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annotate src/event/quic/ngx_event_quic_frames.h @ 9299:2706b60dc225 default tip

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Core: error logging rate limiting. With this change, error logging to files can be rate-limited with the "rate=" parameter. The parameter specifies allowed log messages rate to a particular file (per worker), in messages per second (m/s). By default, "rate=1000m/s" is used. Rate limiting is implemented using the "leaky bucket" method, similarly to the limit_req module. Maximum burst size is set to the number of log messages per second for each severity level, so "error" messages are logged even if the rate limit is hit by "info" messages (but not vice versa). When the limit is reached for a particular level, the "too many log messages, limiting" message is logged at this level. If debug logging is enabled, either for the particular log file or for the particular connection, rate limiting is not used.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 25 Jun 2024 22:58:56 +0300
parents 3c98fa8fef6f
children
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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_FRAMES_H_INCLUDED_
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8 #define _NGX_EVENT_QUIC_FRAMES_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 typedef ngx_int_t (*ngx_quic_frame_handler_pt)(ngx_connection_t *c,
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16 ngx_quic_frame_t *frame, void *data);
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19 ngx_quic_frame_t *ngx_quic_alloc_frame(ngx_connection_t *c);
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20 void ngx_quic_free_frame(ngx_connection_t *c, ngx_quic_frame_t *frame);
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21 void ngx_quic_free_frames(ngx_connection_t *c, ngx_queue_t *frames);
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22 void ngx_quic_queue_frame(ngx_quic_connection_t *qc, ngx_quic_frame_t *frame);
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23 ngx_int_t ngx_quic_split_frame(ngx_connection_t *c, ngx_quic_frame_t *f,
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24 size_t len);
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25
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26 ngx_chain_t *ngx_quic_alloc_chain(ngx_connection_t *c);
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27 void ngx_quic_free_chain(ngx_connection_t *c, ngx_chain_t *in);
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29 ngx_chain_t *ngx_quic_copy_buffer(ngx_connection_t *c, u_char *data,
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30 size_t len);
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31 ngx_chain_t *ngx_quic_read_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb,
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32 uint64_t limit);
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33 ngx_chain_t *ngx_quic_write_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb,
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34 ngx_chain_t *in, uint64_t limit, uint64_t offset);
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35 void ngx_quic_skip_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb,
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36 uint64_t offset);
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37 void ngx_quic_free_buffer(ngx_connection_t *c, ngx_quic_buffer_t *qb);
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39 #if (NGX_DEBUG)
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40 void ngx_quic_log_frame(ngx_log_t *log, ngx_quic_frame_t *f, ngx_uint_t tx);
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41 #else
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42 #define ngx_quic_log_frame(log, f, tx)
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43 #endif
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45 #endif /* _NGX_EVENT_QUIC_FRAMES_H_INCLUDED_ */