Struct NNFrame 

pub struct NNFrame {
    pub header: NNHeader,
    pub body: Bytes,
    pub ex_head: Bytes,
}

内部协议帧

Fields

header: NNHeader

body: Bytes

ex_head: Bytes

服务端下发的扩展头原始字节（FtnnExtendHead protobuf） 关键用途：body 为空时，服务端通常把业务错误塞在 ex_head.err_info 里

Implementations

impl NNFrame

pub fn parse_ex_head_error(&self) -> Option<ExHeadErrorInfo>

从 ex_head 里提取 err_info（field 5 = ErrorInfo nested message） 如果 ex_head 为空或没 err_info 字段，返回 None。

Trait Implementations

impl Clone for NNFrame

fn clone(&self) -> NNFrame

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NNFrame

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Encoder<NNFrame> for NNCodec

type Error = FutuError

The type of encoding errors.

fn encode( &mut self, item: NNFrame, dst: &mut BytesMut, ) -> Result<(), Self::Error>

Encodes a frame into the buffer provided.