ngx_url_t

定义在 src/core/ngx_inet.h

typedef struct {
    ngx_str_t                 url;
    ngx_str_t                 host;
    ngx_str_t                 port_text;
    ngx_str_t                 uri;

    in_port_t                 port;
    in_port_t                 default_port;
    in_port_t                 last_port;
    int                       family;

    unsigned                  listen:1;
    unsigned                  uri_part:1;
    unsigned                  no_resolve:1;

    unsigned                  no_port:1;
    unsigned                  wildcard:1;

    socklen_t                 socklen;
    ngx_sockaddr_t            sockaddr;

    ngx_addr_t               *addrs;
    ngx_uint_t                naddrs;

    char                     *err;
} ngx_url_t;

ngx_url_t 是 Nginx 中用于解析和存储 URL 或网络地址信息的核心结构体，主要用于配置解析、套接字地址管理 等