/**
* Looking our own hostname.
*
* @param af AF_INET or AF_INET6; use AF_UNSPEC for "any"
* @param callback function to call with addresses
* @param cls closure for callback
* @param timeout how long to try resolving
* @return handle that can be used to cancel the request, NULL on error
*/
struct GNUNET_RESOLVER_RequestHandle *
GNUNET_RESOLVER_hostname_resolve (int af,
struct GNUNET_TIME_Relative timeout,
GNUNET_RESOLVER_AddressCallback callback,
void *cls)
{
char hostname[GNUNET_OS_get_hostname_max_length () + 1];
if (0 != gethostname (hostname, sizeof (hostname) - 1))
{
LOG_STRERROR (GNUNET_ERROR_TYPE_ERROR | GNUNET_ERROR_TYPE_BULK,
"gethostname");
return NULL;
}
LOG (GNUNET_ERROR_TYPE_DEBUG, "Resolving our hostname `%s'\n", hostname);
return GNUNET_RESOLVER_ip_get (hostname, af, timeout, callback, cls);
}
/**
* Create a connection handle by (asynchronously) connecting to a host.
* This function returns immediately, even if the connection has not
* yet been established. This function only creates TCP connections.
*
* @param cfg configuration to use
* @param hostname name of the host to connect to
* @param port port to connect to
* @return the connection handle
*/
struct GNUNET_CONNECTION_Handle *
GNUNET_CONNECTION_create_from_connect (const struct GNUNET_CONFIGURATION_Handle
*cfg, const char *hostname,
uint16_t port)
{
struct GNUNET_CONNECTION_Handle *connection;
GNUNET_assert (0 < strlen (hostname)); /* sanity check */
connection = GNUNET_malloc (sizeof (struct GNUNET_CONNECTION_Handle));
connection->cfg = cfg;
connection->write_buffer_size = GNUNET_SERVER_MIN_BUFFER_SIZE;
connection->write_buffer = GNUNET_malloc (connection->write_buffer_size);
connection->port = port;
connection->hostname = GNUNET_strdup (hostname);
connection->dns_active =
GNUNET_RESOLVER_ip_get (connection->hostname, AF_UNSPEC,
GNUNET_CONNECTION_CONNECT_RETRY_TIMEOUT,
&try_connect_using_address, connection);
return connection;
}