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view src/core/ngx_syslog.h @ 8456:c72d8839f427

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Mail: fixed SMTP pipelining to send the response immediately. Previously, if there were some pipelined SMTP data in the buffer when a proxied connection with the backend was established, nginx called ngx_mail_proxy_handler() to send these data, and not tried to send the response to the last command. In most cases, this response was later sent along with the response to the pipelined command, but if for some reason client decides to wait for the response before finishing the next command this might result in a connection hang. Fix is to always call ngx_mail_proxy_handler() to send the response, and additionally post an event to send the pipelined data if needed.
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 19 May 2021 03:13:12 +0300
parents 7f9935f07fe9
children 29adacffdefa
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/*
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_SYSLOG_H_INCLUDED_
#define _NGX_SYSLOG_H_INCLUDED_


typedef struct {
    ngx_uint_t        facility;
    ngx_uint_t        severity;
    ngx_str_t         tag;

    ngx_addr_t        server;
    ngx_connection_t  conn;
    unsigned          busy:1;
    unsigned          nohostname:1;
} ngx_syslog_peer_t;


char *ngx_syslog_process_conf(ngx_conf_t *cf, ngx_syslog_peer_t *peer);
u_char *ngx_syslog_add_header(ngx_syslog_peer_t *peer, u_char *buf);
void ngx_syslog_writer(ngx_log_t *log, ngx_uint_t level, u_char *buf,
    size_t len);
ssize_t ngx_syslog_send(ngx_syslog_peer_t *peer, u_char *buf, size_t len);


#endif /* _NGX_SYSLOG_H_INCLUDED_ */