Struct RpcMetadata 

pub struct RpcMetadata { /* private fields */ }

Metadata attached to a single high-level client RPC.

Per-call values take precedence over metadata configured on the connection.

Implementations

impl RpcMetadata

pub fn new() -> Self

Create empty RPC metadata.

pub fn insert( &mut self, key: impl Into<String>, value: impl Into<String>, ) -> Result<Option<String>, RpcMetadataError>

Insert an ASCII metadata value, returning the previous value for the key.

pub fn insert_binary( &mut self, key: impl Into<String>, value: impl Into<Vec<u8>>, ) -> Result<Option<Vec<u8>>, RpcMetadataError>

Insert a binary metadata value, returning the previous value for the key.

pub fn get_ascii(&self, key: &str) -> Option<&str>

Get an ASCII metadata value.

pub fn get_binary(&self, key: &str) -> Option<Vec<u8>>

Get a binary metadata value.

pub fn remove_ascii(&mut self, key: &str) -> Option<String>

Remove an ASCII metadata value.

pub fn remove_binary(&mut self, key: &str) -> Option<Vec<u8>>

Remove a binary metadata value.

pub fn ascii(&self) -> impl Iterator<Item = (&str, &str)>

Iterate over ASCII metadata values.

pub fn binary(&self) -> impl Iterator<Item = (&str, Vec<u8>)>

Iterate over binary metadata values.

Trait Implementations

impl Clone for RpcMetadata

fn clone(&self) -> RpcMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RpcMetadata

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

Formats the value using the given formatter.

impl Default for RpcMetadata

fn default() -> RpcMetadata

Returns the “default value” for a type.

impl Eq for RpcMetadata

impl PartialEq for RpcMetadata

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.