+ if (client->stream->mark_pool != NULL) {
+ client->fwmark = client->stream->mark_pool->get_mark();
+ } else {
+ client->fwmark = 0; // No mark.
+ }
+ if (setsockopt(client->sock, SOL_SOCKET, SO_MARK, &client->fwmark, sizeof(client->fwmark)) == -1) {
+ if (client->fwmark != 0) {
+ perror("setsockopt(SO_MARK)");
+ }
+ }