Server app freezes with Tkinter GUI

[shaf3e]

This is my server script when running it without GUI the start method only it works fine but when running the whole script and I press the start button it just freezes and not responding and nothing appears on the text window

from Tkinter import *
 
import socket
import sys
 
class Application(Frame):
 
    def __init__(self, master):
 
        Frame.__init__(self, master)
        self.grid()
        self.create_widgets()
 
    def create_widgets(self):
 
        self.text = Text(self, width = 35, height = 5, wrap = WORD)
        self.text.grid(row = 0, column = 0, columnspan = 2, sticky = W)
 
        self.submit_button = Button(self, text='start', command = self.start)
        self.submit_button.grid(row = 2, column = 0, sticky = W)
 
    def start(self):
 
        self.s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.text.insert(0.0, 'Server started!\n' )
        self.s.bind(('',1090))
        self.s.listen(10)
        sc, address = self.s.accept()
        self.text.insert(0.0, 'Got conn from', address )
        while True:
 
            '''msg = sc.recv(1024)
            print address, ' >> ', msg
            msg = raw_input('SERVER >> ')
            sc.send(msg)'''
            i=1
            f = open('file_'+ str(i)+".txt",'wb') #open in binary
            i=i+1
            while (True):       
                l = sc.recv(1024)
                while (l):
                    print l 
                    f.write(l) 
                    f.flush()
                    l = sc.recv(1024)
            f.close()
 
            sc.close()
 
        #s.close()
 
 
root = Tk()
root.title("Server")
root.geometry("500x250")
app = Application(root)
 
root.mainloop()

[dwblas]

Add a print statement at the beginning of start() and another after the socket statement to see if that is the hang-up, as the Tkinter code appears to work ok. Note that the inner "while True" statement never exits so the outher while True will only execute once.

[dwblas]

It appears that Tkinter requires an update_idletasks() because of all of the other processing going on.

         self.text.insert(0.0, 'Server started!\n' )
         self.text.update_idletasks()
 
         self.text.insert(0.0, 'Got conn from', address )
         self.text.update_idletasks() 

The hang-up now appears to be this line

         sc, address = self.s.accept()

[shaf3e]

i am new to socket programming ana i saw that the problem with accepting the connection but it was working well before buiding the GUI i dont know what to do