Examples of com.sun.messaging.jmq.transport.httptunnel.HttpTunnelPacket

Package com.sun.messaging.jmq.transport.httptunnel

Examples of com.sun.messaging.jmq.transport.httptunnel.HttpTunnelPacket

com.sun.messaging.jmq.transport.httptunnel.HttpTunnelPacket
This class encapsulates the HTTP tunnel packet.

        if (response != HttpURLConnection.HTTP_OK) {
            is.close();
            throw new IOException("Failed to receive response");
        }


        HttpTunnelPacket ret = new HttpTunnelPacket();
        ret.readPacket(is);
        is.close();


        return ret;
    }

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        return ret;
    }


    public void run() {
        while (true) {
            HttpTunnelPacket p = null;


            synchronized (q) {
                while (q.isEmpty() && (stopThread == false)) {
                    try {
                        q.wait();

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     * Implements the connection establishment protocol.
     */
    public HttpTunnelConnection doConnect() throws IOException {
        URL connUrl = new URL(urlString + "?Type=connect" + urlParam);


        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(CONN_INIT_PACKET);
        p.setPacketBody(null);
        p.setConnId(0);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);


        try {
            HttpTunnelPacket resp = pushWorker.sendPacketDirect(connUrl, p, true);
            connId = resp.getConnId();


            String serverName = new String(resp.getPacketBody(), "UTF8");
            String newurlParam = "&" + serverName;


            if (!urlParam.equals("") && !newurlParam.equals(urlParam)) {
                throw new IOException("Unexpected new ServerName: " +
                    serverName);
            }


            if (urlParam.equals("")) {
                urlParam = newurlParam;
            }


            pushUrl = new URL(urlString + "?Type=push" + urlParam);
            pullUrl = new URL(urlString + "?Type=pull&ConnId=" + connId +
                    urlParam);


            while (conn == null) {
                Vector v = pullPackets();


                if ((v == null) || (v.size() == 0)) {
                    continue;
                }


                HttpTunnelPacket ack = (HttpTunnelPacket) v.elementAt(0);


                if (ack != null) {
                    switch (ack.getPacketType()) {
                    case CONN_SHUTDOWN:
                        throw new IOException("Connection refused");


                    case CONN_INIT_ACK:
                        handleConnInitAck(ack);

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            InputStream is = uc.getInputStream();


            while (true) {
                try {
                    HttpTunnelPacket p = new HttpTunnelPacket();
                    p.readPacket(is);
                    v.addElement(p);
                } catch (Exception e) {
                    if (v.size() > 1) {
                        break;
                    }


                    if (v.size() == 1) {
                        HttpTunnelPacket p = (HttpTunnelPacket) v.elementAt(0);


                        if (p.getPacketType() != NO_OP_PACKET) {
                            break;
                        }
                    }


                    // The 'pull' request came back empty handed..

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            return;
        }


        if ((System.currentTimeMillis() - lastConnectTime) > (conn.getConnectionTimeout() * 1000)) {
            // Abort the connection by generating a CONN_ABORT_PACKET.
            HttpTunnelPacket p = new HttpTunnelPacket();
            p.setPacketType(CONN_ABORT_PACKET);
            p.setConnId(connId);
            p.setSequence(0);
            p.setWinsize(0);
            p.setChecksum(0);
            p.setPacketBody(null);


            handleConnAbort(p);
        }
    }

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                int i;
                int j;


                for (j = v.size() - 1; j >= 0; j--) {
                    HttpTunnelPacket p = (HttpTunnelPacket) v.elementAt(j);


                    if (p.getPacketType() == DATA_PACKET) {
                        break;
                    }
                }


                // Now j points to the last data packet in v
                for (i = 0; i < v.size(); i++) {
                    HttpTunnelPacket p = (HttpTunnelPacket) v.elementAt(i);


                    if (p.getPacketType() == CONN_SHUTDOWN) {
                        // TBD: Connection aborted...
                    }


                    if (DEBUG) {
                        log("Received packet:" + p);
                    }


                    switch (p.getPacketType()) {
                    case CONN_CLOSE_PACKET:
                        handleConnClose(p);


                        break;

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        sendLinkInitPacket();
        sendListenStatePacket();
    }


    protected void sendListenStatePacket() {
        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(LISTEN_STATE_PACKET);
        p.setConnId(0);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);


        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);


        try {
            dos.writeUTF(serviceName);
            dos.writeBoolean(listenState);
            dos.flush();
            bos.flush();
        } catch (Exception e) {
            if (DEBUG || DEBUGLINK) {
                log("Got exception while sending LISTEN_STATE_PACKET " +
                    "packet: " + e.getMessage());
            }
        }


        byte[] buf = bos.toByteArray();
        p.setPacketBody(buf);


        sendPacket(p);
    }

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        sendPacket(p);
    }


    void sendLinkInitPacket() {
        // Help the servlet/web server recreate the connection table...
        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(LINK_INIT_PACKET);
        p.setConnId(0);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);


        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(bos);


        try {
            dos.writeUTF(serviceName);
            dos.writeInt(connTable.size());


            for (Enumeration e = connTable.elements(); e.hasMoreElements();) {
                HttpTunnelConnection conn = (HttpTunnelConnection) e.nextElement();
                dos.writeInt(conn.getConnId());
                dos.writeInt(conn.getPullPeriod());
            }


            dos.flush();
            bos.flush();
        } catch (Exception e) {
            if (DEBUG || DEBUGLINK) {
                log("Got exception while sending LINK_INIT_PACKET " +
                    "packet: " + e.getMessage());
            }
        }


        byte[] buf = bos.toByteArray();
        p.setPacketBody(buf);


        sendPacket(p);
    }

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                connids.addElement((String) e.nextElement());
            }
        }


        HttpTunnelConnection conn;
        HttpTunnelPacket pkt;
        String connId;


        for (int i = connids.size() - 1; i >= 0; i--) {
            connId = (String) connids.elementAt(i);
            conn = (HttpTunnelConnection) connTable.get(connId);

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        synchronized (connTable) {
            connTable.put(Integer.toString(connId), conn);
        }


        HttpTunnelPacket reply = new HttpTunnelPacket();
        reply.setPacketType(CONN_INIT_ACK);
        reply.setPacketBody(null);
        reply.setConnId(connId);
        reply.setSequence(0);
        reply.setWinsize(0);
        reply.setChecksum(0);


        sendPacket(reply);


        synchronized (listenQ) {
            listenQ.addElement(conn);

View Full Code Here

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com.sun.messaging.jmq.transport.httptunnel.servlet.HttpTunnelServlet

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