0.0.0'
port = 9012
myserver = threading.Thread(target=server, args=(host, port))
myserver.start()
myclient = threading.Thread(target=client, args=(host, port))
myclient.start()
myserver.join()
myclient.join()
if __name__ == '__main__':
main()
RE: Socket - Keep Alive? - wavic - Nov-29-2017
Run it on the local host to try it. If it works check the router settings.