kcenon::network::protocols::http2::frame_header Struct Reference

HTTP/2 frame header (9 bytes) More...

#include <frame.h>

Collaboration diagram for kcenon::network::protocols::http2::frame_header:

Public Member Functions
auto	serialize () const -> std::vector< uint8_t >
	Serialize frame header to bytes.

Static Public Member Functions
static auto	parse (std::span< const uint8_t > data) -> Result< frame_header >
	Parse frame header from raw bytes.

Public Attributes
uint32_t	length
	Payload length (24 bits)
frame_type	type
	Frame type.
uint8_t	flags
	Frame flags.
uint32_t	stream_id
	Stream identifier (31 bits, MSB reserved)

Detailed Description

HTTP/2 frame header (9 bytes)

Definition at line 53 of file frame.h.

Member Function Documentation

parse()

auto kcenon::network::protocols::http2::frame_header::parse ( std::span< const uint8_t > data ) -> Result<frame_header>

static

Parse frame header from raw bytes.

Parameters

data	Raw byte data (at least 9 bytes)

Returns

Result containing parsed header or error

Definition at line 52 of file frame.cpp.

    {
        if (data.size() < frame_header_size)
        {
            return error_info(1, "Insufficient data for frame header", "http2");
        }
 
        frame_header header;
        header.length = read_uint24_be(data.subspan(0, 3));
        header.type = static_cast<frame_type>(data[3]);
        header.flags = data[4];
        header.stream_id = read_uint32_be(data.subspan(5, 4)) & stream_id_mask;
 
        if (header.length > max_frame_size)
        {
            return error_info(2, "Frame size exceeds maximum allowed", "http2");
        }
 
        return header;
    }

References kcenon::network::protocols::http2::data, flags, length, kcenon::network::protocols::http2::max_frame_size, stream_id, and type.

Referenced by kcenon::network::protocols::http2::frame::parse(), kcenon::network::protocols::http2::http2_client::read_frame(), and kcenon::network::protocols::http2::http2_server_connection::read_frame_header().

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serialize()

auto kcenon::network::protocols::http2::frame_header::serialize

(

)

const -> std::vector<uint8_t>

Serialize frame header to bytes.

Returns

9-byte vector containing serialized header

Definition at line 73 of file frame.cpp.

    {
        std::vector<uint8_t> result(frame_header_size);
 
        auto length_bytes = write_uint24_be(length);
        std::copy(length_bytes.begin(), length_bytes.end(), result.begin());
 
        result[3] = static_cast<uint8_t>(type);
        result[4] = flags;
 
        auto stream_id_bytes = write_uint32_be(stream_id & stream_id_mask);
        std::copy(stream_id_bytes.begin(), stream_id_bytes.end(), result.begin() + 5);
 
        return result;
    }

References flags, length, stream_id, and type.

Referenced by kcenon::network::protocols::http2::frame::serialize().

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Member Data Documentation

flags

uint8_t kcenon::network::protocols::http2::frame_header::flags

Frame flags.

Definition at line 57 of file frame.h.

Referenced by kcenon::network::protocols::http2::data_frame::data_frame(), kcenon::network::protocols::http2::goaway_frame::goaway_frame(), kcenon::network::protocols::http2::headers_frame::headers_frame(), kcenon::network::protocols::http2::ping_frame::is_ack(), kcenon::network::protocols::http2::settings_frame::is_ack(), kcenon::network::protocols::http2::headers_frame::is_end_headers(), kcenon::network::protocols::http2::data_frame::is_end_stream(), kcenon::network::protocols::http2::headers_frame::is_end_stream(), kcenon::network::protocols::http2::data_frame::is_padded(), parse(), kcenon::network::protocols::http2::ping_frame::ping_frame(), kcenon::network::protocols::http2::rst_stream_frame::rst_stream_frame(), serialize(), kcenon::network::protocols::http2::settings_frame::settings_frame(), and kcenon::network::protocols::http2::window_update_frame::window_update_frame().

length

uint32_t kcenon::network::protocols::http2::frame_header::length

Payload length (24 bits)

Definition at line 55 of file frame.h.

Referenced by kcenon::network::protocols::http2::data_frame::data_frame(), kcenon::network::protocols::http2::goaway_frame::goaway_frame(), kcenon::network::protocols::http2::headers_frame::headers_frame(), parse(), kcenon::network::protocols::http2::ping_frame::ping_frame(), kcenon::network::protocols::http2::rst_stream_frame::rst_stream_frame(), serialize(), kcenon::network::protocols::http2::settings_frame::settings_frame(), and kcenon::network::protocols::http2::window_update_frame::window_update_frame().

stream_id

uint32_t kcenon::network::protocols::http2::frame_header::stream_id

Stream identifier (31 bits, MSB reserved)

Definition at line 58 of file frame.h.

Referenced by kcenon::network::protocols::http2::data_frame::data_frame(), kcenon::network::protocols::http2::goaway_frame::goaway_frame(), kcenon::network::protocols::http2::headers_frame::headers_frame(), parse(), kcenon::network::protocols::http2::ping_frame::ping_frame(), kcenon::network::protocols::http2::rst_stream_frame::rst_stream_frame(), serialize(), kcenon::network::protocols::http2::settings_frame::settings_frame(), and kcenon::network::protocols::http2::window_update_frame::window_update_frame().

type

frame_type kcenon::network::protocols::http2::frame_header::type

Frame type.

Definition at line 56 of file frame.h.

Referenced by kcenon::network::protocols::http2::data_frame::data_frame(), kcenon::network::protocols::http2::goaway_frame::goaway_frame(), kcenon::network::protocols::http2::headers_frame::headers_frame(), parse(), kcenon::network::protocols::http2::ping_frame::ping_frame(), kcenon::network::protocols::http2::rst_stream_frame::rst_stream_frame(), serialize(), kcenon::network::protocols::http2::settings_frame::settings_frame(), and kcenon::network::protocols::http2::window_update_frame::window_update_frame().

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The documentation for this struct was generated from the following files:

• src/internal/protocols/http2/frame.h
• src/protocols/http2/frame.cpp