Upstream: flush low-level buffers on write retry. If the data to write is bigger than what the socket can send, and the reminder is smaller than NGX_SSL_BUFSIZE, then SSL_write() fails with SSL_ERROR_WANT_WRITE. The reminder of payload however is successfully copied to the low-level buffer and all the output chain buffers are flushed. This means that retry logic doesn't work because ngx_http_upstream_process_non_buffered_request() checks only if there's anything in the output chain buffers and ignores the fact that something may be buffered in low-level parts of the stack. Signed-off-by: Patryk Lesiewicz <patryk@google.com>

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGINX_H_INCLUDED_
#define _NGINX_H_INCLUDED_


#define nginx_version      1013008
#define NGINX_VERSION      "1.13.8"
#define NGINX_VER          "nginx/" NGINX_VERSION

#ifdef NGX_BUILD
#define NGINX_VER_BUILD    NGINX_VER " (" NGX_BUILD ")"
#else
#define NGINX_VER_BUILD    NGINX_VER
#endif

#define NGINX_VAR          "NGINX"
#define NGX_OLDPID_EXT     ".oldbin"


#endif /* _NGINX_H_INCLUDED_ */