[1410] | 1 | /* -------------------------------------------------------------------------
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| 2 | * BKG NTRIP Client
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| 3 | * -------------------------------------------------------------------------
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| 4 | *
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| 5 | * Class: bncNetQueryRtp
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| 6 | *
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[1411] | 7 | * Purpose: Blocking Network Requests (NTRIP Version 2 with RTSP)
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[1410] | 8 | *
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| 9 | * Author: L. Mervart
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| 10 | *
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| 11 | * Created: 27-Dec-2008
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| 12 | *
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| 13 | * Changes:
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| 14 | *
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| 15 | * -----------------------------------------------------------------------*/
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| 16 |
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| 17 | #include <iostream>
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| 18 | #include <iomanip>
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| 19 |
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| 20 | #include "bncnetqueryrtp.h"
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| 21 |
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| 22 | using namespace std;
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| 23 |
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| 24 | #define BNCVERSION "1.7"
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| 25 |
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| 26 | // Constructor
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| 27 | ////////////////////////////////////////////////////////////////////////////
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| 28 | bncNetQueryRtp::bncNetQueryRtp() {
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[1412] | 29 | _socket = 0;
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| 30 | _udpSocket = 0;
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[1414] | 31 | _eventLoop = new QEventLoop(this);
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[1410] | 32 | }
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| 33 |
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| 34 | // Destructor
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| 35 | ////////////////////////////////////////////////////////////////////////////
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| 36 | bncNetQueryRtp::~bncNetQueryRtp() {
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[1414] | 37 | delete _eventLoop;
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[1410] | 38 | delete _socket;
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[1412] | 39 | delete _udpSocket;
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[1410] | 40 | }
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| 41 |
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| 42 | //
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| 43 | ////////////////////////////////////////////////////////////////////////////
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| 44 | void bncNetQueryRtp::stop() {
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[1414] | 45 | _eventLoop->quit();
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[1410] | 46 | _status = finished;
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| 47 | }
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| 48 |
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| 49 | //
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| 50 | ////////////////////////////////////////////////////////////////////////////
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| 51 | void bncNetQueryRtp::waitForRequestResult(const QUrl&, QByteArray&) {
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| 52 | }
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| 53 |
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| 54 | //
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| 55 | ////////////////////////////////////////////////////////////////////////////
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| 56 | void bncNetQueryRtp::waitForReadyRead(QByteArray& outData) {
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[1414] | 57 |
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| 58 | // Wait Loop
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| 59 | // ---------
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| 60 | if (!_udpSocket->hasPendingDatagrams()) {
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| 61 | _eventLoop->exec();
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| 62 | }
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| 63 |
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| 64 | // Append Data
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| 65 | // -----------
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| 66 | QByteArray datagram;
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| 67 | datagram.resize(_udpSocket->pendingDatagramSize());
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| 68 | _udpSocket->readDatagram(datagram.data(), datagram.size());
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[1415] | 69 |
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[1416] | 70 | if (datagram.size() > 12) {
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| 71 | outData.append(datagram.mid(12));
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| 72 | }
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[1410] | 73 | }
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| 74 |
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| 75 | // Connect to Caster, send the Request
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| 76 | ////////////////////////////////////////////////////////////////////////////
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| 77 | void bncNetQueryRtp::startRequest(const QUrl& url, const QByteArray& gga) {
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| 78 |
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| 79 | const int timeOut = 5000;
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| 80 |
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| 81 | _status = running;
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| 82 |
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| 83 | delete _socket;
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| 84 | _socket = new QTcpSocket();
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| 85 |
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[1411] | 86 | // Default scheme
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| 87 | // --------------
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[1528] | 88 | _url = url;
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| 89 | _url.setScheme("rtsp");
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[1410] | 90 |
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| 91 | // Connect the Socket
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| 92 | // ------------------
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| 93 | QSettings settings;
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| 94 | QString proxyHost = settings.value("proxyHost").toString();
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| 95 | int proxyPort = settings.value("proxyPort").toInt();
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| 96 |
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| 97 | if ( proxyHost.isEmpty() ) {
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[1528] | 98 | _socket->connectToHost(_url.host(), _url.port());
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[1410] | 99 | }
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| 100 | else {
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| 101 | _socket->connectToHost(proxyHost, proxyPort);
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| 102 | }
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| 103 |
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[1411] | 104 | // Send Request 1
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| 105 | // --------------
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| 106 | if (_socket->waitForConnected(timeOut)) {
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[1528] | 107 | QString uName = QUrl::fromPercentEncoding(_url.userName().toAscii());
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| 108 | QString passW = QUrl::fromPercentEncoding(_url.password().toAscii());
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[1411] | 109 | QByteArray userAndPwd;
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| 110 |
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| 111 | if(!uName.isEmpty() || !passW.isEmpty()) {
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| 112 | userAndPwd = "Authorization: Basic " + (uName.toAscii() + ":" +
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| 113 | passW.toAscii()).toBase64() + "\r\n";
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| 114 | }
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[1418] | 115 |
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[1419] | 116 | // Setup the RTSP Connection
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| 117 | // -------------------------
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[1518] | 118 | delete _udpSocket;
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| 119 | _udpSocket = new QUdpSocket();
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| 120 | _udpSocket->bind(0);
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| 121 | connect(_udpSocket, SIGNAL(readyRead()), _eventLoop, SLOT(quit()));
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| 122 | QByteArray clientPort = QString("%1").arg(_udpSocket->localPort()).toAscii();
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| 123 |
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| 124 | QByteArray reqStr;
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[1528] | 125 | reqStr = "SETUP " + _url.toEncoded() + " RTSP/1.0\r\n"
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[1518] | 126 | + "CSeq: 1\r\n"
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| 127 | + "Ntrip-Version: Ntrip/2.0\r\n"
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| 128 | + "Ntrip-Component: Ntripclient\r\n"
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| 129 | + "User-Agent: NTRIP BNC/" BNCVERSION "\r\n"
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| 130 | + "Transport: RTP/GNSS;unicast;client_port=" + clientPort + "\r\n"
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| 131 | + userAndPwd
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| 132 | + "\r\n";
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| 133 | _socket->write(reqStr, reqStr.length());
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| 134 |
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| 135 | // Read Server Answer 1
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| 136 | // --------------------
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| 137 | if (_socket->waitForBytesWritten(timeOut)) {
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| 138 | if (_socket->waitForReadyRead(timeOut)) {
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| 139 | QTextStream in(_socket);
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| 140 | QByteArray session;
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[1520] | 141 | QByteArray serverPort;
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[1518] | 142 | QString line = in.readLine();
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| 143 | while (!line.isEmpty()) {
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| 144 | if (line.indexOf("Session:") == 0) {
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| 145 | session = line.mid(9).toAscii();
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[1411] | 146 | }
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[1520] | 147 | int iSrv = line.indexOf("server_port=");
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| 148 | if (iSrv != -1) {
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| 149 | serverPort = line.mid(iSrv+12).toAscii();
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| 150 | }
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[1518] | 151 | line = in.readLine();
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| 152 | }
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| 153 |
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| 154 | // Send Request 2
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| 155 | // --------------
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| 156 | if (!session.isEmpty()) {
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[1520] | 157 |
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| 158 | // Send initial RTP packet for firewall handling
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| 159 | // ---------------------------------------------
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| 160 | if (!serverPort.isEmpty()) {
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| 161 | int sessInt = session.toInt();
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| 162 | char rtpbuffer[12];
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| 163 | rtpbuffer[0] = (2<<6);
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| 164 | rtpbuffer[1] = 96;
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| 165 | rtpbuffer[2] = 0;
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| 166 | rtpbuffer[3] = 0;
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| 167 | rtpbuffer[4] = 0;
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| 168 | rtpbuffer[5] = 0;
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| 169 | rtpbuffer[6] = 0;
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| 170 | rtpbuffer[7] = 0;
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| 171 | rtpbuffer[8] = (sessInt>>24)&0xFF;
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| 172 | rtpbuffer[9] = (sessInt>>16)&0xFF;
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| 173 | rtpbuffer[10] = (sessInt>>8)&0xFF;
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| 174 | rtpbuffer[11] = (sessInt)&0xFF;
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| 175 |
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[1522] | 176 | _udpSocket->writeDatagram(rtpbuffer, 12,
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| 177 | _socket->peerAddress(), serverPort.toInt());
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[1520] | 178 | }
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| 179 |
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[1528] | 180 | reqStr = "PLAY " + _url.toEncoded() + " RTSP/1.0\r\n"
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[1518] | 181 | + "CSeq: 2\r\n"
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| 182 | + "Session: " + session + "\r\n"
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| 183 | + "\r\n";
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| 184 | _socket->write(reqStr, reqStr.length());
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| 185 |
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| 186 | // Read Server Answer 2
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| 187 | // --------------------
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| 188 | if (_socket->waitForBytesWritten(timeOut)) {
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| 189 | if (_socket->waitForReadyRead(timeOut)) {
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| 190 | QTextStream in(_socket);
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| 191 | line = in.readLine();
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| 192 | while (!line.isEmpty()) {
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| 193 | if (line.indexOf("200 OK") != -1) {
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[1528] | 194 | emit newMessage(_url.host().toAscii() +
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| 195 | _url.path().toAscii() +
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[1518] | 196 | ": UDP connection established", true);
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| 197 | return;
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| 198 | }
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[1419] | 199 | line = in.readLine();
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[1411] | 200 | }
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| 201 | }
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| 202 | }
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| 203 | }
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| 204 | }
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| 205 | }
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[1410] | 206 | }
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| 207 |
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[1411] | 208 | delete _socket;
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| 209 | _socket = 0;
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| 210 | _status = error;
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[1410] | 211 | }
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| 212 |
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