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1 import gevent
2 from gevent import socket
3 import Tkinter as tk
4
5 class SockLoop(object):
6     def __init__(self, callback):
7         self.callback = callback
8
9     def __call__(self, sock, client):
10         while 1:
11             mes = sock.recv(256)
12             ret = self.callback(client, mes)
13             if ret is not None:
14                 sock.send(ret)
15
16 def socket_server(port, callback):
17     ssock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
18     ssock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
19     ssock.bind(('', port))
20     ssock.listen(5)
21
22     while 1:
23         sock, client = ssock.accept()
24         gevent.spawn(callback, sock, client)
25
26 class App(object):
27     def __init__(self, root):
28         self.greenlet = None
29         self.root = root
30         self._build_window(root)
31         self.root.after(100, self._connect)
32
33     def add_text(self, text):
34         cleaned_string = text.replace('\r', '')
35         self.text.insert(tk.END, cleaned_string)
36
37     def quit(self):
38         self.root.quit()
39
40     def _build_window(self, root):
41         self.frame = tk.Frame(root)
42         self.text = tk.Text(self.frame)
43         self.quit_button = tk.Button(self.frame, text="Quit", command=self.quit)
44         self.text.pack()
45         self.quit_button.pack()
46         self.frame.pack()
47
48     def _connect(self):
49         self.greenlet = gevent.spawn(
50                 socket_server,
51                 8080,
52                 SockLoop(lambda cl, txt: self.add_text("%s: %s" % (cl, txt))))
53         self.gevent_loop_step()
54
55     def gevent_loop_step(self):
56         gevent.sleep()
57         self.root.after_idle(self.gevent_loop_step)
58
59
60 if __name__ == '__main__':
61     root = tk.Tk()
62     app = App(root)
63     root.mainloop()