자료형
ngx_socket_ttypedef int ngx_socket_t;ngx_fd_ttypedef int ngx_fd_t;ngx_int_ttypedef intptr_t ngx_int_t;ngx_uint_ttypedef uintptr_t ngx_uint_t;
구조체
ngx_array_ttypedef struct { void *elts; ngx_uint_t nelts; size_t size; ngx_uint_t nalloc; ngx_pool_t *pool; } ngx_array_t;ngx_buf_tstruct ngx_buf_s { u_char *pos; u_char *last; off_t file_pos; off_t file_last; u_char *start; /* start of buffer */ u_char *end; /* end of buffer */ ngx_buf_tag_t tag; ngx_file_t *file; ngx_buf_t *shadow; /* the buf's content could be changed */ unsigned temporary:1; /* * the buf's content is in a memory cache or in a read only memory * and must not be changed */ unsigned memory:1; /* the buf's content is mmap()ed and must not be changed */ unsigned mmap:1; unsigned recycled:1; unsigned in_file:1; unsigned flush:1; unsigned sync:1; unsigned last_buf:1; unsigned last_in_chain:1; unsigned last_shadow:1; unsigned temp_file:1; /* STUB */ int num; };ngx_file_tstruct ngx_file_s { ngx_fd_t fd; ngx_str_t name; ngx_file_info_t info; off_t offset; off_t sys_offset; ngx_log_t *log; #if (NGX_THREADS || NGX_COMPAT) ngx_int_t (*thread_handler)(ngx_thread_task_t *task, ngx_file_t *file); void *thread_ctx; ngx_thread_task_t *thread_task; #endif #if (NGX_HAVE_FILE_AIO || NGX_COMPAT) ngx_event_aio_t *aio; #endif unsigned valid_info:1; unsigned directio:1; };ngx_conf_tstruct ngx_conf_s { char *name; ngx_array_t *args; ngx_cycle_t *cycle; ngx_pool_t *pool; ngx_pool_t *temp_pool; ngx_conf_file_t *conf_file; ngx_log_t *log; void *ctx; ngx_uint_t module_type; ngx_uint_t cmd_type; ngx_conf_handler_pt handler; void *handler_conf; };ngx_conf_file_ttypedef struct { ngx_file_t file; ngx_buf_t *buffer; ngx_buf_t *dump; ngx_uint_t line; } ngx_conf_file_t;ngx_cycle_tstruct ngx_cycle_s { void ****conf_ctx; ngx_pool_t *pool; ngx_log_t *log; ngx_log_t new_log; ngx_uint_t log_use_stderr; /* unsigned log_use_stderr:1; */ ngx_connection_t **files; ngx_connection_t *free_connections; ngx_uint_t free_connection_n; ngx_module_t **modules; ngx_uint_t modules_n; ngx_uint_t modules_used; /* unsigned modules_used:1; */ ngx_queue_t reusable_connections_queue; ngx_uint_t reusable_connections_n; time_t connections_reuse_time; ngx_array_t listening; ngx_array_t paths; ngx_array_t config_dump; ngx_rbtree_t config_dump_rbtree; ngx_rbtree_node_t config_dump_sentinel; ngx_list_t open_files; ngx_list_t shared_memory; ngx_uint_t connection_n; ngx_uint_t files_n; ngx_connection_t *connections; ngx_event_t *read_events; ngx_event_t *write_events; ngx_cycle_t *old_cycle; ngx_str_t conf_file; ngx_str_t conf_param; ngx_str_t conf_prefix; ngx_str_t prefix; ngx_str_t error_log; ngx_str_t lock_file; ngx_str_t hostname; };ngx_module_tstruct ngx_module_s { ngx_uint_t ctx_index; ngx_uint_t index; char *name; ngx_uint_t spare0; ngx_uint_t spare1; ngx_uint_t version; const char *signature; void *ctx; ngx_command_t *commands; // ngx_command_t들의 배열 인듯? ngx_uint_t type; ngx_int_t (*init_master)(ngx_log_t *log); ngx_int_t (*init_module)(ngx_cycle_t *cycle); ngx_int_t (*init_process)(ngx_cycle_t *cycle); ngx_int_t (*init_thread)(ngx_cycle_t *cycle); void (*exit_thread)(ngx_cycle_t *cycle); void (*exit_process)(ngx_cycle_t *cycle); void (*exit_master)(ngx_cycle_t *cycle); uintptr_t spare_hook0; uintptr_t spare_hook1; uintptr_t spare_hook2; uintptr_t spare_hook3; uintptr_t spare_hook4; uintptr_t spare_hook5; uintptr_t spare_hook6; uintptr_t spare_hook7; };ngx_command_tstruct ngx_command_s { ngx_str_t name; ngx_uint_t type; char *(*set)(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); ngx_uint_t conf; ngx_uint_t offset; void *post; };ngx_listening_tstruct ngx_listening_s { ngx_socket_t fd; struct sockaddr *sockaddr; socklen_t socklen; /* size of sockaddr */ size_t addr_text_max_len; ngx_str_t addr_text; int type; int backlog; int rcvbuf; int sndbuf; #if (NGX_HAVE_KEEPALIVE_TUNABLE) int keepidle; int keepintvl; int keepcnt; #endif /* handler of accepted connection */ ngx_connection_handler_pt handler; void *servers; /* array of ngx_http_in_addr_t, for example */ ngx_log_t log; ngx_log_t *logp; size_t pool_size; /* should be here because of the AcceptEx() preread */ size_t post_accept_buffer_size; ngx_listening_t *previous; ngx_connection_t *connection; ngx_rbtree_t rbtree; ngx_rbtree_node_t sentinel; ngx_uint_t worker; unsigned open:1; unsigned remain:1; unsigned ignore:1; unsigned bound:1; /* already bound */ unsigned inherited:1; /* inherited from previous process */ unsigned nonblocking_accept:1; unsigned listen:1; unsigned nonblocking:1; unsigned shared:1; /* shared between threads or processes */ unsigned addr_ntop:1; unsigned wildcard:1; #if (NGX_HAVE_INET6) unsigned ipv6only:1; #endif unsigned reuseport:1; unsigned add_reuseport:1; unsigned keepalive:2; unsigned quic:1; unsigned deferred_accept:1; unsigned delete_deferred:1; unsigned add_deferred:1; #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) char *accept_filter; #endif #if (NGX_HAVE_SETFIB) int setfib; #endif #if (NGX_HAVE_TCP_FASTOPEN) int fastopen; #endif };- 소켓마다 하나씩 만들어진다.
- servers 멤버 변수를 보면, void * 형태로
ngx_http_in_addr_t의 array 형태가 올 수 있다고 했는데, 아래의 경우 array형태로 온다고 생각했다.server { listen 80; listen 1.1.1.1:80; listen 2.2.2.2:80; }
ngx_connection_tstruct ngx_connection_s { void *data; ngx_event_t *read; ngx_event_t *write; ngx_socket_t fd; ngx_recv_pt recv; ngx_send_pt send; ngx_recv_chain_pt recv_chain; ngx_send_chain_pt send_chain; ngx_listening_t *listening; off_t sent; ngx_log_t *log; ngx_pool_t *pool; int type; struct sockaddr *sockaddr; socklen_t socklen; ngx_str_t addr_text; ngx_proxy_protocol_t *proxy_protocol; #if (NGX_QUIC || NGX_COMPAT) ngx_quic_stream_t *quic; #endif #if (NGX_SSL || NGX_COMPAT) ngx_ssl_connection_t *ssl; #endif ngx_udp_connection_t *udp; struct sockaddr *local_sockaddr; socklen_t local_socklen; ngx_buf_t *buffer; ngx_queue_t queue; ngx_atomic_uint_t number; ngx_msec_t start_time; ngx_uint_t requests; unsigned buffered:8; unsigned log_error:3; /* ngx_connection_log_error_e */ unsigned timedout:1; unsigned error:1; unsigned destroyed:1; unsigned pipeline:1; unsigned idle:1; unsigned reusable:1; unsigned close:1; unsigned shared:1; unsigned sendfile:1; unsigned sndlowat:1; unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */ unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */ unsigned need_last_buf:1; unsigned need_flush_buf:1; #if (NGX_HAVE_SENDFILE_NODISKIO || NGX_COMPAT) unsigned busy_count:2; #endif #if (NGX_THREADS || NGX_COMPAT) ngx_thread_task_t *sendfile_task; #endif };ngx_event_tstruct ngx_event_s { void *data; unsigned write:1; unsigned accept:1; /* used to detect the stale events in kqueue and epoll */ unsigned instance:1; /* * the event was passed or would be passed to a kernel; * in aio mode - operation was posted. */ unsigned active:1; unsigned disabled:1; /* the ready event; in aio mode 0 means that no operation can be posted */ unsigned ready:1; unsigned oneshot:1; /* aio operation is complete */ unsigned complete:1; unsigned eof:1; unsigned error:1; unsigned timedout:1; unsigned timer_set:1; unsigned delayed:1; unsigned deferred_accept:1; /* the pending eof reported by kqueue, epoll or in aio chain operation */ unsigned pending_eof:1; unsigned posted:1; unsigned closed:1; /* to test on worker exit */ unsigned channel:1; unsigned resolver:1; unsigned cancelable:1; #if (NGX_HAVE_KQUEUE) unsigned kq_vnode:1; /* the pending errno reported by kqueue */ int kq_errno; #endif /* * kqueue only: * accept: number of sockets that wait to be accepted * read: bytes to read when event is ready * or lowat when event is set with NGX_LOWAT_EVENT flag * write: available space in buffer when event is ready * or lowat when event is set with NGX_LOWAT_EVENT flag * * iocp: TODO * * otherwise: * accept: 1 if accept many, 0 otherwise * read: bytes to read when event is ready, -1 if not known */ int available; ngx_event_handler_pt handler; #if (NGX_HAVE_IOCP) ngx_event_ovlp_t ovlp; #endif ngx_uint_t index; ngx_log_t *log; ngx_rbtree_node_t timer; /* the posted queue */ ngx_queue_t queue; #if 0 /* the threads support */ /* * the event thread context, we store it here * if $(CC) does not understand __thread declaration * and pthread_getspecific() is too costly */ void *thr_ctx; #if (NGX_EVENT_T_PADDING) /* event should not cross cache line in SMP */ uint32_t padding[NGX_EVENT_T_PADDING]; #endif #endif };ngx_http_connection_ttypedef struct { ngx_http_addr_conf_t *addr_conf; ngx_http_conf_ctx_t *conf_ctx; #if (NGX_HTTP_SSL || NGX_COMPAT) ngx_str_t *ssl_servername; #if (NGX_PCRE) ngx_http_regex_t *ssl_servername_regex; #endif #endif ngx_chain_t *busy; ngx_int_t nbusy; ngx_chain_t *free; unsigned ssl:1; unsigned proxy_protocol:1; } ngx_http_connection_t;ngx_http_core_srv_conf_ttypedef struct { /* array of the ngx_http_server_name_t, "server_name" directive */ ngx_array_t server_names; /* server ctx */ ngx_http_conf_ctx_t *ctx; u_char *file_name; ngx_uint_t line; ngx_str_t server_name; size_t connection_pool_size; size_t request_pool_size; size_t client_header_buffer_size; ngx_bufs_t large_client_header_buffers; ngx_msec_t client_header_timeout; ngx_flag_t ignore_invalid_headers; ngx_flag_t merge_slashes; ngx_flag_t underscores_in_headers; unsigned listen:1; #if (NGX_PCRE) unsigned captures:1; #endif ngx_http_core_loc_conf_t **named_locations; } ngx_http_core_srv_conf_t;- 얘가 configuration file에서의 server block에 해당하는 구조체인 것 같다.
ngx_http_conf_ctx_ttypedef struct { void **main_conf; void **srv_conf; void **loc_conf; } ngx_http_conf_ctx_t;ngx_http_addr_conf_tstruct ngx_http_addr_conf_s { /* the default server configuration for this address:port */ ngx_http_core_srv_conf_t *default_server; ngx_http_virtual_names_t *virtual_names; unsigned ssl:1; unsigned http2:1; unsigned quic:1; unsigned proxy_protocol:1; };ngx_http_in_addr_ttypedef struct { in_addr_t addr; ngx_http_addr_conf_t conf; } ngx_http_in_addr_t;ngx_http_port_ttypedef struct { /* ngx_http_in_addr_t or ngx_http_in6_addr_t */ void *addrs; ngx_uint_t naddrs; } ngx_http_port_t;ngx_http_server_name_ttypedef struct { #if (NGX_PCRE) ngx_http_regex_t *regex; #endif ngx_http_core_srv_conf_t *server; /* virtual name server conf */ ngx_str_t name; } ngx_http_server_name_t;ngx_http_virtual_names_ttypedef struct { ngx_hash_combined_t names; ngx_uint_t nregex; ngx_http_server_name_t *regex; } ngx_http_virtual_names_t;
함수 포인터
ngx_recv_pttypedef ssize_t (*ngx_recv_pt)(ngx_connection_t *c, u_char *buf, size_t size);ngx_send_pttypedef ssize_t (*ngx_send_pt)(ngx_connection_t *c, u_char *buf, size_t size);ngx_recv_chain_pttypedef ssize_t (*ngx_recv_chain_pt)(ngx_connection_t *c, ngx_chain_t *in, off_t limit);ngx_send_chain_pttypedef ngx_chain_t *(*ngx_send_chain_pt)(ngx_connection_t *c, ngx_chain_t *in, off_t limit);ngx_event_handler_pttypedef void (*ngx_event_handler_pt)(ngx_event_t *ev);ngx_conf_handler_pttypedef char *(*ngx_conf_handler_pt)(ngx_conf_t *cf, ngx_command_t *dummy, void *conf);
공부 내용 저장소