D

daemon_atrestart

The daemon_atrestart function enables you to register a callback function named by fn to be used when the server terminates. Use this function when you need a callback function to deallocate resources allocated by an initialization function. The daemon_atrestart function is a generalization of the magnus_atrestart function.

The magnus.conf directives TerminateTimeout and ChildRestartCallback also affect the callback of NSAPI functions.

Syntax

void daemon_atrestart(void (*fn)(void *), void *data);

Returns

void

Parameters

void (* fn) (void *) is the callback function.

void *data is the parameter passed to the callback function when the server is restarted.

Example

/* Register the log_close function, passing it NULL */ /* to close *a log 
	file when the server is *//* restarted or shutdown. 
	*/daemon_atrestart(log_close, NULL);NSAPI_PUBLIC void log_close(void *parameter)
	{system_fclose(global_logfd);}

dns_set_hostent

The dns_set_hostent function sets the DNS host entry information in the request. If this function set, the proxy won’t try to resolve host information by itself. Instead, the function will use this host information that was already resolved within custom DNS resolution SAF.

Syntax

int dns_set_hostent(struct hostent *hostent, Session *sn, Request *rq);

Returns

REQ_PROCEED on success or REQ_ABORTED on error.

Parameters

struct hostent *hostent is a pointer to the host entry structure.

Session *sn identifies the Session structure.

Request *rq identifies the Request structure.

Example

int my_dns_func(pblock *pb, Session *sn, Request *rq)
{
    char *host = pblock_findval("dns-host", rq->vars);
    struct hostent *hostent;
    hostent = gethostbyname(host);//replace with custom DNS implementation
    dns_set_hostent(hostent, sn, rq);
    return REQ_PROCEED;
}