Mercurial > hg > nginx-quic
view src/stream/ngx_stream_quic_module.c @ 8824:81a3429db8b0 quic
HTTP/3: delayed Insert Count Increment instruction.
Sending the instruction is delayed until the end of the current event cycle.
Delaying the instruction is allowed by quic-qpack-21, section 2.2.2.3.
The goal is to reduce the amount of data sent back to client by accumulating
several inserts in one instruction and sometimes not sending the instruction at
all, if Section Acknowledgement was sent just before it.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 27 Jan 2022 12:20:47 +0300 |
parents | 7106a918a277 |
children | dde5cb0205ef |
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/* * Copyright (C) Nginx, Inc. * Copyright (C) Roman Arutyunyan */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> static ngx_int_t ngx_stream_variable_quic(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_stream_quic_add_variables(ngx_conf_t *cf); static void *ngx_stream_quic_create_srv_conf(ngx_conf_t *cf); static char *ngx_stream_quic_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_stream_quic_mtu(ngx_conf_t *cf, void *post, void *data); static char *ngx_stream_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_conf_post_t ngx_stream_quic_mtu_post = { ngx_stream_quic_mtu }; static ngx_command_t ngx_stream_quic_commands[] = { { ngx_string("quic_timeout"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, timeout), NULL }, { ngx_string("quic_mtu"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, mtu), &ngx_stream_quic_mtu_post }, { ngx_string("quic_stream_buffer_size"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, stream_buffer_size), NULL }, { ngx_string("quic_retry"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, retry), NULL }, { ngx_string("quic_gso"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, gso_enabled), NULL }, { ngx_string("quic_host_key"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_FLAG, ngx_stream_quic_host_key, NGX_STREAM_SRV_CONF_OFFSET, 0, NULL }, { ngx_string("quic_active_connection_id_limit"), NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_STREAM_SRV_CONF_OFFSET, offsetof(ngx_quic_conf_t, active_connection_id_limit), NULL }, ngx_null_command }; static ngx_stream_module_t ngx_stream_quic_module_ctx = { ngx_stream_quic_add_variables, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_stream_quic_create_srv_conf, /* create server configuration */ ngx_stream_quic_merge_srv_conf, /* merge server configuration */ }; ngx_module_t ngx_stream_quic_module = { NGX_MODULE_V1, &ngx_stream_quic_module_ctx, /* module context */ ngx_stream_quic_commands, /* module directives */ NGX_STREAM_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_stream_variable_t ngx_stream_quic_vars[] = { { ngx_string("quic"), NULL, ngx_stream_variable_quic, 0, 0, 0 }, ngx_stream_null_variable }; static ngx_str_t ngx_stream_quic_salt = ngx_string("ngx_quic"); static ngx_int_t ngx_stream_variable_quic(ngx_stream_session_t *s, ngx_stream_variable_value_t *v, uintptr_t data) { if (s->connection->quic) { v->len = 4; v->valid = 1; v->no_cacheable = 1; v->not_found = 0; v->data = (u_char *) "quic"; return NGX_OK; } v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_stream_quic_add_variables(ngx_conf_t *cf) { ngx_stream_variable_t *var, *v; for (v = ngx_stream_quic_vars; v->name.len; v++) { var = ngx_stream_add_variable(cf, &v->name, v->flags); if (var == NULL) { return NGX_ERROR; } var->get_handler = v->get_handler; var->data = v->data; } return NGX_OK; } static void * ngx_stream_quic_create_srv_conf(ngx_conf_t *cf) { ngx_quic_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_quic_conf_t)); if (conf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * conf->host_key = { 0, NULL } * conf->stream_close_code = 0; * conf->stream_reject_code_uni = 0; * conf->stream_reject_code_bidi= 0; */ conf->timeout = NGX_CONF_UNSET_MSEC; conf->mtu = NGX_CONF_UNSET_SIZE; conf->stream_buffer_size = NGX_CONF_UNSET_SIZE; conf->max_concurrent_streams_bidi = NGX_CONF_UNSET_UINT; conf->max_concurrent_streams_uni = NGX_CONF_UNSET_UINT; conf->retry = NGX_CONF_UNSET; conf->gso_enabled = NGX_CONF_UNSET; conf->active_connection_id_limit = NGX_CONF_UNSET_UINT; return conf; } static char * ngx_stream_quic_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_quic_conf_t *prev = parent; ngx_quic_conf_t *conf = child; ngx_stream_ssl_conf_t *scf; ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000); ngx_conf_merge_size_value(conf->mtu, prev->mtu, NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); ngx_conf_merge_uint_value(conf->max_concurrent_streams_bidi, prev->max_concurrent_streams_bidi, 16); ngx_conf_merge_uint_value(conf->max_concurrent_streams_uni, prev->max_concurrent_streams_uni, 3); ngx_conf_merge_value(conf->retry, prev->retry, 0); ngx_conf_merge_value(conf->gso_enabled, prev->gso_enabled, 0); ngx_conf_merge_str_value(conf->host_key, prev->host_key, ""); ngx_conf_merge_uint_value(conf->active_connection_id_limit, conf->active_connection_id_limit, 2); if (conf->host_key.len == 0) { conf->host_key.len = NGX_QUIC_DEFAULT_HOST_KEY_LEN; conf->host_key.data = ngx_palloc(cf->pool, conf->host_key.len); if (conf->host_key.data == NULL) { return NGX_CONF_ERROR; } if (RAND_bytes(conf->host_key.data, NGX_QUIC_DEFAULT_HOST_KEY_LEN) <= 0) { return NGX_CONF_ERROR; } } if (ngx_quic_derive_key(cf->log, "av_token_key", &conf->host_key, &ngx_stream_quic_salt, conf->av_token_key, NGX_QUIC_AV_KEY_LEN) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_quic_derive_key(cf->log, "sr_token_key", &conf->host_key, &ngx_stream_quic_salt, conf->sr_token_key, NGX_QUIC_SR_KEY_LEN) != NGX_OK) { return NGX_CONF_ERROR; } scf = ngx_stream_conf_get_module_srv_conf(cf, ngx_stream_ssl_module); conf->ssl = &scf->ssl; return NGX_CONF_OK; } static char * ngx_stream_quic_mtu(ngx_conf_t *cf, void *post, void *data) { size_t *sp = data; if (*sp < NGX_QUIC_MIN_INITIAL_SIZE || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"quic_mtu\" must be between %d and %d", NGX_QUIC_MIN_INITIAL_SIZE, NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_stream_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_quic_conf_t *qcf = conf; u_char *buf; size_t size; ssize_t n; ngx_str_t *value; ngx_file_t file; ngx_file_info_t fi; if (qcf->host_key.len) { return "is duplicate"; } buf = NULL; #if (NGX_SUPPRESS_WARN) size = 0; #endif value = cf->args->elts; if (ngx_conf_full_name(cf->cycle, &value[1], 1) != NGX_OK) { return NGX_CONF_ERROR; } ngx_memzero(&file, sizeof(ngx_file_t)); file.name = value[1]; file.log = cf->log; file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); if (file.fd == NGX_INVALID_FILE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, ngx_open_file_n " \"%V\" failed", &file.name); return NGX_CONF_ERROR; } if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) { ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno, ngx_fd_info_n " \"%V\" failed", &file.name); goto failed; } size = ngx_file_size(&fi); if (size == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"%V\" zero key size", &file.name); goto failed; } buf = ngx_pnalloc(cf->pool, size); if (buf == NULL) { goto failed; } n = ngx_read_file(&file, buf, size, 0); if (n == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno, ngx_read_file_n " \"%V\" failed", &file.name); goto failed; } if ((size_t) n != size) { ngx_conf_log_error(NGX_LOG_CRIT, cf, 0, ngx_read_file_n " \"%V\" returned only " "%z bytes instead of %uz", &file.name, n, size); goto failed; } qcf->host_key.data = buf; qcf->host_key.len = n; if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, ngx_close_file_n " \"%V\" failed", &file.name); } return NGX_CONF_OK; failed: if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, ngx_close_file_n " \"%V\" failed", &file.name); } if (buf) { ngx_explicit_memzero(buf, size); } return NGX_CONF_ERROR; }