void my_read() {
int blen, rc, qid;
char buf[1024];
struct nsnode *nsp = nshead;
blen = read(dnsfd, buf, sizeof(buf));
if (blen == -1) barf("read");
qid = dnsgetid(buf);
rc = dnsgetrcode(buf);
if (debug) fprintf(stderr, "got response %d %d (bytes %d)\n", qid, rc, blen);
nsp = nshead;
while(nsp) {
if (nsp->queryno == qid) {
if (debug) fprintf(stderr, "parsing response...\n");
if (rc == 0) {
dnsparse(buf, blen, dnsrec, (void*)nsp);
nsp->resprec = 1;
}
else if (rc == 3) {
nsp->resprec = -3;
}
else {
nsp->resprec = -1;
}
break;
}
nsp = nsp->next;
}
}
void wait_for_a_while(uv_idle_t* handle, int status)
{
counter++;
if (counter == 1)
{ ;//uv_idle_stop(handle);
dnsparse("www.baidu.com");
}
sleep(2);
printf("wait_for_a_while tid: %d\n", gettid());
}
/* Called when data is ready to read on socket s */
void my_read() {
int rc;
char buf[1024];
rc = read(dnsfd, buf, sizeof(buf));
if (rc == -1) barf("read");
write(2, "\ngot\n", 5);
my_log_data(buf, rc);
fprintf(stderr, "parsing...\n");
dnsparse(buf, rc, dnsrec, NULL);
fprintf(stderr, "parsed...\n");
close(dnsfd);
}
int hostresolv(pcs *pc, char *name, char *ipstr)
{
struct packet *m;
char data[512];
char *pdn = NULL;
int dlen;
struct timeval tv;
int ok;
int namelen;
int i;
char dname[64];
u_short magicid;
int reqcnt = 0;
int atype = 1;
int cnt4 = 0;
int cnt6 = 0;
u_char ip[20];
int tryagain = 0;
appenddomain(pc, dname, name);
while (reqcnt++ < 3) {
tryagain = 0;
magicid = random();
dlen = dnsrequest(magicid, dname, atype, data, &namelen);
if (dlen == 0)
return 0;
pdn = data + sizeof(dnshdr);
for (i = 0; i < 4 && !tryagain; i++) {
if (cnt4 < 2) {
m = dns4(pc, cnt4, data, dlen);
cnt4++;
if (m == NULL)
continue;
} else if (cnt6 < 2) {
m = dns6(pc, cnt6, data, dlen);
cnt6++;
if (m == NULL)
continue;
}
gettimeofday(&(tv), (void*)0);
enq(&pc->oq, m);
while (!timeout(tv, 1000) && !ctrl_c) {
delay_ms(1);
ok = 0;
while ((m = deq(&pc->iq)) != NULL && !ok) {
ok = dnsparse(m, magicid, dname, namelen, ip);
free(m);
}
if (ok == 2) {
tryagain = 1;
break;
}
if (ok == 6) {
atype = 28;
cnt4 = 0;
cnt6 = 0;
tryagain = 1;
break;
}
if (ok) {
strcpy(name, dname);
ip2str(ip, ipstr);
return 1;
}
}
}
}
return 0;
}
