ioloop.py 文件源码

def send(self) -> int:
        """Send outgoing data
        """

        with self._write_lock:
            while len(self.outbuffer) > 0:
                try:
                    sent = self.sock.send(self.outbuffer)
                    self.outbuffer = self.outbuffer[sent:]
                except socket.error as error:
                    if error.args[0] == errno.EAGAIN:
                        time.sleep(0.1)
                    elif error.args[0] in (
                        errno.ECONNRESET, errno.ENOTCONN, errno.ESHUTDOWN,
                        errno.ECONNABORTED, errno.EPIPE
                    ):
                        self.close()
                        return 0
                    elif os.name == 'posix':
                        # Windows doesn't seems to have EBADFD
                        if sys.platform == 'darwin':
                            # OS X uses EBADF as EBADFD. why? no idea asks Tim
                            if error.args[0] == errno.EBADF:
                                self.close()
                                return 0
                        else:
                            if error.args[0] == errno.EBADFD:
                                self.close()
                                return 0
                        raise
                    else:
                        raise