mirror of
https://github.com/ton-blockchain/ton
synced 2025-03-09 15:40:10 +00:00
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#include "Ack.h"
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namespace ton {
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namespace rldp2 {
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bool Ack::on_got_packet(td::uint32 seqno) {
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if (seqno > max_seqno) {
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td::uint32 diff = seqno - max_seqno;
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if (diff >= 32) {
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received_mask = 0;
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} else {
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received_mask <<= diff;
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}
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max_seqno = seqno;
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}
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td::uint32 offset = max_seqno - seqno;
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if (offset < 32) {
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td::uint32 mask = 1 << offset;
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if ((received_mask & mask) == 0) {
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received_count++;
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received_mask |= mask;
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return true;
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}
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}
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return false;
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}
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} // namespace rldp2
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} // namespace ton
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