Mercurial > hg > nginx-quic
view src/core/ngx_list.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 | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_LIST_H_INCLUDED_ #define _NGX_LIST_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef struct ngx_list_part_s ngx_list_part_t; struct ngx_list_part_s { void *elts; ngx_uint_t nelts; ngx_list_part_t *next; }; typedef struct { ngx_list_part_t *last; ngx_list_part_t part; size_t size; ngx_uint_t nalloc; ngx_pool_t *pool; } ngx_list_t; ngx_list_t *ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size); static ngx_inline ngx_int_t ngx_list_init(ngx_list_t *list, ngx_pool_t *pool, ngx_uint_t n, size_t size) { list->part.elts = ngx_palloc(pool, n * size); if (list->part.elts == NULL) { return NGX_ERROR; } list->part.nelts = 0; list->part.next = NULL; list->last = &list->part; list->size = size; list->nalloc = n; list->pool = pool; return NGX_OK; } /* * * the iteration through the list: * * part = &list.part; * data = part->elts; * * for (i = 0 ;; i++) { * * if (i >= part->nelts) { * if (part->next == NULL) { * break; * } * * part = part->next; * data = part->elts; * i = 0; * } * * ... data[i] ... * * } */ void *ngx_list_push(ngx_list_t *list); #endif /* _NGX_LIST_H_INCLUDED_ */