Apache: The Definitive Guide, 3rd Edition

Per-Server Configuration

Since a single instance of Apache may be called on to handle a request for any of the configured virtual hosts (or the main host), a structure is defined that holds the information related to each host. This structure, server_rec, is defined in include/httpd.h:

struct server_rec { /** The process this server is running in */ process_rec *process; /** The next server in the list */ server_rec *next; /** The name of the server */ const char *defn_name; /** The line of the config file that the server was defined on */ unsigned defn_line_number; /* Contact information */ /** The admin's contact information */ char *server_admin; /** The server hostname */ char *server_hostname; /** for redirects, etc. */ apr_port_t port; /* Log files --- note that transfer log is now in the modules... */ /** The name of the error log */ char *error_fname; /** A file descriptor that references the error log */ apr_file_t *error_log; /** The log level for this server */ int loglevel; /* Module-specific configuration for server, and defaults... */ /** true if this is the virtual server */ int is_virtual; /** Config vector containing pointers to modules' per-server config * structures. */ struct ap_conf_vector_t *module_config; /** MIME type info, etc., before we start checking per-directory info */ struct ap_conf_vector_t *lookup_defaults; /* Transaction handling */ /** I haven't got a clue */ server_addr_rec *addrs; /** Timeout, in seconds, before we give up */ int timeout; ...