create capacity initializes an encoder with a dynamic table with maximum size capacity. This size is an approximation of the memory overhead in bytes.

See RFC7541§4.1 for more details.

encode_header encoder f header writes an encoded header to the Faraday buffer f.

set_capacity encoder capacity sets encoder's dynamic table size to maximum size capacity. This size is an approximation of the memory overhead in bytes.

See RFC7540§6.5.2 and RFC7541§4.1 for more details.