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annotate src/core/ngx_proxy_protocol.h @ 9138:a90f79792b5d

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QUIC: optimized ACK delay. Previously ACK was not generated if max_ack_delay was not yet expired and the number of unacknowledged ack-eliciting packets was less than two, as allowed by RFC 9000 13.2.1-13.2.2. However this only makes sense to avoid sending ACK-only packets, as explained by the RFC: On the other hand, reducing the frequency of packets that carry only acknowledgments reduces packet transmission and processing cost at both endpoints. Now ACK is delayed only if output frame queue is empty. Otherwise ACK is sent immediately, which significantly improves QUIC performance with certain tests.
author Roman Arutyunyan <arut@nginx.com>
date Thu, 27 Jul 2023 16:37:17 +0400
parents 17d6a537fb1b
children
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3a72b1805c52 Added server-side support for PROXY protocol v1 (ticket #355).
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1
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2 /*
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3 * Copyright (C) Roman Arutyunyan
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_PROXY_PROTOCOL_H_INCLUDED_
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9 #define _NGX_PROXY_PROTOCOL_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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17d6a537fb1b Increased maximum read PROXY protocol header size.
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16 #define NGX_PROXY_PROTOCOL_V1_MAX_HEADER 107
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17 #define NGX_PROXY_PROTOCOL_MAX_HEADER 4096
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06b01840bd42 Core: moved PROXY protocol fields out of ngx_connection_t.
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20 struct ngx_proxy_protocol_s {
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21 ngx_str_t src_addr;
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89adf49fe76a Parsing server PROXY protocol address and port (ticket #1206).
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22 ngx_str_t dst_addr;
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23 in_port_t src_port;
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24 in_port_t dst_port;
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cca4c8a715de PROXY protocol v2 TLV variables.
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25 ngx_str_t tlvs;
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26 };
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a420cb1c170b Core: renamed ngx_proxy_protocol_parse to ngx_proxy_protocol_read.
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29 u_char *ngx_proxy_protocol_read(ngx_connection_t *c, u_char *buf,
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30 u_char *last);
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fa663739e115 Stream: client-side PROXY protocol.
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31 u_char *ngx_proxy_protocol_write(ngx_connection_t *c, u_char *buf,
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32 u_char *last);
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33 ngx_int_t ngx_proxy_protocol_get_tlv(ngx_connection_t *c, ngx_str_t *name,
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34 ngx_str_t *value);
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37 #endif /* _NGX_PROXY_PROTOCOL_H_INCLUDED_ */