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#ifndef QWSSOCKET_H
#define QWSSOCKET_H
#include <QTcpSocket>
#include <QHostAddress>
#include <QTime>
enum EWebsocketVersion
{
WS_VUnknow = -1,
WS_V0 = 0,
WS_V4 = 4,
WS_V5 = 5,
WS_V6 = 6,
WS_V7 = 7,
WS_V8 = 8,
WS_V13 = 13
};
class QWsSocket : public QAbstractSocket
{
Q_OBJECT
friend class QWsServer;
public:
enum EOpcode
{
OpContinue = 0x0,
OpText = 0x1,
OpBinary = 0x2,
OpReserved3 = 0x3,
OpReserved4 = 0x4,
OpReserved5 = 0x5,
OpReserved6 = 0x6,
OpReserved7 = 0x7,
OpClose = 0x8,
OpPing = 0x9,
OpPong = 0xA,
OpReservedB = 0xB,
OpReservedV = 0xC,
OpReservedD = 0xD,
OpReservedE = 0xE,
OpReservedF = 0xF
};
enum ECloseStatusCode
{
NoCloseStatusCode = 0,
CloseNormal = 1000,
CloseGoingAway = 1001,
CloseProtocolError = 1002,
CloseDataTypeNotSupported = 1003,
CloseReserved1004 = 1004,
CloseMissingStatusCode = 1005,
CloseAbnormalDisconnection = 1006,
CloseWrongDataType = 1007,
ClosePolicyViolated = 1008,
CloseTooMuchData = 1009,
CloseMissingExtension = 1010,
CloseBadOperation = 1011,
CloseTLSHandshakeFailed = 1015
};
public:
// ctor
QWsSocket( QObject * parent = 0, QTcpSocket * socket = 0, EWebsocketVersion ws_v = WS_V13 );
// dtor
virtual ~QWsSocket();
// Public methods
EWebsocketVersion version();
QString resourceName();
QString host();
QString hostAddress();
int hostPort();
QString origin();
QString protocol();
QString extensions();
void setResourceName( QString rn );
void setHost( QString h );
void setHostAddress( QString ha );
void setHostPort( int hp );
void setOrigin( QString o );
void setProtocol( QString p );
void setExtensions( QString e );
qint64 write( const QString & string ); // write data as text
qint64 write( const QByteArray & byteArray ); // write data as binary
public slots:
void connectToHost( const QString & hostName, quint16 port, OpenMode mode = ReadWrite );
void connectToHost( const QHostAddress & address, quint16 port, OpenMode mode = ReadWrite );
void disconnectFromHost();
void abort( QString reason = QString() );
void ping();
signals:
void frameReceived(QString frame);
void frameReceived(QByteArray frame);
void pong(quint64 elapsedTime);
protected:
qint64 writeFrames ( const QList<QByteArray> & framesList );
qint64 writeFrame ( const QByteArray & byteArray );
protected slots:
virtual void close( ECloseStatusCode closeStatusCode = NoCloseStatusCode, QString reason = QString() );
void processDataV0();
void processDataV4();
void processHandshake();
void processTcpStateChanged( QAbstractSocket::SocketState socketState );
private:
enum EReadingState
{
HeaderPending,
PayloadLengthPending,
BigPayloadLenghPending,
MaskPending,
PayloadBodyPending,
CloseDataPending
};
// private vars
QTcpSocket * tcpSocket;
QByteArray currentFrame;
QTime pingTimer;
EWebsocketVersion _version;
QString _resourceName;
QString _host;
QString _hostAddress;
int _hostPort;
QString _origin;
QString _protocol;
QString _extensions;
bool serverSideSocket;
bool closingHandshakeSent;
bool closingHandshakeReceived;
EReadingState readingState;
EOpcode opcode;
bool isFinalFragment;
bool hasMask;
quint64 payloadLength;
QByteArray maskingKey;
ECloseStatusCode closeStatusCode;
static const QString regExpAcceptStr;
static const QString regExpUpgradeStr;
static const QString regExpConnectionStr;
QString handshakeResponse;
QString key;
public:
// Static functions
static QByteArray generateMaskingKey();
static QByteArray generateMaskingKeyV4( QString key, QString nonce );
static QByteArray mask( QByteArray & data, QByteArray & maskingKey );
static QList<QByteArray> composeFrames( QByteArray byteArray, bool asBinary = false, int maxFrameBytes = 0 );
static QByteArray composeHeader( bool end, EOpcode opcode, quint64 payloadLength, QByteArray maskingKey = QByteArray() );
static QString composeOpeningHandShake( QString resourceName, QString host, QString origin, QString extensions, QString key );
// static vars
static int maxBytesPerFrame;
};
#endif // QWSSOCKET_H
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