Mercurial > hg > nginx-quic
annotate src/core/ngx_slab.h @ 7892:2096b21fcd10
gRPC: RST_STREAM(NO_ERROR) handling (ticket #1792).
As per https://tools.ietf.org/html/rfc7540#section-8.1,
: A server can send a complete response prior to the client
: sending an entire request if the response does not depend on
: any portion of the request that has not been sent and
: received. When this is true, a server MAY request that the
: client abort transmission of a request without error by
: sending a RST_STREAM with an error code of NO_ERROR after
: sending a complete response (i.e., a frame with the
: END_STREAM flag). Clients MUST NOT discard responses as a
: result of receiving such a RST_STREAM, though clients can
: always discard responses at their discretion for other
: reasons.
Previously, RST_STREAM(NO_ERROR) received from upstream after
a frame with the END_STREAM flag was incorrectly treated as an
error. Now, a single RST_STREAM(NO_ERROR) is properly handled.
This fixes problems observed with modern grpc-c [1], as well
as with the Go gRPC module.
[1] https://github.com/grpc/grpc/pull/1661
author | Ruslan Ermilov <ru@nginx.com> |
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date | Thu, 23 Apr 2020 15:10:24 +0300 |
parents | 69f9ee0342db |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_SLAB_H_INCLUDED_ |
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9 #define _NGX_SLAB_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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15 |
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16 typedef struct ngx_slab_page_s ngx_slab_page_t; |
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18 struct ngx_slab_page_s { |
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19 uintptr_t slab; |
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20 ngx_slab_page_t *next; |
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21 uintptr_t prev; |
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22 }; |
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23 |
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25 typedef struct { |
6828 | 26 ngx_uint_t total; |
27 ngx_uint_t used; | |
28 | |
29 ngx_uint_t reqs; | |
30 ngx_uint_t fails; | |
31 } ngx_slab_stat_t; | |
32 | |
33 | |
34 typedef struct { | |
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35 ngx_shmtx_sh_t lock; |
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36 |
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37 size_t min_size; |
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38 size_t min_shift; |
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39 |
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40 ngx_slab_page_t *pages; |
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41 ngx_slab_page_t *last; |
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42 ngx_slab_page_t free; |
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45 ngx_uint_t pfree; |
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47 u_char *start; |
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48 u_char *end; |
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49 |
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50 ngx_shmtx_t mutex; |
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51 |
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52 u_char *log_ctx; |
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53 u_char zero; |
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54 |
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55 unsigned log_nomem:1; |
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56 |
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57 void *data; |
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58 void *addr; |
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59 } ngx_slab_pool_t; |
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61 |
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62 void ngx_slab_sizes_init(void); |
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63 void ngx_slab_init(ngx_slab_pool_t *pool); |
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64 void *ngx_slab_alloc(ngx_slab_pool_t *pool, size_t size); |
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65 void *ngx_slab_alloc_locked(ngx_slab_pool_t *pool, size_t size); |
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66 void *ngx_slab_calloc(ngx_slab_pool_t *pool, size_t size); |
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67 void *ngx_slab_calloc_locked(ngx_slab_pool_t *pool, size_t size); |
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68 void ngx_slab_free(ngx_slab_pool_t *pool, void *p); |
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69 void ngx_slab_free_locked(ngx_slab_pool_t *pool, void *p); |
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70 |
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72 #endif /* _NGX_SLAB_H_INCLUDED_ */ |