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//usr/include/openssl/quic.h

/*
 * Copyright 2022-2025 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef OPENSSL_QUIC_H
#define OPENSSL_QUIC_H
#pragma once

#include <openssl/macros.h>
#include <openssl/ssl.h>

#ifndef OPENSSL_NO_QUIC

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Method used for non-thread-assisted QUIC client operation.
 */
__owur const SSL_METHOD *OSSL_QUIC_client_method(void);

/*
 * Method used for thread-assisted QUIC client operation.
 */
__owur const SSL_METHOD *OSSL_QUIC_client_thread_method(void);

/*
 * QUIC transport error codes (RFC 9000 s. 20.1)
 */
#define OSSL_QUIC_ERR_NO_ERROR 0x00
#define OSSL_QUIC_ERR_INTERNAL_ERROR 0x01
#define OSSL_QUIC_ERR_CONNECTION_REFUSED 0x02
#define OSSL_QUIC_ERR_FLOW_CONTROL_ERROR 0x03
#define OSSL_QUIC_ERR_STREAM_LIMIT_ERROR 0x04
#define OSSL_QUIC_ERR_STREAM_STATE_ERROR 0x05
#define OSSL_QUIC_ERR_FINAL_SIZE_ERROR 0x06
#define OSSL_QUIC_ERR_FRAME_ENCODING_ERROR 0x07
#define OSSL_QUIC_ERR_TRANSPORT_PARAMETER_ERROR 0x08
#define OSSL_QUIC_ERR_CONNECTION_ID_LIMIT_ERROR 0x09
#define OSSL_QUIC_ERR_PROTOCOL_VIOLATION 0x0A
#define OSSL_QUIC_ERR_INVALID_TOKEN 0x0B
#define OSSL_QUIC_ERR_APPLICATION_ERROR 0x0C
#define OSSL_QUIC_ERR_CRYPTO_BUFFER_EXCEEDED 0x0D
#define OSSL_QUIC_ERR_KEY_UPDATE_ERROR 0x0E
#define OSSL_QUIC_ERR_AEAD_LIMIT_REACHED 0x0F
#define OSSL_QUIC_ERR_NO_VIABLE_PATH 0x10

/* Inclusive range for handshake-specific errors. */
#define OSSL_QUIC_ERR_CRYPTO_ERR_BEGIN 0x0100
#define OSSL_QUIC_ERR_CRYPTO_ERR_END 0x01FF

#define OSSL_QUIC_ERR_CRYPTO_ERR(X) \
    (OSSL_QUIC_ERR_CRYPTO_ERR_BEGIN + (X))

/* Local errors. */
#define OSSL_QUIC_LOCAL_ERR_IDLE_TIMEOUT \
    ((uint64_t)0xFFFFFFFFFFFFFFFFULL)

/*
 * Method used for QUIC server operation.
 */
__owur const SSL_METHOD *OSSL_QUIC_server_method(void);

#ifdef __cplusplus
}
#endif

#endif /* OPENSSL_NO_QUIC */
#endif