Mercurial > hg > nginx-quic

annotate src/event/ngx_event_quic.h @ 7835:2a6e91a1691d quic

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TODOs cleanup in transport. We always generate stream frames that have length. The 'len' member is used during parsing incoming frames and can be safely ignored when generating output.
author Vladimir Homutov <vl@nginx.com>
date Thu, 23 Apr 2020 12:25:00 +0300
parents ad3a6f069498
children 2f900ae486bc
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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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7 #ifndef _NGX_EVENT_QUIC_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_H_INCLUDED_
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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14
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15 #define NGX_QUIC_DRAFT_VERSION 27
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16 #define NGX_QUIC_VERSION (0xff000000 + NGX_QUIC_DRAFT_VERSION)
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18 #define NGX_QUIC_MAX_SHORT_HEADER 25 /* 1 flags + 20 dcid + 4 pn */
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19 #define NGX_QUIC_MAX_LONG_HEADER 56
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20 /* 1 flags + 4 version + 2 x (1 + 20) s/dcid + 4 pn + 4 len + token len */
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21
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22 #define NGX_QUIC_DEFAULT_MAX_PACKET_SIZE 65527
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23 #define NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT 3
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24 #define NGX_QUIC_DEFAULT_MAX_ACK_DELAY 25
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26 #define NGX_QUIC_HARDCODED_PTO 1000 /* 1s, TODO: collect */
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27 #define NGX_QUIC_CC_MIN_INTERVAL 1000 /* 1s */
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28
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29 #define NGX_QUIC_MIN_INITIAL_SIZE 1200
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30
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31 #define NGX_QUIC_STREAM_SERVER_INITIATED 0x01
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32 #define NGX_QUIC_STREAM_UNIDIRECTIONAL 0x02
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33
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34 #define NGX_QUIC_STREAM_BUFSIZE 16384
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35
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36
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37 typedef struct {
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38 /* configurable */
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39 ngx_msec_t max_idle_timeout;
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40 ngx_msec_t max_ack_delay;
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41
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42 size_t max_packet_size;
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43 size_t initial_max_data;
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44 size_t initial_max_stream_data_bidi_local;
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45 size_t initial_max_stream_data_bidi_remote;
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46 size_t initial_max_stream_data_uni;
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47 ngx_uint_t initial_max_streams_bidi;
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48 ngx_uint_t initial_max_streams_uni;
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49 ngx_uint_t ack_delay_exponent;
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50 ngx_uint_t disable_active_migration;
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51 ngx_uint_t active_connection_id_limit;
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52
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53 /* TODO */
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54 ngx_uint_t original_connection_id;
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55 u_char stateless_reset_token[16];
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56 void *preferred_address;
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57 } ngx_quic_tp_t;
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58
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59
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60 typedef struct {
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61 uint64_t sent;
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62 uint64_t received;
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63 ngx_queue_t frames; /* reorder queue */
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64 size_t total; /* size of buffered data */
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65 } ngx_quic_frames_stream_t;
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66
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67
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68 struct ngx_quic_stream_s {
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69 ngx_rbtree_node_t node;
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70 ngx_connection_t *parent;
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71 ngx_connection_t *c;
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72 uint64_t id;
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73 ngx_buf_t *b;
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74 ngx_quic_frames_stream_t fs;
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75 };
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76
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77
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78 void ngx_quic_run(ngx_connection_t *c, ngx_ssl_t *ssl, ngx_quic_tp_t *tp,
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79 ngx_connection_handler_pt handler);
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80 ngx_connection_t *ngx_quic_create_uni_stream(ngx_connection_t *c);
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81
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82
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83 /********************************* DEBUG *************************************/
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84
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85 #if (NGX_DEBUG)
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86
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87 #define ngx_quic_hexdump(log, fmt, data, len, ...) \
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88 do { \
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89 ngx_int_t m; \
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90 u_char buf[2048]; \
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91 \
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92 if (log->log_level & NGX_LOG_DEBUG_EVENT) { \
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93 m = ngx_hex_dump(buf, (u_char *) data, ngx_min(len, 1024)) - buf; \
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94 ngx_log_debug(NGX_LOG_DEBUG_EVENT, log, 0, \
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95 "%s: " fmt " %*s%s, len: %uz", \
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96 __FUNCTION__, __VA_ARGS__, m, buf, \
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97 len < 2048 ? "" : "...", len); \
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98 } \
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99 } while (0)
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100
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101 #else
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102
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103 #define ngx_quic_hexdump(log, fmt, data, len, ...)
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104
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105 #endif
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106
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107 #define ngx_quic_hexdump0(log, fmt, data, len) \
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108 ngx_quic_hexdump(log, fmt "%s", data, len, "") \
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109
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110
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111 #endif /* _NGX_EVENT_QUIC_H_INCLUDED_ */