Python Server not working in Linux - linux

Question

A while ago I wrote a server in python 3.6 on a windows 7 machine, and it worked there. I have since transfered the server to linux mint 18.3 Sylvia with Cinnamon desktop. For some reason, the program is not accepting connections, even after changing the port from 80 to 8080. I determined this from using internet explorer on another machine to diagnose network issues (yes I did put :8080 after the ip address). My question is: what exactly should I do in order to make the program usable on the linux machine?
Here is the code:
import socket
import sys
import os
from _thread import *
def filterHTML(data):
count = 0
word = ""
loc = data.find("HTTP")
req = ""
while True:
if (data[count] == ' '):
count+=1
break
else:
req+=data[count]
count+=1
while True:
if (count == loc - 1):
break
elif (data[count] == '?'):
break
else:
word+=data[count]
count+=1
return req, word
def getEnd(data):
lng = len(data)
location = 0
for i in range(0,lng,1):
if (data[i] == '/'):
location = i
newstring = ""
for e in range(location, lng, 1):
newstring+=data[e]
return newstring
def threaded_client(Connection):
while True:
print("recieving data from client")
try:
data = Connection.recv(4096)
data = data.decode('utf-8')
print(data)
com, param = filterHTML(data)
if (com == "GET"):
end = getEnd(param)
print(param)
if (param == "/"):
sendFileContent(Connection,"text","init.html")
elif (end == "/favicon.ico"):
sendFileContent(Connection,"bin","favicon.bmp")
elif (param == "/main/" or param == "/main"):
sendFileContent(Connection,"text","main.html")
elif (end == "/BSS.png"):
sendFileContent(Connection,"bin","BSS.png")
elif (param == "/Contact/"):
sendFileContent(Connection,"text","contact.html")
elif (param == "/Projects/"):
sendFileContent(Connection,"text","projects.html")
elif (end == "/cypher.png"):
sendFileContent(Connection,"bin","cypher.png")
elif (end == "/stockOrder.png"):
sendFileContent(Connection,"bin","stockOrder.png")
elif (end == "/website.png"):
sendFileContent(Connection,"bin","website.png")
elif (end == "/background.png"):
sendFileContent(Connection,"bin","background.png")
else:
sendFileContent(Connection,"text","404.html")
Connection.close()
return
except error:
print("client " + str(Connection) + "timed out")
Connection.close()
def sendFileContent(connection,ftype,fileName):
if (ftype == "text"):
try:
FileToSend = open(fileName, "r")
FileContent = FileToSend.read()
connection.sendall(str.encode((FileContent)))
FileToSend.close()
return
except Exception as e:
print("an error occured\n" + str(e))
return
elif (ftype == "bin"):
try:
FileToSend = open(fileName, "rb")
FileContent= FileToSend.read()
connection.sendall((FileContent))
FileToSend.close()
except Exception as e:
print("an error occured\n" + str(e))
return
else:
print("a thingir happened, don't know what")
connection = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = socket.gethostname()
print("socket created successfully")
try:
connection.bind((host, 8080))
print("bind complete")
except socket.error:
print(str(socket.error))
connection.listen(128)
count = 0
while True:
clientConnection, address = connection.accept()
clientConnection.settimeout(60.0*5.0)
print("connected to: " + address[0] + " : " + str(address[1]))
count+=1
print(str(count) + " clients so far")
start_new_thread(threaded_client, (clientConnection,))

Answer 1

I don't have enough points to comment, so:
Make sure that your ports are open on your Linux device. First check if you have a firewall up and running by sudo ufw status. If it's up allow the ports you want to access by sudo ufw allow 8080 or sudo ufw allow 80.
As soon as your ports are open and accessible, there's no reason for it not to run.
I hope this helps.