eintr.py

import signal
import socket
import threading
import time
try:
    import socketserver
except ImportError:
    import SocketServer as socketserver


class SilentHandler(socketserver.StreamRequestHandler):
    def handle(self):
        time.sleep(1000)


def handle_alarm(sig, frame):
    print("signal received")


signal.signal(signal.SIGALRM, handle_alarm)


server = socketserver.TCPServer(('localhost', 0), SilentHandler)
thread = threading.Thread(target=server.serve_forever)
thread.daemon = True
thread.start()

client = socket.socket()
client.connect(server.server_address)

signal.alarm(1)

try:
    client.recv(4)
except socket.error as e:
    print(e)


signal.alarm(1)

data = b'x' * 10000
try:
    while True:
        client.sendall(data)
        print('sent')
except socket.error as e:
    print(e)