nginx数据结构之ngx_listening_s

朱雀 2022-01-23 14:21 158阅读 0赞

src/core/ngx_connection.h
    typedef struct ngx_listening_s  ngx_listening_t;
     
    struct ngx_listening_s {
        ngx_socket_t        fd;                //文件描述符
     
        struct sockaddr    *sockaddr;          //socket地址
        socklen_t           socklen;           //地址长度
        size_t              addr_text_max_len; 
        ngx_str_t           addr_text;         //最终存放socket地址，之前的sockaddr主要存放没转换前的数据，之后会讲解
        int                 type;
     
        int                 backlog;
        int                 rcvbuf;            //接受缓冲区大小
        int                 sndbuf;            //发送缓冲区大小
     
        /* 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;
        /* should be here because of the deferred accept */
        ngx_msec_t          post_accept_timeout;
     
        ngx_listening_t    *previous;
        ngx_connection_t   *connection;
     
        unsigned            open:1;                 //下面的标志表示状态
        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;
     
    #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
        unsigned            ipv6only:2;
    #endif
     
    #if (NGX_HAVE_DEFERRED_ACCEPT)
        unsigned            deferred_accept:1;
        unsigned            delete_deferred:1;
        unsigned            add_deferred:1;
    #ifdef SO_ACCEPTFILTER
        char               *accept_filter;
    #endif
    #endif
    #if (NGX_HAVE_SETFIB)
        int                 setfib;
    #endif
     
    };