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.

        }


        // Also, tell the servlet to do the same...
        // Note : this packet is NOT delivered to the other end.
        // It just tells the servlet to cleanup its connTable entry..
        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(CONN_SHUTDOWN);
        p.setPacketBody(null);
        p.setConnId(connId);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);


        sendPacket(p);
    }

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        sendPacket(p);
    }


    private static HttpTunnelPacket genAbortPacket(int connId) {
        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(CONN_ABORT_PACKET);
        p.setConnId(connId);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);
        p.setPacketBody(null);


        return p;
    }

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    private void sendNoOp(HttpServletResponse response) {
        try {
            ServletOutputStream sos = response.getOutputStream();


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


            p.writePacket(sos);
        } catch (Exception e) { /* Ignore */
        }
    }

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     * we have packet acknowledgements and retransmissions...
     */
    public void handlePull(HttpServletRequest request,
        HttpServletResponse response, String connIdStr, String serverName) {
        if (ONE_PACKET_PER_REQUEST) {
            HttpTunnelPacket p = linkTable.waitForPacket(connIdStr, serverName);


            if (p == null) {
                return;
            }


            try {
                ServletOutputStream sos = response.getOutputStream();
                p.writePacket(sos);
            } catch (Exception e) {
                // Obvious failure - resend the packet.
                linkTable.retrySendPacket(p, connIdStr, serverName);
            }
        } else {
            Vector v = linkTable.waitForPackets(connIdStr, serverName);


            if ((v == null) || (v.size() == 0)) {
                sendNoOp(response);


                return;
            }


            try {
                ServletOutputStream sos = response.getOutputStream();


                for (int i = 0; i < v.size(); i++) {
                    HttpTunnelPacket p = (HttpTunnelPacket) v.elementAt(i);
                    p.writePacket(sos);
                }
            } catch (Exception e) {
                // Obvious failure - resend the packet.
                linkTable.retrySendPackets(v, connIdStr, serverName);
            }

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        int length = request.getContentLength();


        if (length > 0) {
            try {
                ServletInputStream sis = request.getInputStream();
                HttpTunnelPacket p = new HttpTunnelPacket();
                p.readPacket(sis);


                linkTable.sendPacket(p, serverName);
            } catch (Exception e) {
            }
        }

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    public void handleConnect(HttpServletRequest request,
        HttpServletResponse response, String serverName) {
        int length = request.getContentLength();


        if (length > 0) {
            HttpTunnelPacket p = null;


            try {
                ServletInputStream sis = request.getInputStream();
                p = new HttpTunnelPacket();
                p.readPacket(sis);
            } catch (Exception e) {
                return;
            }


            if (p == null) {
                return;
            }


            if (serverName == null) {
                serverName = linkTable.getDefaultServer();
            }


            if (serverName == null) {
                return;
            }


            if (linkTable.getListenState(serverName) == false) {
                return;
            }


            // Allocate a new connection ID and setup pullQ...
            int connId = linkTable.createNewConn(serverName);


            if (connId == -1) {
                return;
            }


            p.setConnId(connId);


            try {
                p.setPacketBody(("ServerName=" + serverName).getBytes("UTF8"));


                // Echo the connection request back to the client side
                // driver with the correct connId, so that it can
                // start sending the pull requests...
                ServletOutputStream sos = response.getOutputStream();
                p.writePacket(sos);


                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                DataOutputStream dos = new DataOutputStream(bos);
                dos.writeUTF("ServerName=" + serverName);
                dos.writeUTF(request.getRemoteAddr());
                dos.flush();
                bos.flush();


                p.setPacketBody(bos.toByteArray());
                // Forward the connection request to server side driver
                // with the correct connId.
                linkTable.sendPacket(p, serverName);
            } catch (Exception e) {
                servletContext.log(servletName + ": client connect: " +

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            }
        }
    }


    private static HttpTunnelPacket genAbortPacket(int connId) {
        HttpTunnelPacket p = new HttpTunnelPacket();
        p.setPacketType(CONN_ABORT_PACKET);
        p.setConnId(connId);
        p.setSequence(0);
        p.setWinsize(0);
        p.setChecksum(0);
        p.setPacketBody(null);


        return p;
    }

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        return p;
    }


    private void abortClientConnection(int connId, Vector pullQ) {
        HttpTunnelPacket p = genAbortPacket(connId);


        synchronized (pullQ) {
            pullQ.addElement(p);
            pullQ.notify();
        }

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            pullQ.notify();
        }
    }


    private void abortServerConnection(int connId, Connection conn) {
        HttpTunnelPacket p = genAbortPacket(connId);


        conn.getServerLink().sendPacket(p);
    }

View Full Code Here

            return genAbortPacket(connId);
        }


        conn.setInUse(true);


        HttpTunnelPacket p = waitForPacket(connKey, conn);


        conn.setInUse(false);


        return p;
    }

View Full Code Here

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

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