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annotate src/core/ngx_syslog.h @ 7892:2096b21fcd10

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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>
date Thu, 23 Apr 2020 15:10:24 +0300
parents 7f9935f07fe9
children 29adacffdefa
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777202558122 Added syslog support for error_log and access_log directives.
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 */
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7 #ifndef _NGX_SYSLOG_H_INCLUDED_
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8 #define _NGX_SYSLOG_H_INCLUDED_
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11 typedef struct {
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12 ngx_uint_t facility;
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13 ngx_uint_t severity;
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14 ngx_str_t tag;
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16 ngx_addr_t server;
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17 ngx_connection_t conn;
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18 unsigned busy:1;
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19 unsigned nohostname:1;
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20 } ngx_syslog_peer_t;
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23 char *ngx_syslog_process_conf(ngx_conf_t *cf, ngx_syslog_peer_t *peer);
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24 u_char *ngx_syslog_add_header(ngx_syslog_peer_t *peer, u_char *buf);
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25 void ngx_syslog_writer(ngx_log_t *log, ngx_uint_t level, u_char *buf,
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26 size_t len);
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27 ssize_t ngx_syslog_send(ngx_syslog_peer_t *peer, u_char *buf, size_t len);
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30 #endif /* _NGX_SYSLOG_H_INCLUDED_ */