> Can you post a code snippet. It sounds like you're doing everything
right.
> -Marc
Here's the code gutted. I had to remove a lot to get through the
mailing list quota which is in holding. I hope there's enough left to
find the problem.
Thanks,
Eric
/* struct to save resolve callback info, to pass to query */
struct resolve_callback_userdata
{
uint16_t port;
struct sockaddr_in address;
char fullname[kDNSServiceMaxDomainName]; /* 1005 bytes */
};
void resolve_callback(
/* snip ... */
)
{
struct resolve_callback_userdata* udata;
/* Save the port and full name into the user data for later */
udata = (struct resolve_callback_userdata*)context;
udata->port = port;
strncpy(udata->fullname, fullname, kDNSServiceMaxDomainName);
}
int main(int argc, char * argv[])
{
struct resolve_callback_userdata query_data;
/* Browse stuff snipped out */
dns_error = DNSServiceResolve(
&resolve_ref,
0,
rdata_array[0].interfaceIndex,
rdata_array[0].name,
rdata_array[0].regtype,
rdata_array[0].domain,
&resolve_callback,
&query_data
);
/* Select loop for DNSServiceProcessResult cut */
dns_error = DNSServiceQueryRecord(
&query_ref,
0,
0,
query_data.fullname,
1,
1,
&query_record_callback,
&query_data
);
/* Do I cancel the resolve now, or do I wait for query to end?
DNSServiceRefDeallocate(resolve_ref);
*/
/* One more select loop for query */
{
struct timeval tv;
fd_set readfds;
int result;
fprintf(stderr, "Testing userdata return\n");
fprintf(stderr, "Testing Port userdata return: %d\n",
ntohs(query_data.port));
/* I don't want to wait around forever trying to resolve this */
tv.tv_sec = 30;
tv.tv_usec = 500000;
query_socket = DNSServiceRefSockFD(query_ref);
if(query_socket < 0)
{
die("Error on DNSServiceRefSockFD\n");
}
FD_ZERO(&readfds);
FD_SET(query_socket, &readfds);
fprintf(stderr, "Hoping to ProcessResult (stuck here)\n");
result = select(query_socket+1, &readfds, NULL, NULL, &tv);
if(result == 0)
{
die("Result is 0...timeout\n");
}
else if(result < 0)
{
fprintf(stderr, "Result is < 0: %d, errnoo %d %s\n", result, errno,
strerror(errno));
die("Bailed\n");
}
if (FD_ISSET(query_socket, &readfds))
{
dns_error = DNSServiceProcessResult(query_ref);
if( dns_error < 0)
{
die("Aborted at DNSServiceProcessResult\n");
}
}
}
DNSServiceRefDeallocate(query_ref);
}
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