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/*
* ngtcp2
*
* Copyright (c) 2023 ngtcp2 contributors
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef NGTCP2_TRANSPORT_PARAMS_H
#define NGTCP2_TRANSPORT_PARAMS_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#include <ngtcp2/ngtcp2.h>
/* ngtcp2_transport_param_id is the registry of QUIC transport
parameter ID. */
typedef uint64_t ngtcp2_transport_param_id;
#define NGTCP2_TRANSPORT_PARAM_ORIGINAL_DESTINATION_CONNECTION_ID 0x00
#define NGTCP2_TRANSPORT_PARAM_MAX_IDLE_TIMEOUT 0x01
#define NGTCP2_TRANSPORT_PARAM_STATELESS_RESET_TOKEN 0x02
#define NGTCP2_TRANSPORT_PARAM_MAX_UDP_PAYLOAD_SIZE 0x03
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_DATA 0x04
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_LOCAL 0x05
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_BIDI_REMOTE 0x06
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAM_DATA_UNI 0x07
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_BIDI 0x08
#define NGTCP2_TRANSPORT_PARAM_INITIAL_MAX_STREAMS_UNI 0x09
#define NGTCP2_TRANSPORT_PARAM_ACK_DELAY_EXPONENT 0x0a
#define NGTCP2_TRANSPORT_PARAM_MAX_ACK_DELAY 0x0b
#define NGTCP2_TRANSPORT_PARAM_DISABLE_ACTIVE_MIGRATION 0x0c
#define NGTCP2_TRANSPORT_PARAM_PREFERRED_ADDRESS 0x0d
#define NGTCP2_TRANSPORT_PARAM_ACTIVE_CONNECTION_ID_LIMIT 0x0e
#define NGTCP2_TRANSPORT_PARAM_INITIAL_SOURCE_CONNECTION_ID 0x0f
#define NGTCP2_TRANSPORT_PARAM_RETRY_SOURCE_CONNECTION_ID 0x10
/* https://datatracker.ietf.org/doc/html/rfc9221 */
#define NGTCP2_TRANSPORT_PARAM_MAX_DATAGRAM_FRAME_SIZE 0x20
#define NGTCP2_TRANSPORT_PARAM_GREASE_QUIC_BIT 0x2ab2
/* https://datatracker.ietf.org/doc/html/rfc9368 */
#define NGTCP2_TRANSPORT_PARAM_VERSION_INFORMATION 0x11
/* NGTCP2_MAX_STREAMS is the maximum number of streams. */
#define NGTCP2_MAX_STREAMS (1LL << 60)
/*
* ngtcp2_transport_params_copy_new makes a copy of |src|, and assigns
* it to |*pdest|. If |src| is NULL, NULL is assigned to |*pdest|.
*
* Caller is responsible to call ngtcp2_transport_params_del to free
* the memory assigned to |*pdest|.
*
* This function returns 0 if it succeeds, or one of the following
* negative error codes:
*
* NGTCP2_ERR_NOMEM
* Out of memory.
*/
int ngtcp2_transport_params_copy_new(ngtcp2_transport_params **pdest,
const ngtcp2_transport_params *src,
const ngtcp2_mem *mem);
/*
* ngtcp2_transport_params_convert_to_latest converts |src| of version
* |transport_params_version| to the latest version
* NGTCP2_TRANSPORT_PARAMS_VERSION.
*
* |dest| must point to the latest version. |src| may be the older
* version, and if so, it may have fewer fields. Accessing those
* fields causes undefined behavior.
*
* If |transport_params_version| == NGTCP2_TRANSPORT_PARAMS_VERSION,
* no conversion is made, and |src| is returned. Otherwise, first
* |dest| is initialized via ngtcp2_transport_params_default, and then
* all valid fields in |src| are copied into |dest|. Finally, |dest|
* is returned.
*/
const ngtcp2_transport_params *
ngtcp2_transport_params_convert_to_latest(ngtcp2_transport_params *dest,
int transport_params_version,
const ngtcp2_transport_params *src);
/*
* ngtcp2_transport_params_convert_to_old converts |src| of the latest
* version to |dest| of version |transport_params_version|.
*
* |transport_params_version| must not be the latest version
* NGTCP2_TRANSPORT_PARAMS_VERSION.
*
* |dest| points to the older version, and it may have fewer fields.
* Accessing those fields causes undefined behavior.
*
* This function copies all valid fields in version
* |transport_params_version| from |src| to |dest|.
*/
void ngtcp2_transport_params_convert_to_old(int transport_params_version,
ngtcp2_transport_params *dest,
const ngtcp2_transport_params *src);
#endif /* NGTCP2_TRANSPORT_PARAMS_H */
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