Examples of org.apache.tomcat.util.http.MimeHeaders$NamesEnumerator

org.apache.tomcat.util.http.MimeHeaders
Enumerate the distinct header names. Each nextElement() is O(n) ( a comparation is done with all previous elements ). This is less frequesnt than add() - we want to keep add O(1).

     * Return an array of all the header names set for this response, or
     * a zero-length array if no headers have been set.
     */
    public String[] getHeaderNames() {


        MimeHeaders headers = coyoteResponse.getMimeHeaders();
        int n = headers.size();
        String[] result = new String[n];
        for (int i = 0; i < n; i++) {
            result[i] = headers.getName(i).toString();
        }
        return result;


    }

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        String name = cookie.getName();
        final String headername = "Set-Cookie";
        final String startsWith = name + "=";
        final StringBuffer sb = generateCookieString(cookie, httpOnly);
        boolean set = false;
        MimeHeaders headers = coyoteResponse.getMimeHeaders();
        int n = headers.size();
        for (int i = 0; i < n; i++) {
            if (headers.getName(i).toString().equals(headername)) {
                if (headers.getValue(i).toString().startsWith(startsWith)) {
                    headers.getValue(i).setString(sb.toString());
                    set = true;
                }
            }
        }
        if (set) {

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            methodMB.setString(Constants.GET);
        } else if (methodMB.equals(Constants.POST)) {
            methodMB.setString(Constants.POST);
        }


        MimeHeaders headers = request.getMimeHeaders();


        // Check connection header
        MessageBytes connectionValueMB = headers.getValue("connection");
        if (connectionValueMB != null) {
            ByteChunk connectionValueBC = connectionValueMB.getByteChunk();
            if (findBytes(connectionValueBC, Constants.CLOSE_BYTES) != -1) {
                keepAlive = false;
            } else if (findBytes(connectionValueBC,
                                 Constants.KEEPALIVE_BYTES) != -1) {
                keepAlive = true;
            }
        }


        MessageBytes expectMB = null;
        if (http11)
            expectMB = headers.getValue("expect");
        if ((expectMB != null)
            && (expectMB.indexOfIgnoreCase("100-continue", 0) != -1)) {
            inputBuffer.setSwallowInput(false);
            expectation = true;
        }


        // Check user-agent header
        if ((restrictedUserAgents != null) && ((http11) || (keepAlive))) {
            MessageBytes userAgentValueMB = headers.getValue("user-agent");
            // Check in the restricted list, and adjust the http11
            // and keepAlive flags accordingly
            if(userAgentValueMB != null) {
                String userAgentValue = userAgentValueMB.toString();
                for (int i = 0; i < restrictedUserAgents.length; i++) {
                    if (restrictedUserAgents[i].matcher(userAgentValue).matches()) {
                        http11 = false;
                        keepAlive = false;
                        break;
                    }
                }
            }
        }


        // Check for a full URI (including protocol://host:port/)
        ByteChunk uriBC = request.requestURI().getByteChunk();
        if (uriBC.startsWithIgnoreCase("http", 0)) {


            int pos = uriBC.indexOf("://", 0, 3, 4);
            int uriBCStart = uriBC.getStart();
            int slashPos = -1;
            if (pos != -1) {
                byte[] uriB = uriBC.getBytes();
                slashPos = uriBC.indexOf('/', pos + 3);
                if (slashPos == -1) {
                    slashPos = uriBC.getLength();
                    // Set URI as "/"
                    request.requestURI().setBytes
                        (uriB, uriBCStart + pos + 1, 1);
                } else {
                    request.requestURI().setBytes
                        (uriB, uriBCStart + slashPos,
                         uriBC.getLength() - slashPos);
                }
                MessageBytes hostMB = headers.setValue("host");
                hostMB.setBytes(uriB, uriBCStart + pos + 3,
                                slashPos - pos - 3);
            }


        }


        // Input filter setup
        InputFilter[] inputFilters = inputBuffer.getFilters();


        // Parse transfer-encoding header
        MessageBytes transferEncodingValueMB = null;
        if (http11)
            transferEncodingValueMB = headers.getValue("transfer-encoding");
        if (transferEncodingValueMB != null) {
            String transferEncodingValue = transferEncodingValueMB.toString();
            // Parse the comma separated list. "identity" codings are ignored
            int startPos = 0;
            int commaPos = transferEncodingValue.indexOf(',');
            String encodingName = null;
            while (commaPos != -1) {
                encodingName = transferEncodingValue.substring
                    (startPos, commaPos).toLowerCase().trim();
                if (!addInputFilter(inputFilters, encodingName)) {
                    // Unsupported transfer encoding
                    error = true;
                    // 501 - Unimplemented
                    response.setStatus(501);
                }
                startPos = commaPos + 1;
                commaPos = transferEncodingValue.indexOf(',', startPos);
            }
            encodingName = transferEncodingValue.substring(startPos)
                .toLowerCase().trim();
            if (!addInputFilter(inputFilters, encodingName)) {
                // Unsupported transfer encoding
                error = true;
                // 501 - Unimplemented
                if (log.isDebugEnabled()) {
                    log.debug(sm.getString("http11processor.request.prepare")+
                              " Unsupported transfer encoding \""+encodingName+"\"");
                }
                response.setStatus(501);
            }
        }


        // Parse content-length header
        long contentLength = request.getContentLengthLong();
        if (contentLength >= 0 && !contentDelimitation) {
            inputBuffer.addActiveFilter
                (inputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        }


        MessageBytes valueMB = headers.getValue("host");


        // Check host header
        if (http11 && (valueMB == null)) {
            error = true;
            // 400 - Bad request

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            methodMB.setString(Constants.GET);
        } else if (methodMB.equals(Constants.POST)) {
            methodMB.setString(Constants.POST);
        }


        MimeHeaders headers = request.getMimeHeaders();


        // Check connection header
        MessageBytes connectionValueMB = headers.getValue("connection");
        if (connectionValueMB != null) {
            ByteChunk connectionValueBC = connectionValueMB.getByteChunk();
            if (findBytes(connectionValueBC, Constants.CLOSE_BYTES) != -1) {
                keepAlive = false;
            } else if (findBytes(connectionValueBC,
                                 Constants.KEEPALIVE_BYTES) != -1) {
                keepAlive = true;
            }
        }


        MessageBytes expectMB = null;
        if (http11)
            expectMB = headers.getValue("expect");
        if ((expectMB != null)
            && (expectMB.indexOfIgnoreCase("100-continue", 0) != -1)) {
            inputBuffer.setSwallowInput(false);
            expectation = true;
        }


        // Check user-agent header
        if ((restrictedUserAgents != null) && ((http11) || (keepAlive))) {
            MessageBytes userAgentValueMB = headers.getValue("user-agent");
            // Check in the restricted list, and adjust the http11
            // and keepAlive flags accordingly
            if(userAgentValueMB != null) {
                String userAgentValue = userAgentValueMB.toString();
                if (restrictedUserAgents != null &&
                        restrictedUserAgents.matcher(userAgentValue).matches()) {
                    http11 = false;
                    keepAlive = false;
                }
            }
        }


        // Check for a full URI (including protocol://host:port/)
        ByteChunk uriBC = request.requestURI().getByteChunk();
        if (uriBC.startsWithIgnoreCase("http", 0)) {


            int pos = uriBC.indexOf("://", 0, 3, 4);
            int uriBCStart = uriBC.getStart();
            int slashPos = -1;
            if (pos != -1) {
                byte[] uriB = uriBC.getBytes();
                slashPos = uriBC.indexOf('/', pos + 3);
                if (slashPos == -1) {
                    slashPos = uriBC.getLength();
                    // Set URI as "/"
                    request.requestURI().setBytes
                        (uriB, uriBCStart + pos + 1, 1);
                } else {
                    request.requestURI().setBytes
                        (uriB, uriBCStart + slashPos,
                         uriBC.getLength() - slashPos);
                }
                MessageBytes hostMB = headers.setValue("host");
                hostMB.setBytes(uriB, uriBCStart + pos + 3,
                                slashPos - pos - 3);
            }


        }


        // Input filter setup
        InputFilter[] inputFilters = inputBuffer.getFilters();


        // Parse transfer-encoding header
        MessageBytes transferEncodingValueMB = null;
        if (http11)
            transferEncodingValueMB = headers.getValue("transfer-encoding");
        if (transferEncodingValueMB != null) {
            String transferEncodingValue = transferEncodingValueMB.toString();
            // Parse the comma separated list. "identity" codings are ignored
            int startPos = 0;
            int commaPos = transferEncodingValue.indexOf(',');
            String encodingName = null;
            while (commaPos != -1) {
                encodingName = transferEncodingValue.substring
                    (startPos, commaPos).toLowerCase(Locale.ENGLISH).trim();
                if (!addInputFilter(inputFilters, encodingName)) {
                    // Unsupported transfer encoding
                    error = true;
                    // 501 - Unimplemented
                    response.setStatus(501);
                    adapter.log(request, response, 0);
                }
                startPos = commaPos + 1;
                commaPos = transferEncodingValue.indexOf(',', startPos);
            }
            encodingName = transferEncodingValue.substring(startPos)
                .toLowerCase(Locale.ENGLISH).trim();
            if (!addInputFilter(inputFilters, encodingName)) {
                // Unsupported transfer encoding
                error = true;
                // 501 - Unimplemented
                response.setStatus(501);
                adapter.log(request, response, 0);
            }
        }


        // Parse content-length header
        long contentLength = request.getContentLengthLong();
        if (contentLength >= 0 && !contentDelimitation) {
            inputBuffer.addActiveFilter
                (inputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        }


        MessageBytes valueMB = headers.getValue("host");


        // Check host header
        if (http11 && (valueMB == null)) {
            error = true;
            // 400 - Bad request

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            methodMB.setString(Constants.GET);
        } else if (methodMB.equals(Constants.POST)) {
            methodMB.setString(Constants.POST);
        }


        MimeHeaders headers = request.getMimeHeaders();


        // Check connection header
        MessageBytes connectionValueMB = headers.getValue("connection");
        if (connectionValueMB != null) {
            ByteChunk connectionValueBC = connectionValueMB.getByteChunk();
            if (findBytes(connectionValueBC, Constants.CLOSE_BYTES) != -1) {
                keepAlive = false;
            } else if (findBytes(connectionValueBC,
                                 Constants.KEEPALIVE_BYTES) != -1) {
                keepAlive = true;
            }
        }


        MessageBytes expectMB = null;
        if (http11)
            expectMB = headers.getValue("expect");
        if ((expectMB != null)
            && (expectMB.indexOfIgnoreCase("100-continue", 0) != -1)) {
            inputBuffer.setSwallowInput(false);
            expectation = true;
        }


        // Check user-agent header
        if ((restrictedUserAgents != null) && ((http11) || (keepAlive))) {
            MessageBytes userAgentValueMB = headers.getValue("user-agent");
            // Check in the restricted list, and adjust the http11
            // and keepAlive flags accordingly
            if(userAgentValueMB != null) {
                String userAgentValue = userAgentValueMB.toString();
                for (int i = 0; i < restrictedUserAgents.length; i++) {
                    if (restrictedUserAgents[i].matcher(userAgentValue).matches()) {
                        http11 = false;
                        keepAlive = false;
                        break;
                    }
                }
            }
        }


        // Check for a full URI (including protocol://host:port/)
        ByteChunk uriBC = request.requestURI().getByteChunk();
        if (uriBC.startsWithIgnoreCase("http", 0)) {


            int pos = uriBC.indexOf("://", 0, 3, 4);
            int uriBCStart = uriBC.getStart();
            int slashPos = -1;
            if (pos != -1) {
                byte[] uriB = uriBC.getBytes();
                slashPos = uriBC.indexOf('/', pos + 3);
                if (slashPos == -1) {
                    slashPos = uriBC.getLength();
                    // Set URI as "/"
                    request.requestURI().setBytes
                        (uriB, uriBCStart + pos + 1, 1);
                } else {
                    request.requestURI().setBytes
                        (uriB, uriBCStart + slashPos,
                         uriBC.getLength() - slashPos);
                }
                MessageBytes hostMB = headers.setValue("host");
                hostMB.setBytes(uriB, uriBCStart + pos + 3,
                                slashPos - pos - 3);
            }


        }


        // Input filter setup
        InputFilter[] inputFilters = inputBuffer.getFilters();


        // Parse transfer-encoding header
        MessageBytes transferEncodingValueMB = null;
        if (http11)
            transferEncodingValueMB = headers.getValue("transfer-encoding");
        if (transferEncodingValueMB != null) {
            String transferEncodingValue = transferEncodingValueMB.toString();
            // Parse the comma separated list. "identity" codings are ignored
            int startPos = 0;
            int commaPos = transferEncodingValue.indexOf(',');
            String encodingName = null;
            while (commaPos != -1) {
                encodingName = transferEncodingValue.substring
                    (startPos, commaPos).toLowerCase().trim();
                if (!addInputFilter(inputFilters, encodingName)) {
                    // Unsupported transfer encoding
                    error = true;
                    // 501 - Unimplemented
                    response.setStatus(501);
                }
                startPos = commaPos + 1;
                commaPos = transferEncodingValue.indexOf(',', startPos);
            }
            encodingName = transferEncodingValue.substring(startPos)
                .toLowerCase().trim();
            if (!addInputFilter(inputFilters, encodingName)) {
                // Unsupported transfer encoding
                error = true;
                // 501 - Unimplemented
                if (log.isDebugEnabled()) {
                    log.debug(sm.getString("http11processor.request.prepare")+
                              " Unsupported transfer encoding \""+encodingName+"\"");
                }
                response.setStatus(501);
            }
        }


        // Parse content-length header
        long contentLength = request.getContentLengthLong();
        if (contentLength >= 0 && !contentDelimitation) {
            inputBuffer.addActiveFilter
                (inputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        }


        MessageBytes valueMB = headers.getValue("host");


        // Check host header
        if (http11 && (valueMB == null)) {
            error = true;
            // 400 - Bad request

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            if (useCompression) {
                response.setContentLength(-1);
            }
        }


        MimeHeaders headers = response.getMimeHeaders();
        if (!entityBody) {
            response.setContentLength(-1);
        } else {
            String contentType = response.getContentType();
            if (contentType != null) {
                headers.setValue("Content-Type").setString(contentType);
            }
            String contentLanguage = response.getContentLanguage();
            if (contentLanguage != null) {
                headers.setValue("Content-Language")
                    .setString(contentLanguage);
            }
        }


        long contentLength = response.getContentLengthLong();
        if (contentLength != -1) {
            headers.setValue("Content-Length").setLong(contentLength);
            outputBuffer.addActiveFilter
                (outputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        } else {
            if (entityBody && http11 && keepAlive) {
                outputBuffer.addActiveFilter
                    (outputFilters[Constants.CHUNKED_FILTER]);
                contentDelimitation = true;
                headers.addValue(Constants.TRANSFERENCODING).setString(Constants.CHUNKED);
            } else {
                outputBuffer.addActiveFilter
                    (outputFilters[Constants.IDENTITY_FILTER]);
            }
        }


        if (useCompression) {
            outputBuffer.addActiveFilter(outputFilters[Constants.GZIP_FILTER]);
            headers.setValue("Content-Encoding").setString("gzip");
            // Make Proxies happy via Vary (from mod_deflate)
            headers.setValue("Vary").setString("Accept-Encoding");
        }


        // Add date header
        String date = null;
        if (org.apache.coyote.Constants.IS_SECURITY_ENABLED){
            date = (String)AccessController.doPrivileged(
                    new PrivilegedAction() {
                        public Object run(){
                            return FastHttpDateFormat.getCurrentDate();
                        }
                    }
            );
        } else {
            date = FastHttpDateFormat.getCurrentDate();
        }
        headers.setValue("Date").setString(date);


        // FIXME: Add transfer encoding header


        if ((entityBody) && (!contentDelimitation)) {
            // Mark as close the connection after the request, and add the
            // connection: close header
            keepAlive = false;
        }


        // If we know that the request is bad this early, add the
        // Connection: close header.
        keepAlive = keepAlive && !statusDropsConnection(statusCode);
        if (!keepAlive) {
            headers.addValue(Constants.CONNECTION).setString(Constants.CLOSE);
        } else if (!http11 && !error) {
            headers.addValue(Constants.CONNECTION).setString(Constants.KEEPALIVE);
        }


        // Build the response header
        outputBuffer.sendStatus();


        // Add server header
        if (server != null) {
            headers.setValue("Server").setString(server);
        } else {
            outputBuffer.write(Constants.SERVER_BYTES);
        }


        int size = headers.size();
        for (int i = 0; i < size; i++) {
            outputBuffer.sendHeader(headers.getName(i), headers.getValue(i));
        }
        outputBuffer.endHeaders();


    }

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        Iterator cookies = saved.getCookies();
        while (cookies.hasNext()) {
            request.addCookie((Cookie) cookies.next());
        }


        MimeHeaders rmh = request.getCoyoteRequest().getMimeHeaders();
        rmh.recycle();
        boolean cachable = "GET".equalsIgnoreCase(saved.getMethod()) ||
                           "HEAD".equalsIgnoreCase(saved.getMethod());
        Iterator names = saved.getHeaderNames();
        while (names.hasNext()) {
            String name = (String) names.next();
            // The browser isn't expecting this conditional response now.
            // Assuming that it can quietly recover from an unexpected 412.
            // BZ 43687
            if(!("If-Modified-Since".equalsIgnoreCase(name) ||
                 (cachable && "If-None-Match".equalsIgnoreCase(name)))) {
                Iterator values = saved.getHeaderValues(name);
                while (values.hasNext()) {
                    rmh.addValue(name).setString( (String)values.next() );
                }
            }
        }
        
        request.clearLocales();

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            methodMB.setString(Constants.GET);
        } else if (methodMB.equals(Constants.POST)) {
            methodMB.setString(Constants.POST);
        }


        MimeHeaders headers = request.getMimeHeaders();


        // Check connection header
        MessageBytes connectionValueMB = headers.getValue("connection");
        if (connectionValueMB != null) {
            ByteChunk connectionValueBC = connectionValueMB.getByteChunk();
            if (findBytes(connectionValueBC, Constants.CLOSE_BYTES) != -1) {
                keepAlive = false;
            } else if (findBytes(connectionValueBC,
                                 Constants.KEEPALIVE_BYTES) != -1) {
                keepAlive = true;
            }
        }


        MessageBytes expectMB = null;
        if (http11)
            expectMB = headers.getValue("expect");
        if ((expectMB != null)
            && (expectMB.indexOfIgnoreCase("100-continue", 0) != -1)) {
            inputBuffer.setSwallowInput(false);
            expectation = true;
        }


        // Check user-agent header
        if ((restrictedUserAgents != null) && ((http11) || (keepAlive))) {
            MessageBytes userAgentValueMB = headers.getValue("user-agent");
            // Check in the restricted list, and adjust the http11
            // and keepAlive flags accordingly
            if(userAgentValueMB != null) {
                String userAgentValue = userAgentValueMB.toString();
                for (int i = 0; i < restrictedUserAgents.length; i++) {
                    if (restrictedUserAgents[i].matcher(userAgentValue).matches()) {
                        http11 = false;
                        keepAlive = false;
                        break;
                    }
                }
            }
        }


        // Check for a full URI (including protocol://host:port/)
        ByteChunk uriBC = request.requestURI().getByteChunk();
        if (uriBC.startsWithIgnoreCase("http", 0)) {


            int pos = uriBC.indexOf("://", 0, 3, 4);
            int uriBCStart = uriBC.getStart();
            int slashPos = -1;
            if (pos != -1) {
                byte[] uriB = uriBC.getBytes();
                slashPos = uriBC.indexOf('/', pos + 3);
                if (slashPos == -1) {
                    slashPos = uriBC.getLength();
                    // Set URI as "/"
                    request.requestURI().setBytes
                        (uriB, uriBCStart + pos + 1, 1);
                } else {
                    request.requestURI().setBytes
                        (uriB, uriBCStart + slashPos,
                         uriBC.getLength() - slashPos);
                }
                MessageBytes hostMB = headers.setValue("host");
                hostMB.setBytes(uriB, uriBCStart + pos + 3,
                                slashPos - pos - 3);
            }


        }


        // Input filter setup
        InputFilter[] inputFilters = inputBuffer.getFilters();


        // Parse transfer-encoding header
        MessageBytes transferEncodingValueMB = null;
        if (http11)
            transferEncodingValueMB = headers.getValue("transfer-encoding");
        if (transferEncodingValueMB != null) {
            String transferEncodingValue = transferEncodingValueMB.toString();
            // Parse the comma separated list. "identity" codings are ignored
            int startPos = 0;
            int commaPos = transferEncodingValue.indexOf(',');
            String encodingName = null;
            while (commaPos != -1) {
                encodingName = transferEncodingValue.substring
                    (startPos, commaPos).toLowerCase().trim();
                if (!addInputFilter(inputFilters, encodingName)) {
                    // Unsupported transfer encoding
                    error = true;
                    // 501 - Unimplemented
                    response.setStatus(501);
                }
                startPos = commaPos + 1;
                commaPos = transferEncodingValue.indexOf(',', startPos);
            }
            encodingName = transferEncodingValue.substring(startPos)
                .toLowerCase().trim();
            if (!addInputFilter(inputFilters, encodingName)) {
                // Unsupported transfer encoding
                error = true;
                // 501 - Unimplemented
                response.setStatus(501);
            }
        }


        // Parse content-length header
        long contentLength = request.getContentLengthLong();
        if (contentLength >= 0 && !contentDelimitation) {
            inputBuffer.addActiveFilter
                (inputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        }


        MessageBytes valueMB = headers.getValue("host");


        // Check host header
        if (http11 && (valueMB == null)) {
            error = true;
            // 400 - Bad request

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            if (useCompression) {
                response.setContentLength(-1);
            }
        }


        MimeHeaders headers = response.getMimeHeaders();
        if (!entityBody) {
            response.setContentLength(-1);
        } else {
            String contentType = response.getContentType();
            if (contentType != null) {
                headers.setValue("Content-Type").setString(contentType);
            }
            String contentLanguage = response.getContentLanguage();
            if (contentLanguage != null) {
                headers.setValue("Content-Language")
                    .setString(contentLanguage);
            }
        }


        long contentLength = response.getContentLengthLong();
        if (contentLength != -1) {
            headers.setValue("Content-Length").setLong(contentLength);
            outputBuffer.addActiveFilter
                (outputFilters[Constants.IDENTITY_FILTER]);
            contentDelimitation = true;
        } else {
            if (entityBody && http11 && keepAlive) {
                outputBuffer.addActiveFilter
                    (outputFilters[Constants.CHUNKED_FILTER]);
                contentDelimitation = true;
                headers.addValue(Constants.TRANSFERENCODING).setString(Constants.CHUNKED);
            } else {
                outputBuffer.addActiveFilter
                    (outputFilters[Constants.IDENTITY_FILTER]);
            }
        }


        if (useCompression) {
            outputBuffer.addActiveFilter(outputFilters[Constants.GZIP_FILTER]);
            headers.setValue("Content-Encoding").setString("gzip");
            // Make Proxies happy via Vary (from mod_deflate)
            headers.setValue("Vary").setString("Accept-Encoding");
        }


        // Add date header
        headers.setValue("Date").setString(FastHttpDateFormat.getCurrentDate());


        // FIXME: Add transfer encoding header


        if ((entityBody) && (!contentDelimitation)) {
            // Mark as close the connection after the request, and add the
            // connection: close header
            keepAlive = false;
        }


        // If we know that the request is bad this early, add the
        // Connection: close header.
        keepAlive = keepAlive && !statusDropsConnection(statusCode);
        if (!keepAlive) {
            headers.addValue(Constants.CONNECTION).setString(Constants.CLOSE);
        } else if (!http11 && !error) {
            headers.addValue(Constants.CONNECTION).setString(Constants.KEEPALIVE);
        }


        // Build the response header
        outputBuffer.sendStatus();


        // Add server header
        if (server != null) {
            headers.setValue("Server").setString(server);
        } else {
            outputBuffer.write(Constants.SERVER_BYTES);
        }


        int size = headers.size();
        for (int i = 0; i < size; i++) {
            outputBuffer.sendHeader(headers.getName(i), headers.getValue(i));
        }
        outputBuffer.endHeaders();


    }

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        Iterator cookies = saved.getCookies();
        while (cookies.hasNext()) {
            request.addCookie((Cookie) cookies.next());
        }


        MimeHeaders rmh = request.getCoyoteRequest().getMimeHeaders();
        rmh.recycle();
        boolean cachable = "GET".equalsIgnoreCase(saved.getMethod()) ||
                           "HEAD".equalsIgnoreCase(saved.getMethod());
        Iterator names = saved.getHeaderNames();
        while (names.hasNext()) {
            String name = (String) names.next();
            // The browser isn't expecting this conditional response now.
            // Assuming that it can quietly recover from an unexpected 412.
            // BZ 43687
            if(!("If-Modified-Since".equalsIgnoreCase(name) ||
                 (cachable && "If-None-Match".equalsIgnoreCase(name)))) {
                Iterator values = saved.getHeaderValues(name);
                while (values.hasNext()) {
                    rmh.addValue(name).setString( (String)values.next() );
                }
            }
        }
        
        request.clearLocales();

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