Struct HpackContext

#[repr(C)]
pub struct HpackContext {
    pub dynamics: VecDeque<DynamicHeader>,
    /* private fields */
}

HpackContext contains the state, namely dynamic table and capacity setting, for either the transmitting or receiving part of a connection.

Fields

dynamics: VecDeque<DynamicHeader>

Implementations

impl HpackContext

pub fn new() -> HpackContext

Instantiate an HpackContext with the specification’s default dynamic table capacity of 4,096 octets.

pub fn with_capacity(size: u32) -> HpackContext

Instantiate an HpackContext with a dynamic table capacity of the given number of octets.

pub fn len(&self) -> usize

Number of headers in the context, both static and dynamic.

pub fn capacity(&self) -> u32

The number of octets, with HPACK-specified overhead included, that the dynamic table can hold.

pub fn used(&self) -> u32

The number of octets, with HPACK-specified overhead included, that are used by the dynamic table.

pub fn set_capacity(&mut self, value: u32)

Set the dynamic table’s capacity to the number of HPACK-specified octets given. The value given must be from a SETTINGS frame.

Headers will be evicted from the dynamic table as necessary.

pub fn settings_capacity(&self) -> u32

pub fn resize(&mut self, value: u32) -> Result<(), HpackDecodeError>

Resize the dynamic table’s size to the number of HPACK-specified octets given.

Headers will be evicted from the dynamic table as necessary.

pub fn insert(&mut self, name: &[u8], value: &[u8]) -> bool

Insert a header into the dynamic table.

If the given header exceeds the dynamic table’s size, the insert may only clear the dynamic table without being added. The returned bool indicates whether the header was added or not.

If it was added, it now occupies the first dynamic index.

pub fn header_by_index(&self, idx: usize) -> Option<(&[u8], &[u8])>

Look up a header by a client’s index value.

pub fn header_name_by_index(&self, idx: usize) -> Option<&[u8]>

Look up a header name by a client’s index value.

pub fn get_index(&self, name: &[u8], value: &[u8]) -> u64