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implemented UDP tracker protocol & re-tracker proxy-announcing for UDP

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mykola2312 2022-04-03 18:12:04 +03:00
parent f152dba437
commit a0c2ddfd1b
1 changed files with 49 additions and 3 deletions
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52
tracker.php
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@ -2,8 +2,6 @@
require("../php/config.php");
require("bencoder.php");
require("peer.php");
$ANN_USERAGENT = "Transmission/3.00";
$ANN_PEER_ID = "01234567890123456789";
$DB_NAME = "torrent";
class Tracker {
@ -34,7 +32,7 @@ class Tracker {
return false;
}
public function doHttpAnnounce($infoHash, $peerIp, $peerPort, $peerId = null, $uploaded = 0, $downloaded = 0, $left = 0) {
protected function doHttpAnnounce($infoHash, $peerIp, $peerPort, $peerId = null, $uploaded = 0, $downloaded = 0, $left = 0) {
$peers = array();
$passkey = is_null($this->passkey) ? "" : $this->passkey . "&";
@ -80,9 +78,57 @@ class Tracker {
return $peers;
}
protected function doUdpAnnounce($infoHash, $peerIp, $peerPort, $peerId = null, $uploaded = 0, $downloaded = 0, $left = 0) {
$peers = array();
$addr = gethostbyname($this->host);
$port = $this->port;
$key = 0;
$sockfd = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_set_option($sockfd, SOL_SOCKET, SO_RCVTIMEO,
array("sec" => 1, "usec" => 0));
$transaction_id = rand();
$req = pack("JNN", 4497486125440, 0, $transaction_id);
socket_sendto($sockfd, $req, 16, 0, $addr, $port);
$recv = socket_recvfrom($sockfd, $buf, 16, 0, $addr, $port);
if ($recv == false || $recv == 0) {
return false;
}
$res = unpack("Naction/Ntransaction_id/Jconnection_id", $buf);
$connection_id = $res["connection_id"];
$transaction_id = rand();
$req = pack("JNN", $connection_id, 1, $transaction_id)
. hex2bin($infoHash)
. (is_null($peerId) ? self::ANN_PEER_ID : $peerId)
. pack("JJJNNNNn", $downloaded, $uploaded, $left,
0, $peerIp, $key, -1, $peerPort);
socket_sendto($sockfd, $req, 98, 0, $addr, $port);
$recv = socket_recvfrom($sockfd, $buf, 65535, 0, $addr, $port);
if ($recv == false || $recv == 0) {
return false;
}
$res = unpack("Naction/Ntransaction_id/Ninterval/Nleechers/Nseeders", $buf);
//$count = $res["leechers"] + $res["seeders"];
$count = ($res - 20) / 6;
for ($i = 0; $i < $count; $i++) {
$peer = unpack("Nip/nport", $buf, 20 + $i*6);
array_push($peers, new Peer($infoHash,
long2ip($peer["ip"]), $peer["port"]));
}
socket_close($sockfd);
return $peers;
}
public function announce($infoHash, $peerIp, $peerPort, $peerId = null, $uploaded = 0, $downloaded = 0, $left = 0) {
if ($this->proto == "http" || $this->proto == "https") {
return $this->doHttpAnnounce($infoHash, $peerIp, $peerPort, $peerId, $uploaded, $downloaded, $left);
} else if ($this->proto == "udp") {
return $this->doUdpAnnounce($infoHash, $peerIp, $peerPort, $peerId, $uploaded, $downloaded, $left);
}
return false;