Examples with ImmediatePooledByteBuffer io.undertow.util.ImmediatePooledByteBuffer used on opensource projects

Example 1 with ImmediatePooledByteBuffer

use of io.undertow.util.ImmediatePooledByteBuffer in project undertow by undertow-io.

the class SavedRequest method tryRestoreRequest.

public static void tryRestoreRequest(final HttpServerExchange exchange, HttpSession session) {
    if (session instanceof HttpSessionImpl) {
        Session underlyingSession;
        if (System.getSecurityManager() == null) {
            underlyingSession = ((HttpSessionImpl) session).getSession();
        } else {
            underlyingSession = AccessController.doPrivileged(new HttpSessionImpl.UnwrapSessionAction(session));
        }
        SavedRequest request = (SavedRequest) underlyingSession.getAttribute(SESSION_KEY);
        if (request != null) {
            if (request.requestPath.equals(exchange.getRelativePath()) && exchange.isRequestComplete()) {
                UndertowLogger.REQUEST_LOGGER.debugf("restoring request body for request to %s", request.requestPath);
                exchange.setRequestMethod(request.method);
                Connectors.ungetRequestBytes(exchange, new ImmediatePooledByteBuffer(ByteBuffer.wrap(request.data, 0, request.dataLength)));
                underlyingSession.removeAttribute(SESSION_KEY);
                //clear the existing header map of everything except the connection header
                //TODO: are there other headers we should preserve?
                Iterator<HeaderValues> headerIterator = exchange.getRequestHeaders().iterator();
                while (headerIterator.hasNext()) {
                    HeaderValues header = headerIterator.next();
                    if (!header.getHeaderName().equals(Headers.CONNECTION)) {
                        headerIterator.remove();
                    }
                }
                for (Map.Entry<HttpString, List<String>> header : request.headerMap.entrySet()) {
                    exchange.getRequestHeaders().putAll(header.getKey(), header.getValue());
                }
            }
        }
    }
}

Example 2 with ImmediatePooledByteBuffer

use of io.undertow.util.ImmediatePooledByteBuffer in project undertow by undertow-io.

the class ChunkedStreamSinkConduit method createLastChunk.

private void createLastChunk(final boolean writeFinal) throws UnsupportedEncodingException {
    PooledByteBuffer lastChunkBufferPooled = bufferPool.allocate();
    ByteBuffer lastChunkBuffer = lastChunkBufferPooled.getBuffer();
    if (writeFinal) {
        lastChunkBuffer.put(CRLF);
    } else if (chunkingSepBuffer.hasRemaining()) {
        //the end of chunk /r/n has not been written yet
        //just add it to this buffer to make managing state easier
        lastChunkBuffer.put(chunkingSepBuffer);
    }
    lastChunkBuffer.put(LAST_CHUNK);
    //we just assume it will fit
    HeaderMap trailers = attachable.getAttachment(HttpAttachments.RESPONSE_TRAILERS);
    if (trailers != null && trailers.size() != 0) {
        for (HeaderValues trailer : trailers) {
            for (String val : trailer) {
                trailer.getHeaderName().appendTo(lastChunkBuffer);
                lastChunkBuffer.put((byte) ':');
                lastChunkBuffer.put((byte) ' ');
                lastChunkBuffer.put(val.getBytes(StandardCharsets.US_ASCII));
                lastChunkBuffer.put(CRLF);
            }
        }
        lastChunkBuffer.put(CRLF);
    } else {
        lastChunkBuffer.put(CRLF);
    }
    //horrible hack
    //there is a situation where we can get a buffer leak here if the connection is terminated abnormaly
    //this should be fixed once this channel has its lifecycle tied to the connection, same as fixed length
    lastChunkBuffer.flip();
    ByteBuffer data = ByteBuffer.allocate(lastChunkBuffer.remaining());
    data.put(lastChunkBuffer);
    data.flip();
    this.lastChunkBuffer = new ImmediatePooledByteBuffer(data);
    lastChunkBufferPooled.close();
}

Example 3 with ImmediatePooledByteBuffer

use of io.undertow.util.ImmediatePooledByteBuffer in project undertow by undertow-io.

the class Http2DataStreamSinkChannel method createFrameHeaderImpl.

@Override
protected SendFrameHeader createFrameHeaderImpl() {
    //TODO: this is a mess WRT re-using between headers and push_promise, sort out a more reasonable abstraction
    int dataPaddingBytes = getChannel().getPaddingBytes();
    int attempted = getBuffer().remaining() + dataPaddingBytes + (dataPaddingBytes > 0 ? 1 : 0);
    final int fcWindow = grabFlowControlBytes(attempted);
    if (fcWindow == 0 && getBuffer().hasRemaining()) {
        //flow control window is exhausted
        return new SendFrameHeader(getBuffer().remaining(), null);
    }
    if (fcWindow <= dataPaddingBytes + 1) {
        //so we won't actually be able to send any data, just padding, which is obviously not what we want
        if (getBuffer().remaining() >= fcWindow) {
            //easy fix, we just don't send any data
            dataPaddingBytes = 0;
        } else if (getBuffer().remaining() == dataPaddingBytes) {
            //corner case.
            dataPaddingBytes = 1;
        } else {
            dataPaddingBytes = fcWindow - getBuffer().remaining() - 1;
        }
    }
    final boolean finalFrame = isWritesShutdown() && fcWindow >= getBuffer().remaining();
    PooledByteBuffer firstHeaderBuffer = getChannel().getBufferPool().allocate();
    PooledByteBuffer[] allHeaderBuffers = null;
    ByteBuffer firstBuffer = firstHeaderBuffer.getBuffer();
    boolean firstFrame = false;
    if (first) {
        firstFrame = true;
        first = false;
        //back fill the length
        firstBuffer.put((byte) 0);
        firstBuffer.put((byte) 0);
        firstBuffer.put((byte) 0);
        //type
        firstBuffer.put((byte) frameType);
        //back fill the flags
        firstBuffer.put((byte) 0);
        Http2ProtocolUtils.putInt(firstBuffer, getStreamId());
        int paddingBytes = getChannel().getPaddingBytes();
        if (paddingBytes > 0) {
            firstBuffer.put((byte) (paddingBytes & 0xFF));
        }
        writeBeforeHeaderBlock(firstBuffer);
        HpackEncoder.State result = encoder.encode(headers, firstBuffer);
        PooledByteBuffer current = firstHeaderBuffer;
        int headerFrameLength = firstBuffer.position() - 9 + paddingBytes;
        firstBuffer.put(0, (byte) ((headerFrameLength >> 16) & 0xFF));
        firstBuffer.put(1, (byte) ((headerFrameLength >> 8) & 0xFF));
        firstBuffer.put(2, (byte) (headerFrameLength & 0xFF));
        //flags
        firstBuffer.put(4, (byte) ((isWritesShutdown() && !getBuffer().hasRemaining() && frameType == Http2Channel.FRAME_TYPE_HEADERS ? Http2Channel.HEADERS_FLAG_END_STREAM : 0) | (result == HpackEncoder.State.COMPLETE ? Http2Channel.HEADERS_FLAG_END_HEADERS : 0) | (paddingBytes > 0 ? Http2Channel.HEADERS_FLAG_PADDED : 0)));
        ByteBuffer currentBuffer = firstBuffer;
        if (currentBuffer.remaining() < paddingBytes) {
            allHeaderBuffers = allocateAll(allHeaderBuffers, current);
            current = allHeaderBuffers[allHeaderBuffers.length - 1];
            currentBuffer = current.getBuffer();
        }
        for (int i = 0; i < paddingBytes; ++i) {
            currentBuffer.put((byte) 0);
        }
        while (result != HpackEncoder.State.COMPLETE) {
            //todo: add some kind of limit here
            allHeaderBuffers = allocateAll(allHeaderBuffers, current);
            current = allHeaderBuffers[allHeaderBuffers.length - 1];
            //continuation frame
            //note that if the buffers are small we may not actually need a continuation here
            //but it greatly reduces the code complexity
            //back fill the length
            currentBuffer = current.getBuffer();
            currentBuffer.put((byte) 0);
            currentBuffer.put((byte) 0);
            currentBuffer.put((byte) 0);
            //type
            currentBuffer.put((byte) Http2Channel.FRAME_TYPE_CONTINUATION);
            //back fill the flags
            currentBuffer.put((byte) 0);
            Http2ProtocolUtils.putInt(currentBuffer, getStreamId());
            result = encoder.encode(headers, currentBuffer);
            int contFrameLength = currentBuffer.position() - 9;
            currentBuffer.put(0, (byte) ((contFrameLength >> 16) & 0xFF));
            currentBuffer.put(1, (byte) ((contFrameLength >> 8) & 0xFF));
            currentBuffer.put(2, (byte) (contFrameLength & 0xFF));
            //flags
            currentBuffer.put(4, (byte) (result == HpackEncoder.State.COMPLETE ? Http2Channel.HEADERS_FLAG_END_HEADERS : 0));
        }
    }
    PooledByteBuffer currentPooled = allHeaderBuffers == null ? firstHeaderBuffer : allHeaderBuffers[allHeaderBuffers.length - 1];
    ByteBuffer currentBuffer = currentPooled.getBuffer();
    ByteBuffer trailer = null;
    int remainingInBuffer = 0;
    if (getBuffer().remaining() > 0) {
        if (fcWindow > 0) {
            //make sure we have room in the header buffer
            if (currentBuffer.remaining() < 10) {
                allHeaderBuffers = allocateAll(allHeaderBuffers, currentPooled);
                currentPooled = allHeaderBuffers == null ? firstHeaderBuffer : allHeaderBuffers[allHeaderBuffers.length - 1];
                currentBuffer = currentPooled.getBuffer();
            }
            int toSend = fcWindow - dataPaddingBytes - (dataPaddingBytes > 0 ? 1 : 0);
            remainingInBuffer = getBuffer().remaining() - toSend;
            getBuffer().limit(getBuffer().position() + toSend);
            currentBuffer.put((byte) ((fcWindow >> 16) & 0xFF));
            currentBuffer.put((byte) ((fcWindow >> 8) & 0xFF));
            currentBuffer.put((byte) (fcWindow & 0xFF));
            //type
            currentBuffer.put((byte) Http2Channel.FRAME_TYPE_DATA);
            //flags
            currentBuffer.put((byte) ((finalFrame ? Http2Channel.DATA_FLAG_END_STREAM : 0) | (dataPaddingBytes > 0 ? Http2Channel.DATA_FLAG_PADDED : 0)));
            Http2ProtocolUtils.putInt(currentBuffer, getStreamId());
            if (dataPaddingBytes > 0) {
                currentBuffer.put((byte) (dataPaddingBytes & 0xFF));
                trailer = ByteBuffer.allocate(dataPaddingBytes);
            }
        } else {
            remainingInBuffer = getBuffer().remaining();
        }
    } else if (finalFrame && !firstFrame) {
        currentBuffer.put((byte) ((fcWindow >> 16) & 0xFF));
        currentBuffer.put((byte) ((fcWindow >> 8) & 0xFF));
        currentBuffer.put((byte) (fcWindow & 0xFF));
        //type
        currentBuffer.put((byte) Http2Channel.FRAME_TYPE_DATA);
        //flags
        currentBuffer.put((byte) ((Http2Channel.HEADERS_FLAG_END_STREAM & 0xFF) | (dataPaddingBytes > 0 ? Http2Channel.DATA_FLAG_PADDED : 0)));
        Http2ProtocolUtils.putInt(currentBuffer, getStreamId());
        if (dataPaddingBytes > 0) {
            currentBuffer.put((byte) (dataPaddingBytes & 0xFF));
            trailer = ByteBuffer.allocate(dataPaddingBytes);
        }
    }
    if (allHeaderBuffers == null) {
        //only one buffer required
        currentBuffer.flip();
        return new SendFrameHeader(remainingInBuffer, currentPooled, false, trailer);
    } else {
        //headers were too big to fit in one buffer
        //for now we will just copy them into a big buffer
        int length = 0;
        for (int i = 0; i < allHeaderBuffers.length; ++i) {
            length += allHeaderBuffers[i].getBuffer().position();
            allHeaderBuffers[i].getBuffer().flip();
        }
        try {
            ByteBuffer newBuf = ByteBuffer.allocate(length);
            for (int i = 0; i < allHeaderBuffers.length; ++i) {
                newBuf.put(allHeaderBuffers[i].getBuffer());
            }
            newBuf.flip();
            return new SendFrameHeader(remainingInBuffer, new ImmediatePooledByteBuffer(newBuf), false, trailer);
        } finally {
            //the allocate can oome
            for (int i = 0; i < allHeaderBuffers.length; ++i) {
                allHeaderBuffers[i].close();
            }
        }
    }
}

Example 4 with ImmediatePooledByteBuffer

use of io.undertow.util.ImmediatePooledByteBuffer in project undertow by undertow-io.

the class AjpClientRequestClientStreamSinkChannel method createFrameHeaderImpl.

private SendFrameHeader createFrameHeaderImpl() {
    if (discardMode) {
        getBuffer().clear();
        getBuffer().flip();
        return new SendFrameHeader(new ImmediatePooledByteBuffer(ByteBuffer.wrap(new byte[0])));
    }
    PooledByteBuffer pooledHeaderBuffer = getChannel().getBufferPool().allocate();
    try {
        final ByteBuffer buffer = pooledHeaderBuffer.getBuffer();
        ByteBuffer dataBuffer = getBuffer();
        int dataInBuffer = dataBuffer.remaining();
        if (!firstFrameWritten && requestedChunkSize == 0) {
            //we are waiting on a read body chunk
            return new SendFrameHeader(dataInBuffer, null);
        }
        int maxData = getChannel().getSettings().get(UndertowOptions.MAX_AJP_PACKET_SIZE, DEFAULT_MAX_DATA_SIZE) - 6;
        if (!firstFrameWritten) {
            String contentLength = headers.getFirst(Headers.CONTENT_LENGTH);
            if (contentLength != null) {
                dataSize = Long.parseLong(contentLength);
                requestedChunkSize = maxData;
                if (dataInBuffer > dataSize) {
                    throw UndertowMessages.MESSAGES.fixedLengthOverflow();
                }
            } else if (isWritesShutdown() && !headers.contains(Headers.TRANSFER_ENCODING)) {
                //writes are shut down, go to fixed length
                headers.put(Headers.CONTENT_LENGTH, dataInBuffer);
                dataSize = dataInBuffer;
                requestedChunkSize = maxData;
            } else {
                headers.put(Headers.TRANSFER_ENCODING, Headers.CHUNKED.toString());
                dataSize = -1;
                requestedChunkSize = 0;
            }
            firstFrameWritten = true;
            final String path;
            final String queryString;
            int qsIndex = this.path.indexOf('?');
            if (qsIndex == -1) {
                path = this.path;
                queryString = null;
            } else {
                path = this.path.substring(0, qsIndex);
                queryString = this.path.substring(qsIndex + 1);
            }
            buffer.put((byte) 0x12);
            buffer.put((byte) 0x34);
            //we fill the size in later
            buffer.put((byte) 0);
            buffer.put((byte) 0);
            buffer.put((byte) 2);
            boolean storeMethod = false;
            Integer methodNp = AjpConstants.HTTP_METHODS_MAP.get(method);
            if (methodNp == null) {
                methodNp = 0xFF;
                storeMethod = true;
            }
            buffer.put((byte) (int) methodNp);
            AjpUtils.putHttpString(buffer, protocol);
            putString(buffer, path);
            putString(buffer, notNull(attachable.getAttachment(ProxiedRequestAttachments.REMOTE_ADDRESS)));
            putString(buffer, notNull(attachable.getAttachment(ProxiedRequestAttachments.REMOTE_HOST)));
            putString(buffer, notNull(attachable.getAttachment(ProxiedRequestAttachments.SERVER_NAME)));
            AjpUtils.putInt(buffer, notNull(attachable.getAttachment(ProxiedRequestAttachments.SERVER_PORT)));
            buffer.put((byte) (notNull(attachable.getAttachment(ProxiedRequestAttachments.IS_SSL)) ? 1 : 0));
            int headers = 0;
            //we need to count the headers
            final HeaderMap responseHeaders = this.headers;
            for (HttpString name : responseHeaders.getHeaderNames()) {
                headers += responseHeaders.get(name).size();
            }
            AjpUtils.putInt(buffer, headers);
            for (final HttpString header : responseHeaders.getHeaderNames()) {
                for (String headerValue : responseHeaders.get(header)) {
                    Integer headerCode = AjpConstants.HEADER_MAP.get(header);
                    if (headerCode != null) {
                        AjpUtils.putInt(buffer, headerCode);
                    } else {
                        AjpUtils.putHttpString(buffer, header);
                    }
                    putString(buffer, headerValue);
                }
            }
            if (queryString != null) {
                //query_string
                buffer.put((byte) ATTR_QUERY_STRING);
                putString(buffer, queryString);
            }
            String remoteUser = attachable.getAttachment(ProxiedRequestAttachments.REMOTE_USER);
            if (remoteUser != null) {
                buffer.put((byte) ATTR_REMOTE_USER);
                putString(buffer, remoteUser);
            }
            String authType = attachable.getAttachment(ProxiedRequestAttachments.AUTH_TYPE);
            if (authType != null) {
                buffer.put((byte) ATTR_AUTH_TYPE);
                putString(buffer, authType);
            }
            String route = attachable.getAttachment(ProxiedRequestAttachments.ROUTE);
            if (route != null) {
                buffer.put((byte) ATTR_ROUTE);
                putString(buffer, route);
            }
            String sslCert = attachable.getAttachment(ProxiedRequestAttachments.SSL_CERT);
            if (sslCert != null) {
                buffer.put((byte) ATTR_SSL_CERT);
                putString(buffer, sslCert);
            }
            String sslCypher = attachable.getAttachment(ProxiedRequestAttachments.SSL_CYPHER);
            if (sslCypher != null) {
                buffer.put((byte) ATTR_SSL_CIPHER);
                putString(buffer, sslCypher);
            }
            byte[] sslSession = attachable.getAttachment(ProxiedRequestAttachments.SSL_SESSION_ID);
            if (sslSession != null) {
                buffer.put((byte) ATTR_SSL_SESSION);
                putString(buffer, FlexBase64.encodeString(sslSession, false));
            }
            Integer sslKeySize = attachable.getAttachment(ProxiedRequestAttachments.SSL_KEY_SIZE);
            if (sslKeySize != null) {
                buffer.put((byte) ATTR_SSL_KEY_SIZE);
                putString(buffer, sslKeySize.toString());
            }
            String secret = attachable.getAttachment(ProxiedRequestAttachments.SECRET);
            if (secret != null) {
                buffer.put((byte) ATTR_SECRET);
                putString(buffer, secret);
            }
            if (storeMethod) {
                buffer.put((byte) ATTR_STORED_METHOD);
                putString(buffer, method.toString());
            }
            buffer.put((byte) 0xFF);
            int dataLength = buffer.position() - 4;
            buffer.put(2, (byte) ((dataLength >> 8) & 0xFF));
            buffer.put(3, (byte) (dataLength & 0xFF));
        }
        if (dataSize == 0) {
            //no data, just write out this frame and we are done
            buffer.flip();
            return new SendFrameHeader(pooledHeaderBuffer);
        } else if (requestedChunkSize > 0) {
            if (isWritesShutdown() && dataInBuffer == 0) {
                buffer.put((byte) 0x12);
                buffer.put((byte) 0x34);
                buffer.put((byte) 0x00);
                buffer.put((byte) 0x02);
                buffer.put((byte) 0x00);
                buffer.put((byte) 0x00);
                buffer.flip();
                return new SendFrameHeader(pooledHeaderBuffer);
            }
            int remaining = dataInBuffer;
            remaining = Math.min(remaining, maxData);
            remaining = Math.min(remaining, requestedChunkSize);
            int bodySize = remaining + 2;
            buffer.put((byte) 0x12);
            buffer.put((byte) 0x34);
            buffer.put((byte) ((bodySize >> 8) & 0xFF));
            buffer.put((byte) (bodySize & 0xFF));
            buffer.put((byte) ((remaining >> 8) & 0xFF));
            buffer.put((byte) (remaining & 0xFF));
            requestedChunkSize = 0;
            if (remaining < dataInBuffer) {
                dataBuffer.limit(getBuffer().position() + remaining);
                buffer.flip();
                return new SendFrameHeader(dataInBuffer - remaining, pooledHeaderBuffer, dataSize < 0);
            } else {
                buffer.flip();
                return new SendFrameHeader(0, pooledHeaderBuffer, dataSize < 0);
            }
        } else {
            //chunked. We just write the headers, and leave all the data in the buffer
            //they need to send us a read body chunk in order to get any data
            buffer.flip();
            if (buffer.remaining() == 0) {
                pooledHeaderBuffer.close();
                return new SendFrameHeader(dataInBuffer, null, true);
            }
            dataBuffer.limit(dataBuffer.position());
            return new SendFrameHeader(dataInBuffer, pooledHeaderBuffer, true);
        }
    } catch (BufferOverflowException e) {
        //TODO: UNDERTOW-901
        pooledHeaderBuffer.close();
        markBroken();
        throw e;
    }
}

Example 5 with ImmediatePooledByteBuffer

use of io.undertow.util.ImmediatePooledByteBuffer in project undertow by undertow-io.

the class Http2GoAwayStreamSinkChannel method createFrameHeader.

@Override
protected SendFrameHeader createFrameHeader() {
    ByteBuffer buf = ByteBuffer.allocate(17);
    Http2ProtocolUtils.putInt(buf, HEADER_FIRST_LINE);
    buf.put((byte) 0);
    //stream id
    Http2ProtocolUtils.putInt(buf, 0);
    Http2ProtocolUtils.putInt(buf, lastGoodStreamId);
    Http2ProtocolUtils.putInt(buf, status);
    buf.flip();
    return new SendFrameHeader(new ImmediatePooledByteBuffer(buf));
}