#!/usr/bin/env python3
# Foundations of Python Network Programming, Third Edition
# https://github.com/brandom-rhodes/fopnp/blob/mn/py3/chapter07/srv_threaded.py
import zen_utils
from threading import Thread
def start_threads(listener, workers=4):
t = (listener, )
for i in range(workers):
Thread(target=zen_utils.accept_connections_forever, args=t).start()
if __name__ == '__main__':
address = zen_utils.parse_command_line('multi-threaded server')
listener = zen_utils.create_srv_socket(address)
start_threads(listener)
#! /usr/bin/env python3
# coding = utf-8
# srv_single.py - 单线程服务器
import zen_utils
if __name__ == '__main__':
address = zen_utils.parse_command_line('simple single-threaded server')
listener = zen_utils.create_srv_socket(address)
zen_utils.accept_connect_forever(listener)
def main():
address = zen_utils.parse_command_line("Multi-threaded server")
listener = zen_utils.create_srv_socket(address)
start_threads(listener)
addresses[sock] = address # 把套接字名在字典做映射
poll_object.register(
sock, select.POLLIN) # 在 fd_set 数据结构中注册当前套接字并设定 poll in 状态
# incoming data: keep receiving until we see the suffix
elif event & select.POLLIN:
more_data = sock.recv(4096)
if not more_data: # end of file
sock.close() # next poll() will POLLNVAL, and thus clean up
continue
data = bytes_received.pop(sock, b'') + more_data
if data.endswith(b'?'):
bytes_to_send[sock] = zen_utils.get_answer(data)
poll_object.modify(sock, select.POLLOUT)
else:
bytes_received[sock] = data
# socket ready to send: keep sending until all bytes are delivered.
elif event & select.POLLOUT:
data = bytes_to_send.pop(sock)
n = sock.send(data)
if n < len(data):
bytes_to_send[sock] = data[n:]
else:
poll_object.modify(sock, select.POLLIN)
if __name__ == '__main__':
address = zen_utils.parse_command_line(
"low-level async server") # 返回一个 tuple 地址
listener = zen_utils.create_srv_socket(address) # 返回一个最大64个的监听套接字
server(listener)
def main():
address = zen_utils.parse_command_line("Multi-threaded server")
listener = zen_utils.create_srv_socket(address)
start_threads(listener)
sockets[sock.fileno()] = sock #将连接套接字添加进sockets字典中
addresses[sock] = address #将连接套接字的远端地址添加进address字典中
poll_object.register(
sock, select.POLLIN) #向poll对象注册sock连接套接字，以监视它的【POLLIN事件】
elif event & select.POLLIN:
more_data = sock.recv(4096)
if not more_data:
sock.close()
continue
data = bytes_received.pop(sock, b'') + more_data
if data.endswith(b'?'):
bytes_to_send[sock] = zen_utils.get_answer(data)
poll_object.modify(sock, select.POLLOUT)
else:
bytes_received[sock] = data
elif event & select.POLLOUT:
data = bytes_to_send.pop(sock)
n = sock.send(data)
if n < len(data):
bytes_to_send[sock] = data[n:]
else:
poll_object.modify(sock, select.POLLIN)
if __name__ == "__main__":
address = zen_utils.parse_command_line('low-level async server')
listener = zen_utils.create_srv_socket(address) #创建并返回一个绑定在指定addr上的监听套接字
serve(listener)