74 lines
3.1 KiB
PHP
74 lines
3.1 KiB
PHP
<?php
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/*
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Copyright 2016-2018 Daniil Gentili
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(https://daniil.it)
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This file is part of MadelineProto.
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MadelineProto 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.
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MadelineProto 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.
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See the GNU Affero General Public License for more details.
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You should have received a copy of the GNU General Public License along with MadelineProto.
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If not, see <http://www.gnu.org/licenses/>.
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*/
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namespace danog\MadelineProto\VoIP;
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trait AckHandler
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{
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public function seqgt($s1, $s2)
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{
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return $s1 > $s2;
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}
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public function received_packet($datacenter, $last_ack_id, $packet_seq_no, $ack_mask)
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{
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if ($this->seqgt($packet_seq_no, $this->session_in_seq_no)) {
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$diff = $packet_seq_no - $this->session_in_seq_no;
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if ($diff > 31) {
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$this->received_timestamp_map = \array_fill(0, 32, 0);
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} else {
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$remaining = 32-$diff;
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for ($x = 0; $x < $remaining; $x++) {
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$this->received_timestamp_map[$diff+$x] = $this->received_timestamp_map[$x];
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}
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for ($x = 1; $x < $diff; $x++) {
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$this->received_timestamp_map[$x] = 0;
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}
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$this->received_timestamp_map[0] = \microtime(true);
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}
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$this->session_in_seq_no = $packet_seq_no;
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} elseif (($diff = $this->session_in_seq_no - $packet_seq_no) < 32) {
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if (!$this->received_timestamp_map[$diff]) {
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\danog\MadelineProto\Logger::log("Got duplicate $packet_seq_no");
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return false;
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}
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$this->received_timestamp_map[$diff] = \microtime(true);
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} else {
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\danog\MadelineProto\Logger::log("Packet $packet_seq_no is out of order and too late");
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return false;
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}
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if ($this->seqgt($last_ack_id, $this->session_out_seq_no)) {
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$diff = $last_ack_id - $this->session_out_seq_no;
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if ($diff > 31) {
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$this->remote_ack_timestamp_map = \array_fill(0, 32, 0);
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} else {
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$remaining = 32-$diff;
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for ($x = 0; $x < $remaining; $x++) {
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$this->remote_ack_timestamp_map[$diff+$x] = $this->remote_ack_timestamp_map[$x];
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}
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for ($x = 1; $x < $diff; $x++) {
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$this->remote_ack_timestamp_map[$x] = 0;
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}
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$this->remote_ack_timestamp_map[0] = \microtime(true);
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}
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$this->session_out_seq_no = $last_ack_id;
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for ($x = 1; $x < 32; $x++) {
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if (!$this->remote_ack_timestamp_map[$x] && ($ack_mask >> 32-$x) & 1) {
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$this->remote_ack_timestamp_map[$x] = \microtime(true);
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}
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}
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}
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return true;
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}
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}
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