tco.py 文件源码

def send(self, message, flags):
        with self.send_token:
            if not self.state.ESTABLISHED:
                self.err("send() in socket state {0}".format(self.state))
                if self.state.CLOSE_WAIT:
                    raise err.Error(errno.EPIPE)
                raise err.Error(errno.ENOTCONN)
            if len(message) > self.send_miu:
                raise err.Error(errno.EMSGSIZE)
            while self.send_window_slots == 0 and self.state.ESTABLISHED:
                if flags & nfc.llcp.MSG_DONTWAIT:
                    raise err.Error(errno.EWOULDBLOCK)
                self.log("waiting on busy send window")
                self.send_token.wait()
            self.log("send {0} byte on {1}".format(len(message), str(self)))
            if self.state.ESTABLISHED:
                send_pdu = pdu.Information(self.peer, self.addr, data=message)
                send_pdu.ns = self.send_cnt
                self.send_cnt = (self.send_cnt + 1) % 16
                super(DataLinkConnection, self).send(send_pdu, flags)
            return self.state.ESTABLISHED is True