python3 TCPServer 按指定长度接收数据

[xiaoyuer5222]

class BaseRequestHandler:

"""Base class for request handler classes.

This class is instantiated for each request to be handled. The
constructor sets the instance variables request, client_address
and server, and then calls the handle() method. To implement a
specific service, all you need to do is to derive a class which
defines a handle() method.

The handle() method can find the request as self.request, the
client address as self.client_address, and the server (in case it
needs access to per-server information) as self.server. Since a
separate instance is created for each request, the handle() method
can define other arbitrary instance variables.

"""

def __init__(self, request, client_address, server):
self.request = request
self.client_address = client_address
self.server = server
self.setup()
try:
self.handle()
finally:
self.finish()

def setup(self):
pass

def handle(self):
pass

def finish(self):
pass
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client发送的数据带长度位，例如：n位长度值 + 数据，handle()接收数据时，先接收n位长度值，再接收指定的数据，n位长度值如何传递到handle里面处理？

[notback]

这种类应该自带 self.recv函数。
lencount = int(self.recv(9).decode("GBK"))
data_recv = self.recv(lencount)