Python里效率最高的服务端,因为借用了系统级的优先权.
严格来说不算是单线程了,借用了系统的线程,让系统去监控client_socket,但程序本身只有一个线程,所以也可以叫单线程.
如果在windows运行包含epoll模块的Python代码时遇到异常是正常的.
epoll只能在Linux使用,我也不清楚为啥windows下的Python标准库会有epoll类.
我把注释去掉,如果有需要注释,我可以把注释版放上来
import socket,re,time,select
def open_file(路径):
try:
client_html_data=open('python_demo/HTTP协议/'+路径,'rb')
except Exception as ret:
return '404错误 页面不存在,请重新输入地址'.encode('gbk')
else:
html_read_data=client_html_data.read()
client_html_data.close()
return html_read_data
def service_client(client_socket,recv_data):
print('客户端发送的请求内容:')
print('-'*50)
print(recv_data)
print('-'*50)
ret_filename_=re.search(r'\w+\.html|favicon.ico',recv_data)
if ret_filename_:
file_name=ret_filename_.group()
file_data=open_file(file_name)
html_header='HTTP/1.1 200 OK\r\n'
html_header+='Content-length:%d\r\n\r\n'%len(file_data)
client_socket.send(html_header.encode('gbk'))
client_socket.send(file_data)
else:
file_data=open_file('index.html')
html_header='HTTP/1.1 200 OK\r\n'
html_header+='Content-length:%d\r\n\r\n'%len(file_data)
client_socket.send(html_header.encode('gbk'))
client_socket.send(file_data)
def main():
tcp_socket_sever=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
tcp_socket_sever.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
tcp_socket_sever.bind(('127.0.0.1',8001))
tcp_socket_sever.listen(128)
tcp_socket_sever.setblocking(False)
print('服务端已运行---------------------------------------')
epl=select.epoll()
epl.register(tcp_socket_sever.fileno(),select.EPOLLIN)
client_socket_list=list()
fd_event_dict=dict()
while True:
fd_event_list=epl.poll()
for fd,event in fd_event_list:
if fd == tcp_socket_sever.fileno():
client_socket,client_addr=tcp_socket_sever.accept()
epl.register(client_socket.fileno(),select.EPOLLIN)
fd_event_dict[client_socket.fileno()]=client_socket
elif event==select.EPOLLIN:
recv_data=fd_event_dict[fd].recv(10240).decode('gbk')
if recv_data :
service_client(fd_event_dict[fd],recv_data)
else:
fd_event_dict[fd].close()
del fd_event_dict[fd]
epl.unregister(fd)
tcp_socket_sever.close()
if __name__ == '__main__':
main()