Mercurial > hg > nginx
view src/stream/ngx_stream_ssl_module.h @ 7098:7bfbf73db920
Stream: relaxed next upstream condition (ticket #1317).
When switching to a next upstream, some buffers could be stuck in the middle
of the filter chain. A condition existed that raised an error when this
happened. As it turned out, this condition prevented switching to a next
upstream if ssl preread was used with the TCP protocol (see the ticket).
In fact, the condition does not make sense for TCP, since after successful
connection to an upstream switching to another upstream never happens. As for
UDP, the issue with stuck buffers is unlikely to happen, but is still possible.
Specifically, if a filter delays sending data to upstream.
The condition can be relaxed to only check the "buffered" bitmask of the
upstream connection. The new condition is simpler and fixes the ticket issue
as well. Additionally, the upstream_out chain is now reset for UDP prior to
connecting to a new upstream to prevent repeating the client data twice.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Mon, 11 Sep 2017 15:32:31 +0300 |
parents | 41cb1b64561d |
children | 7f955d3b9a0d |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_SSL_H_INCLUDED_ #define _NGX_STREAM_SSL_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> typedef struct { ngx_msec_t handshake_timeout; ngx_flag_t prefer_server_ciphers; ngx_ssl_t ssl; ngx_uint_t protocols; ngx_uint_t verify; ngx_uint_t verify_depth; ssize_t builtin_session_cache; time_t session_timeout; ngx_array_t *certificates; ngx_array_t *certificate_keys; ngx_str_t dhparam; ngx_str_t ecdh_curve; ngx_str_t client_certificate; ngx_str_t trusted_certificate; ngx_str_t crl; ngx_str_t ciphers; ngx_array_t *passwords; ngx_shm_zone_t *shm_zone; ngx_flag_t session_tickets; ngx_array_t *session_ticket_keys; } ngx_stream_ssl_conf_t; extern ngx_module_t ngx_stream_ssl_module; #endif /* _NGX_STREAM_SSL_H_INCLUDED_ */