Mercurial > hg > nginx
view src/stream/ngx_stream.h @ 6749:f88a145b093e stable-1.10
HTTP/2: the "421 Misdirected Request" response (closes #848).
Since 4fbef397c753 nginx rejects with the 400 error any attempts of
requesting different host over the same connection, if the relevant
virtual server requires verification of a client certificate.
While requesting hosts other than negotiated isn't something legal
in HTTP/1.x, the HTTP/2 specification explicitly permits such requests
for connection reuse and has introduced a special response code 421.
According to RFC 7540 Section 9.1.2 this code can be sent by a server
that is not configured to produce responses for the combination of
scheme and authority that are included in the request URI. And the
client may retry the request over a different connection.
Now this code is used for requests that aren't authorized in current
connection. After receiving the 421 response a client will be able
to open a new connection, provide the required certificate and retry
the request.
Unfortunately, not all clients currently are able to handle it well.
Notably Chrome just shows an error, while at least the latest version
of Firefox retries the request over a new connection.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 20 May 2016 18:41:17 +0300 |
parents | 8f038068f4bc |
children | 6f8254ae61b8 |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_H_INCLUDED_ #define _NGX_STREAM_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_STREAM_SSL) #include <ngx_stream_ssl_module.h> #endif typedef struct ngx_stream_session_s ngx_stream_session_t; #include <ngx_stream_upstream.h> #include <ngx_stream_upstream_round_robin.h> typedef struct { void **main_conf; void **srv_conf; } ngx_stream_conf_ctx_t; typedef struct { union { struct sockaddr sockaddr; struct sockaddr_in sockaddr_in; #if (NGX_HAVE_INET6) struct sockaddr_in6 sockaddr_in6; #endif #if (NGX_HAVE_UNIX_DOMAIN) struct sockaddr_un sockaddr_un; #endif u_char sockaddr_data[NGX_SOCKADDRLEN]; } u; socklen_t socklen; /* server ctx */ ngx_stream_conf_ctx_t *ctx; unsigned bind:1; unsigned wildcard:1; #if (NGX_STREAM_SSL) unsigned ssl:1; #endif #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) unsigned ipv6only:1; #endif #if (NGX_HAVE_REUSEPORT) unsigned reuseport:1; #endif unsigned so_keepalive:2; #if (NGX_HAVE_KEEPALIVE_TUNABLE) int tcp_keepidle; int tcp_keepintvl; int tcp_keepcnt; #endif int backlog; int type; } ngx_stream_listen_t; typedef struct { ngx_stream_conf_ctx_t *ctx; ngx_str_t addr_text; #if (NGX_STREAM_SSL) ngx_uint_t ssl; /* unsigned ssl:1; */ #endif } ngx_stream_addr_conf_t; typedef struct { in_addr_t addr; ngx_stream_addr_conf_t conf; } ngx_stream_in_addr_t; #if (NGX_HAVE_INET6) typedef struct { struct in6_addr addr6; ngx_stream_addr_conf_t conf; } ngx_stream_in6_addr_t; #endif typedef struct { /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ void *addrs; ngx_uint_t naddrs; } ngx_stream_port_t; typedef struct { int family; int type; in_port_t port; ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ } ngx_stream_conf_port_t; typedef struct { ngx_stream_listen_t opt; } ngx_stream_conf_addr_t; typedef ngx_int_t (*ngx_stream_access_pt)(ngx_stream_session_t *s); typedef struct { ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ ngx_array_t listen; /* ngx_stream_listen_t */ ngx_stream_access_pt limit_conn_handler; ngx_stream_access_pt access_handler; } ngx_stream_core_main_conf_t; typedef void (*ngx_stream_handler_pt)(ngx_stream_session_t *s); typedef struct { ngx_stream_handler_pt handler; ngx_stream_conf_ctx_t *ctx; u_char *file_name; ngx_int_t line; ngx_log_t *error_log; ngx_flag_t tcp_nodelay; } ngx_stream_core_srv_conf_t; struct ngx_stream_session_s { uint32_t signature; /* "STRM" */ ngx_connection_t *connection; off_t received; ngx_log_handler_pt log_handler; void **ctx; void **main_conf; void **srv_conf; ngx_stream_upstream_t *upstream; }; typedef struct { ngx_int_t (*postconfiguration)(ngx_conf_t *cf); void *(*create_main_conf)(ngx_conf_t *cf); char *(*init_main_conf)(ngx_conf_t *cf, void *conf); void *(*create_srv_conf)(ngx_conf_t *cf); char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf); } ngx_stream_module_t; #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ #define NGX_STREAM_MAIN_CONF 0x02000000 #define NGX_STREAM_SRV_CONF 0x04000000 #define NGX_STREAM_UPS_CONF 0x08000000 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; #define ngx_stream_get_module_main_conf(s, module) \ (s)->main_conf[module.ctx_index] #define ngx_stream_get_module_srv_conf(s, module) \ (s)->srv_conf[module.ctx_index] #define ngx_stream_conf_get_module_main_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] #define ngx_stream_conf_get_module_srv_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ (cycle->conf_ctx[ngx_stream_module.index] ? \ ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ ->main_conf[module.ctx_index]: \ NULL) void ngx_stream_init_connection(ngx_connection_t *c); void ngx_stream_close_connection(ngx_connection_t *c); extern ngx_module_t ngx_stream_module; extern ngx_uint_t ngx_stream_max_module; extern ngx_module_t ngx_stream_core_module; #endif /* _NGX_STREAM_H_INCLUDED_ */