struct GNUNET_DNSSTUB_RequestSocket *rs;
struct GNUNET_NETWORK_FDSet *rset;
- rs = &ctx->sockets[GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
- DNS_SOCKET_MAX)];
+ for (unsigned int i=0;i<256;i++)
+ {
+ rs = &ctx->sockets[GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_NONCE,
+ DNS_SOCKET_MAX)];
+ if (NULL == rs->rc)
+ break;
+ }
+ if (NULL != rs->rc)
+ {
+ /* signal "failure" */
+ rs->rc (rs->rc_cls,
+ rs,
+ NULL,
+ 0);
+ rs->rc = NULL;
+ }
rs->timeout = GNUNET_TIME_relative_to_absolute (REQUEST_TIMEOUT);
switch (af)
{
return NULL;
rset = GNUNET_NETWORK_fdset_create ();
if (NULL != rs->dnsout4)
- GNUNET_NETWORK_fdset_set (rset, rs->dnsout4);
+ GNUNET_NETWORK_fdset_set (rset,
+ rs->dnsout4);
if (NULL != rs->dnsout6)
- GNUNET_NETWORK_fdset_set (rset, rs->dnsout6);
+ GNUNET_NETWORK_fdset_set (rset,
+ rs->dnsout6);
rs->read_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
REQUEST_TIMEOUT,
rset,
*
* @param ctx stub resolver to use
* @param sa the socket address
- * @param sa_len the socket length
+ * @param sa_len the length of @a sa
* @param request DNS request to transmit
- * @param request_len number of bytes in msg
+ * @param request_len number of bytes in @a request
* @param rc function to call with result
- * @param rc_cls closure for 'rc'
+ * @param rc_cls closure for @a rc
* @return socket used for the request, NULL on error
*/
struct GNUNET_DNSSTUB_RequestSocket *
if (NULL == (rs = get_request_socket (ctx,
sa->sa_family)))
return NULL;
+ GNUNET_assert (NULL == rs->rc);
GNUNET_memcpy (&rs->addr,
sa,
sa_len);
memset (&v4, 0, sizeof (v4));
memset (&v6, 0, sizeof (v6));
- if (1 == inet_pton (AF_INET, ctx->dns_exit, &v4.sin_addr))
+ if (1 == inet_pton (AF_INET,
+ ctx->dns_exit,
+ &v4.sin_addr))
{
salen = sizeof (v4);
v4.sin_family = AF_INET;
sa = (struct sockaddr *) &v4;
af = AF_INET;
}
- else if (1 == inet_pton (AF_INET6, ctx->dns_exit, &v6.sin6_addr))
+ else if (1 == inet_pton (AF_INET6,
+ ctx->dns_exit,
+ &v6.sin6_addr))
{
salen = sizeof (v6);
v6.sin6_family = AF_INET6;
GNUNET_break (0);
return NULL;
}
- if (NULL == (rs = get_request_socket (ctx, af)))
+ if (NULL == (rs = get_request_socket (ctx,
+ af)))
return NULL;
+ GNUNET_assert (NULL == rs->rc);
if (NULL != rs->dnsout4)
dnsout = rs->dnsout4;
else
return NULL;
}
GNUNET_memcpy (&rs->addr,
- sa,
- salen);
+ sa,
+ salen);
rs->addrlen = salen;
rs->rc = rc;
rs->rc_cls = rc_cls;
if (GNUNET_SYSERR ==
GNUNET_NETWORK_socket_sendto (dnsout,
request,
- request_len, sa, salen))
+ request_len,
+ sa,
+ salen))
GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
_("Failed to send DNS request to %s\n"),
GNUNET_a2s (sa, salen));
int len;
#ifndef MINGW
- if (0 != ioctl (GNUNET_NETWORK_get_fd (dnsout), FIONREAD, &len))
+ if (0 != ioctl (GNUNET_NETWORK_get_fd (dnsout),
+ FIONREAD,
+ &len))
{
/* conservative choice: */
len = UINT16_MAX;
addrlen = sizeof (addr);
memset (&addr, 0, sizeof (addr));
r = GNUNET_NETWORK_socket_recvfrom (dnsout,
- buf, sizeof (buf),
- (struct sockaddr*) &addr, &addrlen);
+ buf,
+ sizeof (buf),
+ (struct sockaddr*) &addr,
+ &addrlen);
if (-1 == r)
{
- GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "recvfrom");
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR,
+ "recvfrom");
GNUNET_NETWORK_socket_close (dnsout);
return GNUNET_SYSERR;
}
tc = GNUNET_SCHEDULER_get_task_context ();
if (0 == (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
{
+ /* signal "failure" (from timeout) */
+ if (NULL != rs->rc)
+ {
+ rs->rc (rs->rc_cls,
+ rs,
+ NULL,
+ 0);
+ rs->rc = NULL;
+ }
/* timeout */
cleanup_rs (rs);
return;
}
/* read and process ready sockets */
if ((NULL != rs->dnsout4) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, rs->dnsout4)) &&
- (GNUNET_SYSERR == do_dns_read (rs, rs->dnsout4)))
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready,
+ rs->dnsout4)) &&
+ (GNUNET_SYSERR == do_dns_read (rs,
+ rs->dnsout4)))
rs->dnsout4 = NULL;
if ((NULL != rs->dnsout6) &&
- (GNUNET_NETWORK_fdset_isset (tc->read_ready, rs->dnsout6)) &&
- (GNUNET_SYSERR == do_dns_read (rs, rs->dnsout6)))
+ (GNUNET_NETWORK_fdset_isset (tc->read_ready,
+ rs->dnsout6)) &&
+ (GNUNET_SYSERR == do_dns_read (rs,
+ rs->dnsout6)))
rs->dnsout6 = NULL;
/* re-schedule read task */
rset = GNUNET_NETWORK_fdset_create ();
if (NULL != rs->dnsout4)
- GNUNET_NETWORK_fdset_set (rset, rs->dnsout4);
+ GNUNET_NETWORK_fdset_set (rset,
+ rs->dnsout4);
if (NULL != rs->dnsout6)
- GNUNET_NETWORK_fdset_set (rset, rs->dnsout6);
+ GNUNET_NETWORK_fdset_set (rset,
+ rs->dnsout6);
rs->read_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
GNUNET_TIME_absolute_get_remaining (rs->timeout),
rset,
NULL,
- &read_response, rs);
+ &read_response,
+ rs);
GNUNET_NETWORK_fdset_destroy (rset);
}