goahead重要结构体！

typedef struct {
    char            host[64];                /* Host name */
    ringq_t            inBuf;                    /* Input ring queue */
    ringq_t            outBuf;                    /* Output ring queue */
    ringq_t            lineBuf;                /* Line ring queue */
    socketAccept_t    accept;                    /* Accept handler */
    socketHandler_t    handler;                /* User I/O handler */
    int                handler_data;            /* User handler data */
    int                handlerMask;            /* Handler events of interest */
    int                sid;                    /* Index into socket[] */
    int                port;                    /* Port to listen on */
    int                flags;                    /* Current state flags */
    int                sock;                    /* Actual socket handle */
    int                fileHandle;                /* ID of the file handler */
    int                interestEvents;            /* Mask of events to watch for */
    int                currentEvents;            /* Mask of ready events (FD_xx) */
    int                selectEvents;            /* Events being selected */
    int                saveMask;                /* saved Mask for socketFlush */
    int                error;                    /* Last error */
} socket_t;

typedef void (*socketHandler_t)(int sid, int mask, int data);
typedef int (*socketAccept_t)(int sid, char *ipaddr, int port, 
int listenSid);

socket_t结构体链表用于保存从sock层接收的数据！

typedef struct websRec {
    ringq_t            header;                /* Header dynamic string */
    time_t            since;                /* Parsed if-modified-since time */
    sym_fd_t        cgiVars;            /* CGI standard variables */
    sym_fd_t        cgiQuery;            /* CGI decoded query string */
    time_t            timestamp;            /* Last transaction with browser */
    int                timeout;            /* Timeout handle */
    char_t            ipaddr[32];            /* Connecting ipaddress */
    char_t            ifaddr[32];            /* Local interface ipaddress */
    char_t            type[64];            /* Mime type */
    char_t            *dir;                /* Directory containing the page */
    char_t            *path;                /* Path name without query */
    char_t            *url;                /* Full request url */
    char_t            *host;                /* Requested host */
    char_t            *lpath;                /* Cache local path name */
    char_t            *query;                /* Request query */
    char_t            *decodedQuery;        /* Decoded request query */
    char_t            *authType;            /* Authorization type (Basic/DAA) */
    char_t            *password;            /* Authorization password */
    char_t            *userName;            /* Authorization username */
    char_t            *cookie;            /* Cookie string */
    char_t            *userAgent;            /* User agent (browser) */
    char_t            *protocol;            /* Protocol (normally HTTP) */
    char_t            *protoVersion;        /* Protocol version */
    int                sid;                /* Socket id (handler) */
    int                listenSid;            /* Listen Socket id */
    int                port;                /* Request port number */
    int                state;                /* Current state */
    int                flags;                /* Current flags -- see above */
    int                code;                /* Request result code */
    int                clen;                /* Content length */
    int                wid;                /* Index into webs */
    char_t            *cgiStdin;            /* filename for CGI stdin */
    int                docfd;                /* Document file descriptor */
    int                numbytes;            /* Bytes to transfer to browser */
    int                written;            /* Bytes actually transferred */
    int                has_firmware_upload_clean; /* flag for firmware upload */
    void            (*writeSocket)(struct websRec *wp);
#ifdef DIGEST_ACCESS_SUPPORT
    char_t            *realm;        /* usually the same as "host" from websRec */
    char_t            *nonce;        /* opaque-to-client string sent by server */
    char_t            *digest;    /* digest form of user password */
    char_t            *uri;        /* URI found in DAA header */
    char_t            *opaque;    /* opaque value passed from server */
    char_t            *nc;        /* nonce count */
    char_t            *cnonce;    /* check nonce */
    char_t            *qop;        /* quality operator */
#endif
#ifdef WEBS_SSL_SUPPORT
    websSSL_t        *wsp;        /* SSL data structure */
#endif
} websRec;

typedef websRec    *webs_t;
typedef websRec websType;

webs_t web层数据结构！



/*
 * Ring queue buffer structure
 */
typedef struct {
unsigned char *buf; /* Holding buffer for data */
unsigned char *servp; /* Pointer to start of data */
unsigned char *endp; /* Pointer to end of data */
unsigned char *endbuf; /* Pointer to end of buffer */
int buflen; /* Length of ring queue */
int maxsize; /* Maximum size */
int increment; /* Growth increment */
} ringq_t;