Mercurial > hg > nginx
diff src/http/v2/ngx_http_v2_module.c @ 6246:257b51c37c5a
The HTTP/2 implementation (RFC 7240, 7241).
The SPDY support is removed, as it's incompatible with the new module.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Fri, 11 Sep 2015 20:13:06 +0300 |
parents | |
children | 2cd019520210 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/http/v2/ngx_http_v2_module.c Fri Sep 11 20:13:06 2015 +0300 @@ -0,0 +1,469 @@ + +/* + * Copyright (C) Nginx, Inc. + * Copyright (C) Valentin V. Bartenev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_http.h> +#include <ngx_http_v2_module.h> + + +static ngx_int_t ngx_http_v2_add_variables(ngx_conf_t *cf); + +static ngx_int_t ngx_http_v2_variable(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data); + +static ngx_int_t ngx_http_v2_module_init(ngx_cycle_t *cycle); + +static void *ngx_http_v2_create_main_conf(ngx_conf_t *cf); +static char *ngx_http_v2_init_main_conf(ngx_conf_t *cf, void *conf); +static void *ngx_http_v2_create_srv_conf(ngx_conf_t *cf); +static char *ngx_http_v2_merge_srv_conf(ngx_conf_t *cf, void *parent, + void *child); +static void *ngx_http_v2_create_loc_conf(ngx_conf_t *cf); +static char *ngx_http_v2_merge_loc_conf(ngx_conf_t *cf, void *parent, + void *child); + +static char *ngx_http_v2_recv_buffer_size(ngx_conf_t *cf, void *post, + void *data); +static char *ngx_http_v2_pool_size(ngx_conf_t *cf, void *post, void *data); +static char *ngx_http_v2_streams_index_mask(ngx_conf_t *cf, void *post, + void *data); +static char *ngx_http_v2_chunk_size(ngx_conf_t *cf, void *post, void *data); +static char *ngx_http_v2_spdy_deprecated(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + + +static ngx_conf_post_t ngx_http_v2_recv_buffer_size_post = + { ngx_http_v2_recv_buffer_size }; +static ngx_conf_post_t ngx_http_v2_pool_size_post = + { ngx_http_v2_pool_size }; +static ngx_conf_post_t ngx_http_v2_streams_index_mask_post = + { ngx_http_v2_streams_index_mask }; +static ngx_conf_post_t ngx_http_v2_chunk_size_post = + { ngx_http_v2_chunk_size }; + + +static ngx_command_t ngx_http_v2_commands[] = { + + { ngx_string("http2_recv_buffer_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_MAIN_CONF_OFFSET, + offsetof(ngx_http_v2_main_conf_t, recv_buffer_size), + &ngx_http_v2_recv_buffer_size_post }, + + { ngx_string("http2_pool_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, pool_size), + &ngx_http_v2_pool_size_post }, + + { ngx_string("http2_max_concurrent_streams"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, concurrent_streams), + NULL }, + + { ngx_string("http2_max_field_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, max_field_size), + NULL }, + + { ngx_string("http2_max_header_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, max_header_size), + NULL }, + + { ngx_string("http2_streams_index_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_num_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, streams_index_mask), + &ngx_http_v2_streams_index_mask_post }, + + { ngx_string("http2_recv_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_msec_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, recv_timeout), + NULL }, + + { ngx_string("http2_idle_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_msec_slot, + NGX_HTTP_SRV_CONF_OFFSET, + offsetof(ngx_http_v2_srv_conf_t, idle_timeout), + NULL }, + + { ngx_string("http2_chunk_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_HTTP_LOC_CONF_OFFSET, + offsetof(ngx_http_v2_loc_conf_t, chunk_size), + &ngx_http_v2_chunk_size_post }, + + { ngx_string("spdy_recv_buffer_size"), + NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_MAIN_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_pool_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_max_concurrent_streams"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_streams_index_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_recv_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_keepalive_timeout"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_headers_comp"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("spdy_chunk_size"), + NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, + ngx_http_v2_spdy_deprecated, + NGX_HTTP_LOC_CONF_OFFSET, + 0, + NULL }, + + ngx_null_command +}; + + +static ngx_http_module_t ngx_http_v2_module_ctx = { + ngx_http_v2_add_variables, /* preconfiguration */ + NULL, /* postconfiguration */ + + ngx_http_v2_create_main_conf, /* create main configuration */ + ngx_http_v2_init_main_conf, /* init main configuration */ + + ngx_http_v2_create_srv_conf, /* create server configuration */ + ngx_http_v2_merge_srv_conf, /* merge server configuration */ + + ngx_http_v2_create_loc_conf, /* create location configuration */ + ngx_http_v2_merge_loc_conf /* merge location configuration */ +}; + + +ngx_module_t ngx_http_v2_module = { + NGX_MODULE_V1, + &ngx_http_v2_module_ctx, /* module context */ + ngx_http_v2_commands, /* module directives */ + NGX_HTTP_MODULE, /* module type */ + NULL, /* init master */ + ngx_http_v2_module_init, /* init module */ + NULL, /* init process */ + NULL, /* init thread */ + NULL, /* exit thread */ + NULL, /* exit process */ + NULL, /* exit master */ + NGX_MODULE_V1_PADDING +}; + + +static ngx_http_variable_t ngx_http_v2_vars[] = { + + { ngx_string("http2"), NULL, + ngx_http_v2_variable, 0, 0, 0 }, + + { ngx_null_string, NULL, NULL, 0, 0, 0 } +}; + + +static ngx_int_t +ngx_http_v2_add_variables(ngx_conf_t *cf) +{ + ngx_http_variable_t *var, *v; + + for (v = ngx_http_v2_vars; v->name.len; v++) { + var = ngx_http_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 ngx_int_t +ngx_http_v2_variable(ngx_http_request_t *r, + ngx_http_variable_value_t *v, uintptr_t data) +{ + + if (r->stream) { +#if (NGX_HTTP_SSL) + + if (r->connection->ssl) { + v->len = sizeof("h2") - 1; + v->valid = 1; + v->no_cacheable = 0; + v->not_found = 0; + v->data = (u_char *) "h2"; + + return NGX_OK; + } + +#endif + v->len = sizeof("h2c") - 1; + v->valid = 1; + v->no_cacheable = 0; + v->not_found = 0; + v->data = (u_char *) "h2c"; + + return NGX_OK; + } + + *v = ngx_http_variable_null_value; + + return NGX_OK; +} + + +static ngx_int_t +ngx_http_v2_module_init(ngx_cycle_t *cycle) +{ + return NGX_OK; +} + + +static void * +ngx_http_v2_create_main_conf(ngx_conf_t *cf) +{ + ngx_http_v2_main_conf_t *h2mcf; + + h2mcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_main_conf_t)); + if (h2mcf == NULL) { + return NULL; + } + + h2mcf->recv_buffer_size = NGX_CONF_UNSET_SIZE; + + return h2mcf; +} + + +static char * +ngx_http_v2_init_main_conf(ngx_conf_t *cf, void *conf) +{ + ngx_http_v2_main_conf_t *h2mcf = conf; + + ngx_conf_init_size_value(h2mcf->recv_buffer_size, 256 * 1024); + + return NGX_CONF_OK; +} + + +static void * +ngx_http_v2_create_srv_conf(ngx_conf_t *cf) +{ + ngx_http_v2_srv_conf_t *h2scf; + + h2scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_srv_conf_t)); + if (h2scf == NULL) { + return NULL; + } + + h2scf->pool_size = NGX_CONF_UNSET_SIZE; + + h2scf->concurrent_streams = NGX_CONF_UNSET_UINT; + + h2scf->max_field_size = NGX_CONF_UNSET_SIZE; + h2scf->max_header_size = NGX_CONF_UNSET_SIZE; + + h2scf->streams_index_mask = NGX_CONF_UNSET_UINT; + + h2scf->recv_timeout = NGX_CONF_UNSET_MSEC; + h2scf->idle_timeout = NGX_CONF_UNSET_MSEC; + + return h2scf; +} + + +static char * +ngx_http_v2_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_v2_srv_conf_t *prev = parent; + ngx_http_v2_srv_conf_t *conf = child; + + ngx_conf_merge_size_value(conf->pool_size, prev->pool_size, 4096); + + ngx_conf_merge_uint_value(conf->concurrent_streams, + prev->concurrent_streams, 128); + + ngx_conf_merge_size_value(conf->max_field_size, prev->max_field_size, + 4096); + ngx_conf_merge_size_value(conf->max_header_size, prev->max_header_size, + 16384); + + ngx_conf_merge_uint_value(conf->streams_index_mask, + prev->streams_index_mask, 32 - 1); + + ngx_conf_merge_msec_value(conf->recv_timeout, + prev->recv_timeout, 30000); + ngx_conf_merge_msec_value(conf->idle_timeout, + prev->idle_timeout, 180000); + + return NGX_CONF_OK; +} + + +static void * +ngx_http_v2_create_loc_conf(ngx_conf_t *cf) +{ + ngx_http_v2_loc_conf_t *h2lcf; + + h2lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v2_loc_conf_t)); + if (h2lcf == NULL) { + return NULL; + } + + h2lcf->chunk_size = NGX_CONF_UNSET_SIZE; + + return h2lcf; +} + + +static char * +ngx_http_v2_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_http_v2_loc_conf_t *prev = parent; + ngx_http_v2_loc_conf_t *conf = child; + + ngx_conf_merge_size_value(conf->chunk_size, prev->chunk_size, 8 * 1024); + + return NGX_CONF_OK; +} + + +static char * +ngx_http_v2_recv_buffer_size(ngx_conf_t *cf, void *post, void *data) +{ + size_t *sp = data; + + if (*sp <= 2 * NGX_HTTP_V2_STATE_BUFFER_SIZE) { + return "value is too small"; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_v2_pool_size(ngx_conf_t *cf, void *post, void *data) +{ + size_t *sp = data; + + if (*sp < NGX_MIN_POOL_SIZE) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the pool size must be no less than %uz", + NGX_MIN_POOL_SIZE); + + return NGX_CONF_ERROR; + } + + if (*sp % NGX_POOL_ALIGNMENT) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the pool size must be a multiple of %uz", + NGX_POOL_ALIGNMENT); + + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_v2_streams_index_mask(ngx_conf_t *cf, void *post, void *data) +{ + ngx_uint_t *np = data; + + ngx_uint_t mask; + + mask = *np - 1; + + if (*np == 0 || (*np & mask)) { + return "must be a power of two"; + } + + *np = mask; + + return NGX_CONF_OK; +} + + +static char * +ngx_http_v2_chunk_size(ngx_conf_t *cf, void *post, void *data) +{ + size_t *sp = data; + + if (*sp == 0) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the http2 chunk size cannot be zero"); + + return NGX_CONF_ERROR; + } + + if (*sp > NGX_HTTP_V2_MAX_FRAME_SIZE) { + *sp = NGX_HTTP_V2_MAX_FRAME_SIZE; + } + + return NGX_CONF_OK; +} + + +static char * +ngx_http_v2_spdy_deprecated(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_conf_log_error(NGX_LOG_WARN, cf, 0, + "invalid directive \"%V\": ngx_http_spdy_module " + "was superseded by ngx_http_v2_module", &cmd->name); + + return NGX_CONF_OK; +}