test_open_port

import socket
import time

# Initial values to use
retry = 3
delay = 5
timeout = 3


def isOpen(ip, port, timeout):
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(timeout)
    try:
        s.connect((ip, int(port)))
        s.shutdown(socket.SHUT_RDWR)
        return True
    except:
        return False
    finally:
        s.close()


def checkHost(self, root, ip, port, retry, delay, timeout):
    ipup = False
    for i in range(retry):
        if isOpen(ip, port, timeout):
            ipup = True
            break
        else:
            time.sleep(delay)

    if ipup:
        msg = f"{ip} is UP"
        root.mainframe.ResultFrame.result.set(msg)
        if len(msg) > 26:
            # Resize for large URLs
            root.mainframe.ResultFrame.label.configure(foreground="#389319", font=("segoe UI", 12))
        else:
            root.mainframe.ResultFrame.label.configure(foreground="#389319", font=("segoe UI", 14))

    else:
        msg = f"{ip} does NOT appear up"
        root.mainframe.ResultFrame.result.set(msg)
        if len(msg) > 26:
            # Resize for large URLs
            root.mainframe.ResultFrame.label.configure(foreground="#d80020", font=("segoe UI", 10))
        else:
            root.mainframe.ResultFrame.label.configure(foreground="#d80020", font=("segoe UI", 14))
    self.button["state"] = "enabled"