Examples with InternalHttpUpgradeHandler org.apache.coyote.http11.upgrade.InternalHttpUpgradeHandler used on opensource projects

Example 1 with InternalHttpUpgradeHandler

use of org.apache.coyote.http11.upgrade.InternalHttpUpgradeHandler in project tomcat by apache.

the class Http11Processor method service.

@Override
public SocketState service(SocketWrapperBase<?> socketWrapper) throws IOException {
    RequestInfo rp = request.getRequestProcessor();
    rp.setStage(org.apache.coyote.Constants.STAGE_PARSE);
    // Setting up the I/O
    setSocketWrapper(socketWrapper);
    inputBuffer.init(socketWrapper);
    outputBuffer.init(socketWrapper);
    // Flags
    keepAlive = true;
    openSocket = false;
    readComplete = true;
    boolean keptAlive = false;
    while (!getErrorState().isError() && keepAlive && !isAsync() && upgradeToken == null && !protocol.isPaused()) {
        // Parsing the request header
        try {
            if (!inputBuffer.parseRequestLine(keptAlive, protocol.getConnectionTimeout(), protocol.getKeepAliveTimeout())) {
                if (inputBuffer.getParsingRequestLinePhase() == -1) {
                    return SocketState.UPGRADING;
                } else if (handleIncompleteRequestLineRead()) {
                    break;
                }
            }
            if (protocol.isPaused()) {
                // 503 - Service unavailable
                response.setStatus(503);
                setErrorState(ErrorState.CLOSE_CLEAN, null);
            } else {
                keptAlive = true;
                // Set this every time in case limit has been changed via JMX
                request.getMimeHeaders().setLimit(protocol.getMaxHeaderCount());
                if (!inputBuffer.parseHeaders()) {
                    // We've read part of the request, don't recycle it
                    // instead associate it with the socket
                    openSocket = true;
                    readComplete = false;
                    break;
                }
                if (!protocol.getDisableUploadTimeout()) {
                    socketWrapper.setReadTimeout(protocol.getConnectionUploadTimeout());
                }
            }
        } catch (IOException e) {
            if (log.isDebugEnabled()) {
                log.debug(sm.getString("http11processor.header.parse"), e);
            }
            setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
            break;
        } catch (Throwable t) {
            ExceptionUtils.handleThrowable(t);
            UserDataHelper.Mode logMode = userDataHelper.getNextMode();
            if (logMode != null) {
                String message = sm.getString("http11processor.header.parse");
                switch(logMode) {
                    case INFO_THEN_DEBUG:
                        message += sm.getString("http11processor.fallToDebug");
                    //$FALL-THROUGH$
                    case INFO:
                        log.info(message, t);
                        break;
                    case DEBUG:
                        log.debug(message, t);
                }
            }
            // 400 - Bad Request
            response.setStatus(400);
            setErrorState(ErrorState.CLOSE_CLEAN, t);
            getAdapter().log(request, response, 0);
        }
        // Has an upgrade been requested?
        Enumeration<String> connectionValues = request.getMimeHeaders().values("Connection");
        boolean foundUpgrade = false;
        while (connectionValues.hasMoreElements() && !foundUpgrade) {
            foundUpgrade = connectionValues.nextElement().toLowerCase(Locale.ENGLISH).contains("upgrade");
        }
        if (foundUpgrade) {
            // Check the protocol
            String requestedProtocol = request.getHeader("Upgrade");
            UpgradeProtocol upgradeProtocol = protocol.getUpgradeProtocol(requestedProtocol);
            if (upgradeProtocol != null) {
                if (upgradeProtocol.accept(request)) {
                    // TODO Figure out how to handle request bodies at this
                    // point.
                    response.setStatus(HttpServletResponse.SC_SWITCHING_PROTOCOLS);
                    response.setHeader("Connection", "Upgrade");
                    response.setHeader("Upgrade", requestedProtocol);
                    action(ActionCode.CLOSE, null);
                    getAdapter().log(request, response, 0);
                    InternalHttpUpgradeHandler upgradeHandler = upgradeProtocol.getInternalUpgradeHandler(socketWrapper, getAdapter(), cloneRequest(request));
                    UpgradeToken upgradeToken = new UpgradeToken(upgradeHandler, null, null);
                    action(ActionCode.UPGRADE, upgradeToken);
                    return SocketState.UPGRADING;
                }
            }
        }
        if (!getErrorState().isError()) {
            // Setting up filters, and parse some request headers
            rp.setStage(org.apache.coyote.Constants.STAGE_PREPARE);
            try {
                prepareRequest();
            } catch (Throwable t) {
                ExceptionUtils.handleThrowable(t);
                if (log.isDebugEnabled()) {
                    log.debug(sm.getString("http11processor.request.prepare"), t);
                }
                // 500 - Internal Server Error
                response.setStatus(500);
                setErrorState(ErrorState.CLOSE_CLEAN, t);
                getAdapter().log(request, response, 0);
            }
        }
        int maxKeepAliveRequests = protocol.getMaxKeepAliveRequests();
        if (maxKeepAliveRequests == 1) {
            keepAlive = false;
        } else if (maxKeepAliveRequests > 0 && socketWrapper.decrementKeepAlive() <= 0) {
            keepAlive = false;
        }
        // Process the request in the adapter
        if (!getErrorState().isError()) {
            try {
                rp.setStage(org.apache.coyote.Constants.STAGE_SERVICE);
                getAdapter().service(request, response);
                // committed, so we can't try and set headers.
                if (keepAlive && !getErrorState().isError() && !isAsync() && statusDropsConnection(response.getStatus())) {
                    setErrorState(ErrorState.CLOSE_CLEAN, null);
                }
            } catch (InterruptedIOException e) {
                setErrorState(ErrorState.CLOSE_CONNECTION_NOW, e);
            } catch (HeadersTooLargeException e) {
                log.error(sm.getString("http11processor.request.process"), e);
                // anyway to be safe
                if (response.isCommitted()) {
                    setErrorState(ErrorState.CLOSE_NOW, e);
                } else {
                    response.reset();
                    response.setStatus(500);
                    setErrorState(ErrorState.CLOSE_CLEAN, e);
                    // TODO: Remove
                    response.setHeader("Connection", "close");
                }
            } catch (Throwable t) {
                ExceptionUtils.handleThrowable(t);
                log.error(sm.getString("http11processor.request.process"), t);
                // 500 - Internal Server Error
                response.setStatus(500);
                setErrorState(ErrorState.CLOSE_CLEAN, t);
                getAdapter().log(request, response, 0);
            }
        }
        // Finish the handling of the request
        rp.setStage(org.apache.coyote.Constants.STAGE_ENDINPUT);
        if (!isAsync()) {
            // If this is an async request then the request ends when it has
            // been completed. The AsyncContext is responsible for calling
            // endRequest() in that case.
            endRequest();
        }
        rp.setStage(org.apache.coyote.Constants.STAGE_ENDOUTPUT);
        // and error, and update the statistics counter
        if (getErrorState().isError()) {
            response.setStatus(500);
        }
        if (!isAsync() || getErrorState().isError()) {
            request.updateCounters();
            if (getErrorState().isIoAllowed()) {
                inputBuffer.nextRequest();
                outputBuffer.nextRequest();
            }
        }
        if (!protocol.getDisableUploadTimeout()) {
            int connectionTimeout = protocol.getConnectionTimeout();
            if (connectionTimeout > 0) {
                socketWrapper.setReadTimeout(connectionTimeout);
            } else {
                socketWrapper.setReadTimeout(0);
            }
        }
        rp.setStage(org.apache.coyote.Constants.STAGE_KEEPALIVE);
        if (breakKeepAliveLoop(socketWrapper)) {
            break;
        }
    }
    rp.setStage(org.apache.coyote.Constants.STAGE_ENDED);
    if (getErrorState().isError() || protocol.isPaused()) {
        return SocketState.CLOSED;
    } else if (isAsync()) {
        return SocketState.LONG;
    } else if (isUpgrade()) {
        return SocketState.UPGRADING;
    } else {
        if (sendfileData != null) {
            return SocketState.SENDFILE;
        } else {
            if (openSocket) {
                if (readComplete) {
                    return SocketState.OPEN;
                } else {
                    return SocketState.LONG;
                }
            } else {
                return SocketState.CLOSED;
            }
        }
    }
}