+ std::string addr = tag->getString("address");
+ /* This must be >= sizeof(DWORD) on Windows */
+ const int enable = (addr.empty() || addr == "*") ? 0 : 1;
+ /* This must be before bind() */
+ setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char *>(&enable), sizeof(enable));
+ // errors ignored intentionally
+ }
+#endif
+
+ SocketEngine::SetReuse(fd);
+ int rv = SocketEngine::Bind(this->fd, bind_to);
+ if (rv >= 0)
+ rv = SocketEngine::Listen(this->fd, ServerInstance->Config->MaxConn);
+
+ int timeout = tag->getInt("defer", 0);
+ if (timeout && !rv)
+ {
+#if defined TCP_DEFER_ACCEPT
+ setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, sizeof(timeout));
+#elif defined SO_ACCEPTFILTER
+ struct accept_filter_arg afa;
+ memset(&afa, 0, sizeof(afa));
+ strcpy(afa.af_name, "dataready");
+ setsockopt(fd, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa));
+#endif
+ }
+
+ if (rv < 0)
+ {
+ int errstore = errno;
+ SocketEngine::Shutdown(this, 2);
+ SocketEngine::Close(this->GetFd());
+ this->fd = -1;
+ errno = errstore;
+ }
+ else
+ {
+ SocketEngine::NonBlocking(this->fd);
+ SocketEngine::AddFd(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+
+ this->ResetIOHookProvider();