Mercurial > hg > nginx
view src/stream/ngx_stream.h @ 6435:d1c791479bbb
Stream: post first read events from client and upstream.
The main proxy function ngx_stream_proxy_process() can terminate the stream
session. The code, following it, should check its return code to make sure the
session still exists. This happens in client and upstream initialization
functions. Swapping ngx_stream_proxy_process() call with the code, that
follows it, leaves the same problem vice versa.
In future ngx_stream_proxy_process() will call ngx_stream_proxy_next_upstream()
making it too complicated to know if stream session still exists after this
call.
Now ngx_stream_proxy_process() is called from posted event handlers in both
places with no code following it. The posted event is automatically removed
once session is terminated.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 15 Mar 2016 15:55:23 +0300 |
parents | 7565e056fad6 |
children | 8f038068f4bc |
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/* * Copyright (C) Roman Arutyunyan * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_H_INCLUDED_ #define _NGX_STREAM_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_STREAM_SSL) #include <ngx_stream_ssl_module.h> #endif typedef struct ngx_stream_session_s ngx_stream_session_t; #include <ngx_stream_upstream.h> #include <ngx_stream_upstream_round_robin.h> typedef struct { void **main_conf; void **srv_conf; } ngx_stream_conf_ctx_t; typedef struct { union { struct sockaddr sockaddr; struct sockaddr_in sockaddr_in; #if (NGX_HAVE_INET6) struct sockaddr_in6 sockaddr_in6; #endif #if (NGX_HAVE_UNIX_DOMAIN) struct sockaddr_un sockaddr_un; #endif u_char sockaddr_data[NGX_SOCKADDRLEN]; } u; socklen_t socklen; /* server ctx */ ngx_stream_conf_ctx_t *ctx; unsigned bind:1; unsigned wildcard:1; #if (NGX_STREAM_SSL) unsigned ssl:1; #endif #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) unsigned ipv6only:1; #endif #if (NGX_HAVE_REUSEPORT) unsigned reuseport:1; #endif unsigned so_keepalive:2; #if (NGX_HAVE_KEEPALIVE_TUNABLE) int tcp_keepidle; int tcp_keepintvl; int tcp_keepcnt; #endif int backlog; } ngx_stream_listen_t; typedef struct { ngx_stream_conf_ctx_t *ctx; ngx_str_t addr_text; #if (NGX_STREAM_SSL) ngx_uint_t ssl; /* unsigned ssl:1; */ #endif } ngx_stream_addr_conf_t; typedef struct { in_addr_t addr; ngx_stream_addr_conf_t conf; } ngx_stream_in_addr_t; #if (NGX_HAVE_INET6) typedef struct { struct in6_addr addr6; ngx_stream_addr_conf_t conf; } ngx_stream_in6_addr_t; #endif typedef struct { /* ngx_stream_in_addr_t or ngx_stream_in6_addr_t */ void *addrs; ngx_uint_t naddrs; } ngx_stream_port_t; typedef struct { int family; in_port_t port; ngx_array_t addrs; /* array of ngx_stream_conf_addr_t */ } ngx_stream_conf_port_t; typedef struct { ngx_stream_listen_t opt; } ngx_stream_conf_addr_t; typedef ngx_int_t (*ngx_stream_access_pt)(ngx_stream_session_t *s); typedef struct { ngx_array_t servers; /* ngx_stream_core_srv_conf_t */ ngx_array_t listen; /* ngx_stream_listen_t */ ngx_stream_access_pt limit_conn_handler; ngx_stream_access_pt access_handler; } ngx_stream_core_main_conf_t; typedef void (*ngx_stream_handler_pt)(ngx_stream_session_t *s); typedef struct { ngx_stream_handler_pt handler; ngx_stream_conf_ctx_t *ctx; u_char *file_name; ngx_int_t line; ngx_log_t *error_log; ngx_flag_t tcp_nodelay; } ngx_stream_core_srv_conf_t; struct ngx_stream_session_s { uint32_t signature; /* "STRM" */ ngx_connection_t *connection; off_t received; ngx_log_handler_pt log_handler; void **ctx; void **main_conf; void **srv_conf; ngx_stream_upstream_t *upstream; }; typedef struct { ngx_int_t (*postconfiguration)(ngx_conf_t *cf); void *(*create_main_conf)(ngx_conf_t *cf); char *(*init_main_conf)(ngx_conf_t *cf, void *conf); void *(*create_srv_conf)(ngx_conf_t *cf); char *(*merge_srv_conf)(ngx_conf_t *cf, void *prev, void *conf); } ngx_stream_module_t; #define NGX_STREAM_MODULE 0x4d525453 /* "STRM" */ #define NGX_STREAM_MAIN_CONF 0x02000000 #define NGX_STREAM_SRV_CONF 0x04000000 #define NGX_STREAM_UPS_CONF 0x08000000 #define NGX_STREAM_MAIN_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, main_conf) #define NGX_STREAM_SRV_CONF_OFFSET offsetof(ngx_stream_conf_ctx_t, srv_conf) #define ngx_stream_get_module_ctx(s, module) (s)->ctx[module.ctx_index] #define ngx_stream_set_ctx(s, c, module) s->ctx[module.ctx_index] = c; #define ngx_stream_delete_ctx(s, module) s->ctx[module.ctx_index] = NULL; #define ngx_stream_get_module_main_conf(s, module) \ (s)->main_conf[module.ctx_index] #define ngx_stream_get_module_srv_conf(s, module) \ (s)->srv_conf[module.ctx_index] #define ngx_stream_conf_get_module_main_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->main_conf[module.ctx_index] #define ngx_stream_conf_get_module_srv_conf(cf, module) \ ((ngx_stream_conf_ctx_t *) cf->ctx)->srv_conf[module.ctx_index] #define ngx_stream_cycle_get_module_main_conf(cycle, module) \ (cycle->conf_ctx[ngx_stream_module.index] ? \ ((ngx_stream_conf_ctx_t *) cycle->conf_ctx[ngx_stream_module.index]) \ ->main_conf[module.ctx_index]: \ NULL) void ngx_stream_init_connection(ngx_connection_t *c); void ngx_stream_close_connection(ngx_connection_t *c); extern ngx_module_t ngx_stream_module; extern ngx_uint_t ngx_stream_max_module; extern ngx_module_t ngx_stream_core_module; #endif /* _NGX_STREAM_H_INCLUDED_ */