当发生损坏的管道异常时,我在检测到损坏的套接字时遇到问题。请参阅以下代码以获取示例:
服务器:
import errno, select, socket, time, SocketServer
class MetaServer(object):
def __init__(self):
self.server = Server(None, Handler, bind_and_activate=False)
def run(self, sock, addr):
rfile = sock.makefile('rb', 1)
self.server.process_request(sock, addr)
while 1:
r, _, _ = select.select([rfile], [], [], 1.0)
if r:
print 'Got %s' % rfile.readline()
else:
print 'nothing to read'
class Server(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
allow_reuse_address = True
daemon_threads = True
class Handler(SocketServer.StreamRequestHandler):
def handle(self):
print 'connected!'
try:
while 1:
self.wfile.write('testing...')
time.sleep(1)
except socket.error as e:
if e.errno == errno.EPIPE:
print 'Broken pipe!'
self.finish()
self.request.close()
if __name__ == '__main__':
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('127.0.0.1', 8081))
s.listen(5)
ms = MetaServer()
while 1:
client, address = s.accept()
ms.run(client, address)
客户:
import select, socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('127.0.0.1', 8081))
while 1:
r, _, _ = select.select([s], [], [], 1.0)
if not r:
continue
msg = s.recv(1024)
print 'Got %s' % (msg,)
现在,如果我运行服务器和客户端,一切都很好,我每秒钟都会收到“无法读取”消息。一旦我将CTRL-C移出客户端,服务器就会疯狂并开始从应该是一个被破坏的套接字“读取”,抛弃大量的“获取”消息。
有没有办法在MetaServer.run()
函数中检测这个损坏的套接字以避免上述行为?
答案 0 :(得分:3)
是的,这是文档中没有的东西,但是旧的Un * x行为:当你得到一个空字符串时需要中止。