annotate src/event/quic/ngx_event_quic_protection.h @ 9045:c6580dce98a8 quic

QUIC: fixed triggering stream read event (ticket #2409). If a client packet carrying a stream data frame is not acked due to packet loss, the stream data is retransmitted later by client. It's also possible that the retransmitted range is bigger than before due to more stream data being available by then. If the original data was read out by the application, there would be no read event triggered by the retransmitted frame, even though it contains new data.
author Roman Arutyunyan <arut@nginx.com>
date Wed, 23 Nov 2022 18:50:26 +0400
parents e50f77a2d0b0
children 7da4791e0264
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1
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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5
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7 #ifndef _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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14 #include <ngx_event_quic_transport.h>
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17 #define NGX_QUIC_ENCRYPTION_LAST ((ssl_encryption_application) + 1)
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19 /* RFC 5116, 5.1 and RFC 8439, 2.3 for all supported ciphers */
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20 #define NGX_QUIC_IV_LEN 12
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22 /* largest hash used in TLS is SHA-384 */
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23 #define NGX_QUIC_MAX_MD_SIZE 48
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25
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26 typedef struct {
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27 size_t len;
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28 u_char data[NGX_QUIC_MAX_MD_SIZE];
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29 } ngx_quic_md_t;
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31
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32 typedef struct {
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33 size_t len;
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34 u_char data[NGX_QUIC_IV_LEN];
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35 } ngx_quic_iv_t;
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37
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38 typedef struct {
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39 ngx_quic_md_t secret;
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40 ngx_quic_md_t key;
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41 ngx_quic_iv_t iv;
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42 ngx_quic_md_t hp;
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43 } ngx_quic_secret_t;
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46 typedef struct {
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47 ngx_quic_secret_t client;
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48 ngx_quic_secret_t server;
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49 } ngx_quic_secrets_t;
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52 struct ngx_quic_keys_s {
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53 ngx_quic_secrets_t secrets[NGX_QUIC_ENCRYPTION_LAST];
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54 ngx_quic_secrets_t next_key;
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55 ngx_uint_t cipher;
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56 };
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59 ngx_int_t ngx_quic_keys_set_initial_secret(ngx_quic_keys_t *keys,
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60 ngx_str_t *secret, ngx_log_t *log);
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61 ngx_int_t ngx_quic_keys_set_encryption_secret(ngx_log_t *log,
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62 ngx_uint_t is_write, ngx_quic_keys_t *keys,
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63 enum ssl_encryption_level_t level, const SSL_CIPHER *cipher,
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64 const uint8_t *secret, size_t secret_len);
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65 ngx_uint_t ngx_quic_keys_available(ngx_quic_keys_t *keys,
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66 enum ssl_encryption_level_t level);
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67 void ngx_quic_keys_discard(ngx_quic_keys_t *keys,
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68 enum ssl_encryption_level_t level);
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69 void ngx_quic_keys_switch(ngx_connection_t *c, ngx_quic_keys_t *keys);
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70 ngx_int_t ngx_quic_keys_update(ngx_connection_t *c, ngx_quic_keys_t *keys);
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71 ngx_int_t ngx_quic_encrypt(ngx_quic_header_t *pkt, ngx_str_t *res);
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72 ngx_int_t ngx_quic_decrypt(ngx_quic_header_t *pkt, uint64_t *largest_pn);
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75 #endif /* _NGX_EVENT_QUIC_PROTECTION_H_INCLUDED_ */