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#!/usr/bin/env python
#coding=utf8
import ssl
import time
import socket
import select
from sjrpc.core import RpcConnection, ConnectionManager
class SimpleRpcServer(ConnectionManager):
'''
A simple RPC Server that wait for new connections and dispatch messages
from thoses are already established.
:param sock: the :class:`socket` object to bind to the server connection
:param default_handler: the default handler to bind to the new client
connections
'''
def __init__(self, sock, default_handler=None, on_disconnect=None):
super(SimpleRpcServer, self).__init__()
sock.setblocking(False)
self._listening_sock = sock
self._poll.register(sock)
self._clients = {}
self._default_handler = default_handler
self._on_disconnect = on_disconnect
def _accept_connection(self):
return self._listening_sock.accept()
def register(self, connection):
super(SimpleRpcServer, self).register(connection)
self._clients[connection.get_fd()] = connection
def shutdown(self):
super(SimpleRpcServer, self).shutdown()
time.sleep(ConnectionManager.POLL_TIMEOUT)
for connection in self._clients.values():
connection.shutdown(self._on_disconnect)
self._listening_sock.close()
def all_connections(self):
return set(self._clients.values())
def handle_event(self, fd, event):
if fd == self._listening_sock.fileno():
# Event concerns the listening socket:
if event & select.EPOLLIN:
sock, address = self._accept_connection()
sock.setblocking(False)
connection = RpcConnection(sock, self,
handler=self._default_handler)
self.register(connection)
else:
# Event concerns a client socket:
connection = self._clients[fd]
if event & select.EPOLLIN:
# Data are ready to be readed on socket
try:
connection.receive()
except socket.error as err:
connection.shutdown(self._on_disconnect)
del self._clients[fd]
if event & select.EPOLLOUT:
# Data are ready to be written on socket
try:
connection.send()
except socket.error as err:
connection.shutdown(self._on_disconnect)
del self._clients[fd]
if event & select.EPOLLHUP:
connection.shutdown(self._on_disconnect)
del self._clients[fd]
class SimpleSslRpcServer(SimpleRpcServer):
'''
A simple RPC Server that wait for new connections and dispatch messages
from thoses are already established. This server version enable SSL on
client sockets.
:param sock: the :class:`socket` object to bind to the server connection
:param default_handler: the default handler to bind to the new client
connections
'''
def __init__(self, sock, certfile=None, keyfile=None, **kwargs):
self._certfile = certfile
self._keyfile = keyfile
super(SimpleSslRpcServer, self).__init__(sock, **kwargs)
def _accept_connection(self):
sock, address = self._listening_sock.accept()
sslsock = ssl.wrap_socket(sock, server_side=True, keyfile=self._keyfile,
certfile=self._certfile,
ssl_version=ssl.PROTOCOL_TLSv1,
do_handshake_on_connect=True)
return sslsock, address