commit 369c793ab577c5ab2f27c2e8dbbf77b3079cb7bb
parent 8de6f974d0fe210e03e891b365613e0bc4a2ceea
Author: t3serakt <t3ss@posteo.de>
Date: Thu, 2 May 2024 16:55:25 +0200
NAT: Added missing missing files
Diffstat:
2 files changed, 210 insertions(+), 0 deletions(-)
diff --git a/src/include/gnunet_nat_lib.h b/src/include/gnunet_nat_lib.h
@@ -0,0 +1,91 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2024 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+#if !defined (__GNUNET_UTIL_LIB_H_INSIDE__)
+#error "Only <gnunet_util_lib.h> can be included directly."
+#endif
+
+/**
+ * @addtogroup Backbone
+ * @{
+ *
+ * @file NAT traversal
+ * @author t3sserakt
+ *
+ * @defgroup nat NAT traversal
+ *
+ * @{
+ */
+#ifndef GNUNET_NAT_LIB_H
+#define GNUNET_NAT_LIB_H
+
+struct GNUNET_BurstSync
+{
+ /**
+ * The avarage RTT for the peer to communicate with.
+ */
+ struct GNUNET_TIME_RelativeNBO rtt_avarage;
+
+ /**
+ * Is this peer already ready to sync.
+ */
+ enum GNUNET_GenericReturnValue sync_ready;
+};
+
+struct GNUNET_StartBurstCls
+{
+ unsigned long long delay_factor;
+};
+
+/**
+ * Create @a GNUNET_BurstSync message.
+ *
+ * @param rtt_avarage The avarage RTT for the peer to communicate with.
+ * @param sync_ready Is this peer already ready to sync.
+ *
+ * @return The GNUNET_BurstSync message to send to the other peer.
+ */
+struct GNUNET_BurstSync *
+GNUNET_get_burst_sync_msg (struct GNUNET_TIME_Relative rtt_avarage,
+ enum GNUNET_GenericReturnValue sync_ready);
+
+
+/**
+ * Checks if we are ready and starts burst when we and the other peer is ready.
+ *
+ * @param rtt_avarage The avarage RTT for the peer to communicate with.
+ * @param sync_ready Is this peer already ready to sync.
+ * @param burst_sync The GNUNET_BurstSync from the other peer.
+ * @param task Task to be executed if both peers are ready.
+ * @param task_cls Closure for the task.
+ *
+ * @return Are we burst ready. This is independent from the other peer being ready.
+ */
+enum GNUNET_GenericReturnValue
+GNUNET_is_burst_ready (struct GNUNET_TIME_Relative rtt_avarage,
+ struct GNUNET_BurstSync *burst_sync,
+ GNUNET_SCHEDULER_TaskCallback task,
+ struct GNUNET_StartBurstCls *task_cls);
+
+#endif
+
+/** @} */ /* end of group */
+
+/** @} */ /* end of group addition to backbone */
diff --git a/src/lib/util/nat.c b/src/lib/util/nat.c
@@ -0,0 +1,119 @@
+/*
+ This file is part of GNUnet.
+ Copyright (C) 2024 GNUnet e.V.
+
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+ SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @file util/nat.c
+ * @brief Library for NAT traversal related functonality.
+ * @author t3sserakt
+ */
+
+
+#include "platform.h"
+#include "gnunet_util_lib.h"
+
+
+#define LOG(kind, ...) GNUNET_log_from (kind, "util-nat", __VA_ARGS__)
+
+/**
+ * Difference of the avarage RTT for the DistanceVector calculate by us and the target
+ * we are willing to accept for starting the burst.
+ */
+#define RTT_DIFF \
+ GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1)
+
+/**
+ * Create @a GNUNET_BurstSync message.
+ *
+ * @param rtt_avarage The avarage RTT for the peer to communicate with.
+ * @param sync_ready Is this peer already ready to sync.
+ */
+struct GNUNET_BurstSync *
+GNUNET_get_burst_sync_msg (struct GNUNET_TIME_Relative rtt_avarage,
+ enum GNUNET_GenericReturnValue sync_ready)
+{
+ struct GNUNET_BurstSync *burst_sync;
+
+ burst_sync->rtt_avarage = GNUNET_TIME_relative_hton (rtt_avarage);
+ burst_sync->sync_ready = sync_ready;
+
+ return burst_sync;
+}
+
+
+/**
+ * Checks if we are ready and starts burst when we and the other peer is ready.
+ *
+ * @param rtt_avarage The avarage RTT for the peer to communicate with.
+ * @param burst_sync The GNUNET_BurstSync from the other peer.
+ * @param task Task to be executed if both peers are ready.
+ * @param task_cls Closure for the task.
+ *
+ * @return Are we burst ready. This is independent from the other peer being ready.
+ */
+enum GNUNET_GenericReturnValue
+GNUNET_is_burst_ready (struct GNUNET_TIME_Relative rtt_avarage,
+ struct GNUNET_BurstSync *burst_sync,
+ GNUNET_SCHEDULER_TaskCallback task,
+ struct GNUNET_StartBurstCls *task_cls)
+{
+ struct GNUNET_TIME_Relative other_rtt;
+ struct GNUNET_TIME_Relative rel1;
+ struct GNUNET_TIME_Relative rel2;
+
+ other_rtt = GNUNET_TIME_relative_ntoh (burst_sync->rtt_avarage);
+ rel1 = GNUNET_TIME_relative_subtract (other_rtt, rtt_avarage);
+ rel2 = GNUNET_TIME_relative_subtract (rtt_avarage, other_rtt);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "other sync ready %u, other rtt %llu and rtt %llu rel1 %llu rel2 %llu\n",
+ burst_sync->sync_ready,
+ other_rtt.rel_value_us,
+ rtt_avarage.rel_value_us,
+ rel1.rel_value_us,
+ rel2.rel_value_us);
+ if ((other_rtt.rel_value_us != GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us &&
+ rtt_avarage.rel_value_us != GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us) &&
+ rel1.rel_value_us < RTT_DIFF.rel_value_us &&
+ rel2.rel_value_us < RTT_DIFF.rel_value_us)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "other sync ready 1\n");
+ if (GNUNET_YES == burst_sync->sync_ready)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "other sync ready 2\n");
+ task_cls->delay_factor = 2;
+ task (task_cls->delay_factor);
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "other sync ready 3\n");
+ task_cls->delay_factor = 4;
+ task (task_cls->delay_factor);
+ }
+ return GNUNET_YES;
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "other sync ready 6\n");
+ return GNUNET_NO;
+ }
+}
