Use RawHTTP library to process HTTP streams (packmate/Packmate!23)

build.gradle.kts

@@ -46,6 +46,8 @@ dependencies {
     implementation(group = "org.bouncycastle", name = "bcprov-jdk15on", version = "1.70")
     implementation(group = "org.bouncycastle", name = "bctls-jdk15on", version = "1.70")
     implementation(group = "org.modelmapper", name = "modelmapper", version = "3.1.1")
+    implementation("com.athaydes.rawhttp:rawhttp-core:2.5.2")
+
     compileOnly("org.jetbrains:annotations:24.0.1")
     compileOnly("org.projectlombok:lombok")
     runtimeOnly("org.springframework.boot:spring-boot-devtools")

src/main/java/ru/serega6531/packmate/model/CtfService.java

@@ -25,9 +25,7 @@ public class CtfService {
 
     private boolean decryptTls;
 
-    private boolean processChunkedEncoding;
-
-    private boolean ungzipHttp;
+    private boolean http;
 
     private boolean urldecodeHttpRequests;
 

src/main/java/ru/serega6531/packmate/model/Packet.java

@@ -24,7 +24,7 @@ import java.util.Set;
         }
 )
 @AllArgsConstructor
-@Builder
+@Builder(toBuilder = true)
 @Table(indexes = { @Index(name = "stream_id_index", columnList = "stream_id") })
 public class Packet {
 
@@ -49,11 +49,13 @@ public class Packet {
 
     private boolean incoming; // true если от клиента к серверу, иначе false
 
-    private boolean ungzipped;
+    private boolean httpProcessed = false;
 
-    private boolean webSocketParsed;
+    private boolean webSocketParsed = false;
 
-    private boolean tlsDecrypted;
+    private boolean tlsDecrypted = false;
+
+    private boolean hasHttpBody = false;
 
     @Column(nullable = false)
     private byte[] content;

src/main/java/ru/serega6531/packmate/model/pojo/PacketDto.java

@@ -14,6 +14,7 @@ public class PacketDto {
     private boolean ungzipped;
     private boolean webSocketParsed;
     private boolean tlsDecrypted;
+    private boolean hasHttpBody;
     private byte[] content;
 
 }

src/main/java/ru/serega6531/packmate/model/pojo/ServiceCreateDto.java

@@ -8,8 +8,7 @@ public class ServiceCreateDto {
     private int port;
     private String name;
     private boolean decryptTls;
-    private boolean processChunkedEncoding;
-    private boolean ungzipHttp;
+    private boolean http;
     private boolean urldecodeHttpRequests;
     private boolean mergeAdjacentPackets;
     private boolean parseWebSockets;

src/main/java/ru/serega6531/packmate/model/pojo/ServiceDto.java

@@ -8,8 +8,7 @@ public class ServiceDto {
     private int port;
     private String name;
     private boolean decryptTls;
-    private boolean processChunkedEncoding;
-    private boolean ungzipHttp;
+    private boolean http;
     private boolean urldecodeHttpRequests;
     private boolean mergeAdjacentPackets;
     private boolean parseWebSockets;

src/main/java/ru/serega6531/packmate/model/pojo/ServiceUpdateDto.java

@@ -8,8 +8,7 @@ public class ServiceUpdateDto {
     private int port;
     private String name;
     private boolean decryptTls;
-    private boolean processChunkedEncoding;
-    private boolean ungzipHttp;
+    private boolean http;
     private boolean urldecodeHttpRequests;
     private boolean mergeAdjacentPackets;
     private boolean parseWebSockets;

src/main/java/ru/serega6531/packmate/pcap/FilePcapWorker.java

@@ -22,6 +22,8 @@ import java.net.UnknownHostException;
 @Slf4j
 public class FilePcapWorker extends AbstractPcapWorker {
 
+    private final File directory = new File("pcaps");
+
     private final SubscriptionService subscriptionService;
     private final File file;
 
@@ -33,11 +35,8 @@ public class FilePcapWorker extends AbstractPcapWorker {
         super(servicesService, streamService, localIp);
         this.subscriptionService = subscriptionService;
 
-        File directory = new File("pcaps");
         file = new File(directory, filename);
-        if (!file.exists()) {
-            throw new PcapFileNotFoundException(file, directory);
-        }
+        validateFileExists();
 
         processorExecutorService = new InlineExecutorService();
     }
@@ -87,4 +86,10 @@ public class FilePcapWorker extends AbstractPcapWorker {
     public String getExecutorState() {
         return "inline";
     }
+
+    private void validateFileExists() {
+        if (!file.exists()) {
+            throw new PcapFileNotFoundException(file, directory);
+        }
+    }
 }

src/main/java/ru/serega6531/packmate/service/optimization/HttpChunksProcessor.java

@@ -1,180 +0,0 @@
-package ru.serega6531.packmate.service.optimization;
-
-import com.google.common.primitives.Bytes;
-import lombok.RequiredArgsConstructor;
-import lombok.SneakyThrows;
-import lombok.extern.slf4j.Slf4j;
-import ru.serega6531.packmate.model.Packet;
-import ru.serega6531.packmate.utils.BytesUtils;
-import ru.serega6531.packmate.utils.PacketUtils;
-
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-@Slf4j
-@RequiredArgsConstructor
-public class HttpChunksProcessor {
-
-    private static final String CHUNKED_HTTP_HEADER = "transfer-encoding: chunked\r\n";
-    private final List<Packet> packets;
-
-    private int position;
-    private boolean chunkStarted = false;
-    private final List<Packet> chunkPackets = new ArrayList<>();
-
-    public void processChunkedEncoding() {
-        int start = -1;
-
-        for (position = 0; position < packets.size(); position++) {
-            Packet packet = packets.get(position);
-            if (!packet.isIncoming()) {
-                String content = packet.getContentString();
-
-                boolean http = content.startsWith("HTTP/");
-                int contentPos = content.indexOf("\r\n\r\n");
-
-                if (http && contentPos != -1) {   // начало body
-                    String headers = content.substring(0, contentPos + 2);  // захватываем первые \r\n
-                    boolean chunked = headers.toLowerCase().contains(CHUNKED_HTTP_HEADER);
-                    if (chunked) {
-                        chunkStarted = true;
-                        start = position;
-                        chunkPackets.add(packet);
-
-                        checkCompleteChunk(chunkPackets, start);
-                    } else {
-                        chunkStarted = false;
-                        chunkPackets.clear();
-                    }
-                } else if (chunkStarted) {
-                    chunkPackets.add(packet);
-                    checkCompleteChunk(chunkPackets, start);
-                }
-            }
-        }
-    }
-
-    private void checkCompleteChunk(List<Packet> packets, int start) {
-        boolean end = Arrays.equals(packets.get(packets.size() - 1).getContent(), "0\r\n\r\n".getBytes()) ||
-                BytesUtils.endsWith(packets.get(packets.size() - 1).getContent(), "\r\n0\r\n\r\n".getBytes());
-
-        if (end) {
-            processChunk(packets, start);
-        }
-    }
-
-    @SneakyThrows
-    private void processChunk(List<Packet> packets, int start) {
-        //noinspection OptionalGetWithoutIsPresent
-        final byte[] content = PacketUtils.mergePackets(packets).get();
-
-        ByteArrayOutputStream output = new ByteArrayOutputStream(content.length);
-
-        final int contentStart = Bytes.indexOf(content, "\r\n\r\n".getBytes()) + 4;
-        output.write(content, 0, contentStart);
-
-        ByteBuffer buf = ByteBuffer.wrap(Arrays.copyOfRange(content, contentStart, content.length));
-
-        while (true) {
-            final int chunkSize = readChunkSize(buf);
-
-            switch (chunkSize) {
-                case -1 -> {
-                    log.warn("Failed to merge chunks, next chunk size not found");
-                    resetChunk();
-                    return;
-                }
-                case 0 -> {
-                    buildWholePacket(packets, start, output);
-                    return;
-                }
-                default -> {
-                    if (!readChunk(buf, chunkSize, output)) return;
-                    if (!readTrailer(buf)) return;
-                }
-            }
-        }
-    }
-
-    private boolean readChunk(ByteBuffer buf, int chunkSize, ByteArrayOutputStream output) throws IOException {
-        if (chunkSize > buf.remaining()) {
-            log.warn("Failed to merge chunks, chunk size too big: {} + {} > {}",
-                    buf.position(), chunkSize, buf.capacity());
-            resetChunk();
-            return false;
-        }
-
-        byte[] chunk = new byte[chunkSize];
-        buf.get(chunk);
-        output.write(chunk);
-        return true;
-    }
-
-    private boolean readTrailer(ByteBuffer buf) {
-        if (buf.remaining() < 2) {
-            log.warn("Failed to merge chunks, chunk doesn't end with \\r\\n");
-            resetChunk();
-            return false;
-        }
-
-        int c1 = buf.get();
-        int c2 = buf.get();
-
-        if (c1 != '\r' || c2 != '\n') {
-            log.warn("Failed to merge chunks, chunk trailer is not equal to \\r\\n");
-            resetChunk();
-            return false;
-        }
-
-        return true;
-    }
-
-    private void buildWholePacket(List<Packet> packets, int start, ByteArrayOutputStream output) {
-        Packet result = Packet.builder()
-                .incoming(false)
-                .timestamp(packets.get(0).getTimestamp())
-                .ungzipped(false)
-                .webSocketParsed(false)
-                .tlsDecrypted(packets.get(0).isTlsDecrypted())
-                .content(output.toByteArray())
-                .build();
-
-        this.packets.removeAll(packets);
-        this.packets.add(start, result);
-
-        resetChunk();
-        position = start + 1;
-    }
-
-    private void resetChunk() {
-        chunkStarted = false;
-        chunkPackets.clear();
-    }
-
-    private int readChunkSize(ByteBuffer buf) {
-        StringBuilder sb = new StringBuilder();
-
-        while (buf.remaining() > 2) {
-            byte b = buf.get();
-
-            if ((b >= '0' && b <= '9') || (b >= 'a' && b <= 'f')) {
-                sb.append((char) b);
-            } else if (b == '\r') {
-                if (buf.get() == '\n') {
-                    return Integer.parseInt(sb.toString(), 16);
-                } else {
-                    return -1; // после \r не идет \n
-                }
-            } else {
-                return -1;
-            }
-        }
-
-        return -1;
-    }
-
-}

src/main/java/ru/serega6531/packmate/service/optimization/HttpGzipProcessor.java

@@ -1,121 +0,0 @@
-package ru.serega6531.packmate.service.optimization;
-
-import com.google.common.primitives.Bytes;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.apache.commons.io.IOUtils;
-import org.apache.commons.lang3.ArrayUtils;
-import ru.serega6531.packmate.model.Packet;
-import ru.serega6531.packmate.utils.PacketUtils;
-
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.List;
-import java.util.zip.GZIPInputStream;
-import java.util.zip.ZipException;
-
-@Slf4j
-@RequiredArgsConstructor
-public class HttpGzipProcessor {
-
-    private static final String GZIP_HTTP_HEADER = "content-encoding: gzip\r\n";
-    private static final byte[] GZIP_HEADER = {0x1f, (byte) 0x8b, 0x08};
-
-    private final List<Packet> packets;
-
-    boolean gzipStarted = false;
-    private int position;
-
-    /**
-     * Попытаться распаковать GZIP из исходящих http пакетов. <br>
-     * GZIP поток начинается на найденном HTTP пакете с заголовком Content-Encoding: gzip
-     * (при этом заголовок HTTP может быть в другом пакете)<br>
-     * Поток заканчивается при обнаружении нового HTTP заголовка,
-     * при смене стороны передачи или при окончании всего стрима
-     */
-    public void unpackGzip() {
-        int gzipStartPacket = 0;
-
-        for (position = 0; position < packets.size(); position++) {
-            Packet packet = packets.get(position);
-
-            if (packet.isIncoming() && gzipStarted) {   // поток gzip закончился
-                extractGzip(gzipStartPacket, position - 1);
-            } else if (!packet.isIncoming()) {
-                String content = packet.getContentString();
-
-                int contentPos = content.indexOf("\r\n\r\n");
-                boolean http = content.startsWith("HTTP/");
-
-                if (http && gzipStarted) {  // начался новый http пакет, заканчиваем старый gzip поток
-                    extractGzip(gzipStartPacket, position - 1);
-                }
-
-                if (contentPos != -1) {   // начало body
-                    String headers = content.substring(0, contentPos + 2);  // захватываем первые \r\n
-                    boolean gziped = headers.toLowerCase().contains(GZIP_HTTP_HEADER);
-                    if (gziped) {
-                        gzipStarted = true;
-                        gzipStartPacket = position;
-                    }
-                }
-            }
-        }
-
-        if (gzipStarted) {  // стрим закончился gzip пакетом
-            extractGzip(gzipStartPacket, packets.size() - 1);
-        }
-    }
-
-    /**
-     * Попытаться распаковать кусок пакетов с gzip body и вставить результат на их место
-     */
-    private void extractGzip(int gzipStartPacket, int gzipEndPacket) {
-        List<Packet> cut = packets.subList(gzipStartPacket, gzipEndPacket + 1);
-
-        Packet decompressed = decompressGzipPackets(cut);
-        if (decompressed != null) {
-            packets.removeAll(cut);
-            packets.add(gzipStartPacket, decompressed);
-
-            gzipStarted = false;
-            position = gzipStartPacket + 1;  // продвигаем указатель на следующий после склеенного блок
-        }
-    }
-
-    private Packet decompressGzipPackets(List<Packet> cut) {
-        //noinspection OptionalGetWithoutIsPresent
-        final byte[] content = PacketUtils.mergePackets(cut).get();
-
-        final int gzipStart = Bytes.indexOf(content, GZIP_HEADER);
-        byte[] httpHeader = Arrays.copyOfRange(content, 0, gzipStart);
-        byte[] gzipBytes = Arrays.copyOfRange(content, gzipStart, content.length);
-
-        try {
-            final GZIPInputStream gzipStream = new GZIPInputStream(new ByteArrayInputStream(gzipBytes));
-            ByteArrayOutputStream out = new ByteArrayOutputStream();
-            IOUtils.copy(gzipStream, out);
-            byte[] newContent = ArrayUtils.addAll(httpHeader, out.toByteArray());
-
-            log.debug("GZIP decompressed: {} -> {} bytes", gzipBytes.length, out.size());
-
-            return Packet.builder()
-                    .incoming(false)
-                    .timestamp(cut.get(0).getTimestamp())
-                    .ungzipped(true)
-                    .webSocketParsed(false)
-                    .tlsDecrypted(cut.get(0).isTlsDecrypted())
-                    .content(newContent)
-                    .build();
-        } catch (ZipException e) {
-            log.warn("Failed to decompress gzip, leaving as it is: {}", e.getMessage());
-        } catch (IOException e) {
-            log.error("decompress gzip", e);
-        }
-
-        return null;
-    }
-
-}

src/main/java/ru/serega6531/packmate/service/optimization/HttpProcessor.java

@@ -0,0 +1,65 @@
+package ru.serega6531.packmate.service.optimization;
+
+import lombok.extern.slf4j.Slf4j;
+import rawhttp.core.HttpMessage;
+import rawhttp.core.RawHttp;
+import rawhttp.core.RawHttpOptions;
+import rawhttp.core.body.BodyReader;
+import rawhttp.core.errors.InvalidHttpHeader;
+import rawhttp.core.errors.InvalidHttpRequest;
+import rawhttp.core.errors.InvalidHttpResponse;
+import rawhttp.core.errors.InvalidMessageFrame;
+import rawhttp.core.errors.UnknownEncodingException;
+import ru.serega6531.packmate.model.Packet;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.util.List;
+import java.util.Optional;
+
+@Slf4j
+public class HttpProcessor {
+
+    private static final RawHttp rawHttp = new RawHttp(RawHttpOptions.strict());
+
+    public void process(List<Packet> packets) {
+        packets.stream()
+                .filter(p -> !p.isWebSocketParsed())
+                .forEach(this::processPacket);
+    }
+
+    private void processPacket(Packet packet) {
+        try {
+            ByteArrayInputStream contentStream = new ByteArrayInputStream(packet.getContent());
+            HttpMessage message;
+
+            if (packet.isIncoming()) {
+                message = rawHttp.parseRequest(contentStream).eagerly();
+            } else {
+                message = rawHttp.parseResponse(contentStream).eagerly();
+            }
+
+            packet.setContent(getDecodedMessage(message));
+            packet.setHasHttpBody(message.getBody().isPresent());
+        } catch (IOException | InvalidHttpRequest | InvalidHttpResponse | InvalidHttpHeader | InvalidMessageFrame |
+                 UnknownEncodingException e) {
+            log.warn("Could not parse http packet", e);
+        }
+    }
+
+    private byte[] getDecodedMessage(HttpMessage message) throws IOException {
+        ByteArrayOutputStream os = new ByteArrayOutputStream(256);
+
+        message.getStartLine().writeTo(os);
+        message.getHeaders().writeTo(os);
+
+        Optional<? extends BodyReader> body = message.getBody();
+        if (body.isPresent()) {
+            body.get().writeDecodedTo(os, 256);
+        }
+
+        return os.toByteArray();
+    }
+
+}

src/main/java/ru/serega6531/packmate/service/optimization/HttpUrldecodeProcessor.java

@@ -1,6 +1,5 @@
 package ru.serega6531.packmate.service.optimization;
 
-import lombok.AllArgsConstructor;
 import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 import ru.serega6531.packmate.model.Packet;
@@ -9,17 +8,14 @@ import java.net.URLDecoder;
 import java.nio.charset.StandardCharsets;
 import java.util.List;
 
-@AllArgsConstructor
 @Slf4j
 public class HttpUrldecodeProcessor {
 
-    private final List<Packet> packets;
-
     /**
      * Декодирование urlencode с http пакета до смены стороны или окончания стрима
      */
     @SneakyThrows
-    public void urldecodeRequests() {
+    public void urldecodeRequests(List<Packet> packets) {
         boolean httpStarted = false;
 
         for (Packet packet : packets) {

src/main/java/ru/serega6531/packmate/service/optimization/PacketsMerger.java

@@ -1,30 +1,25 @@
 package ru.serega6531.packmate.service.optimization;
 
-import lombok.AllArgsConstructor;
 import ru.serega6531.packmate.model.Packet;
 import ru.serega6531.packmate.utils.PacketUtils;
 
 import java.util.List;
 
-@AllArgsConstructor
 public class PacketsMerger {
 
-    private final List<Packet> packets;
-
     /**
-     * Сжать соседние пакеты в одном направлении в один.
-     * Выполняется после других оптимизаций чтобы правильно определять границы пакетов.
+     * Сжать соседние пакеты в одном направлении в один. Не склеивает WS и не-WS пакеты.
      */
-    public void mergeAdjacentPackets() {
+    public void mergeAdjacentPackets(List<Packet> packets) {
         int start = 0;
         int packetsInRow = 0;
-        boolean incoming = true;
+        Packet previous = null;
 
         for (int i = 0; i < packets.size(); i++) {
             Packet packet = packets.get(i);
-            if (packet.isIncoming() != incoming) {
+            if (previous == null || !shouldBeInSameBatch(packet, previous)) {
                 if (packetsInRow > 1) {
-                    compress(start, i);
+                    compress(packets, start, i);
 
                     i = start + 1;  // продвигаем указатель на следующий после склеенного блок
                 }
@@ -34,36 +29,40 @@ public class PacketsMerger {
                 packetsInRow++;
             }
 
-            incoming = packet.isIncoming();
+            previous = packet;
         }
 
         if (packetsInRow > 1) {
-            compress(start, packets.size());
+            compress(packets, start, packets.size());
         }
     }
 
     /**
      * Сжать кусок со start по end в один пакет
      */
-    private void compress(int start, int end) {
+    private void compress(List<Packet> packets, int start, int end) {
         final List<Packet> cut = packets.subList(start, end);
         final long timestamp = cut.get(0).getTimestamp();
-        final boolean ungzipped = cut.stream().anyMatch(Packet::isUngzipped);
+        final boolean httpProcessed = cut.stream().anyMatch(Packet::isHttpProcessed);
         final boolean webSocketParsed = cut.stream().anyMatch(Packet::isWebSocketParsed);
         final boolean tlsDecrypted = cut.get(0).isTlsDecrypted();
         final boolean incoming = cut.get(0).isIncoming();
-        //noinspection OptionalGetWithoutIsPresent
-        final byte[] content = PacketUtils.mergePackets(cut).get();
+        final byte[] content = PacketUtils.mergePackets(cut);
 
         packets.removeAll(cut);
         packets.add(start, Packet.builder()
                 .incoming(incoming)
                 .timestamp(timestamp)
-                .ungzipped(ungzipped)
+                .httpProcessed(httpProcessed)
                 .webSocketParsed(webSocketParsed)
                 .tlsDecrypted(tlsDecrypted)
                 .content(content)
                 .build());
     }
 
+    private boolean shouldBeInSameBatch(Packet p1, Packet p2) {
+        return p1.isIncoming() == p2.isIncoming() &&
+                p1.isWebSocketParsed() == p2.isWebSocketParsed();
+    }
+
 }

src/main/java/ru/serega6531/packmate/service/optimization/StreamOptimizer.java

@@ -1,7 +1,6 @@
 package ru.serega6531.packmate.service.optimization;
 
 import lombok.AllArgsConstructor;
-import lombok.SneakyThrows;
 import lombok.extern.slf4j.Slf4j;
 import ru.serega6531.packmate.model.CtfService;
 import ru.serega6531.packmate.model.Packet;
@@ -16,6 +15,11 @@ public class StreamOptimizer {
     private final CtfService service;
     private List<Packet> packets;
 
+    private final PacketsMerger merger = new PacketsMerger();
+    private final HttpUrldecodeProcessor urldecodeProcessor = new HttpUrldecodeProcessor();
+    private final HttpProcessor httpProcessor = new HttpProcessor();
+
+
     /**
      * Вызвать для выполнения оптимизаций на переданном списке пакетов.
      */
@@ -29,51 +33,42 @@ public class StreamOptimizer {
             }
         }
 
-        if (service.isProcessChunkedEncoding()) {
-            try {
-                processChunkedEncoding();
-            } catch (Exception e) {
-                log.warn("Error optimizing stream (chunks)", e);
-                return packets;
-            }
-        }
-
-        if (service.isUngzipHttp()) {
-            try {
-                unpackGzip();
-            } catch (Exception e) {
-                log.warn("Error optimizing stream (gzip)", e);
-                return packets;
-            }
-        }
-
         if (service.isParseWebSockets()) {
             try {
                 parseWebSockets();
             } catch (Exception e) {
-                log.warn("Error optimizing stream (websocketss)", e);
+                log.warn("Error optimizing stream (websockets)", e);
                 return packets;
             }
         }
 
         if (service.isUrldecodeHttpRequests()) {
             try {
-                urldecodeRequests();
+                urldecodeProcessor.urldecodeRequests(packets);
             } catch (Exception e) {
                 log.warn("Error optimizing stream (urldecode)", e);
                 return packets;
             }
         }
 
-        if (service.isMergeAdjacentPackets()) {
+        if (service.isMergeAdjacentPackets() || service.isHttp()) {
             try {
-                mergeAdjacentPackets();
+                merger.mergeAdjacentPackets(packets);
             } catch (Exception e) {
                 log.warn("Error optimizing stream (adjacent)", e);
                 return packets;
             }
         }
 
+        if (service.isHttp()) {
+            try {
+                httpProcessor.process(packets);
+            } catch (Exception e) {
+                log.warn("Error optimizing stream (http)", e);
+                return packets;
+            }
+        }
+
         return packets;
     }
 
@@ -86,44 +81,6 @@ public class StreamOptimizer {
         }
     }
 
-    /**
-     * Сжать соседние пакеты в одном направлении в один.
-     * Выполняется после других оптимизаций чтобы правильно определять границы пакетов.
-     */
-    private void mergeAdjacentPackets() {
-        final PacketsMerger merger = new PacketsMerger(packets);
-        merger.mergeAdjacentPackets();
-    }
-
-    /**
-     * Декодирование urlencode с http пакета до смены стороны или окончания стрима
-     */
-    @SneakyThrows
-    private void urldecodeRequests() {
-        final HttpUrldecodeProcessor processor = new HttpUrldecodeProcessor(packets);
-        processor.urldecodeRequests();
-    }
-
-    /**
-     * <a href="https://ru.wikipedia.org/wiki/Chunked_transfer_encoding">Chunked transfer encoding</a>
-     */
-    private void processChunkedEncoding() {
-        HttpChunksProcessor processor = new HttpChunksProcessor(packets);
-        processor.processChunkedEncoding();
-    }
-
-    /**
-     * Попытаться распаковать GZIP из исходящих http пакетов. <br>
-     * GZIP поток начинается на найденном HTTP пакете с заголовком Content-Encoding: gzip
-     * (при этом заголовок HTTP может быть в другом пакете)<br>
-     * Поток заканчивается при обнаружении нового HTTP заголовка,
-     * при смене стороны передачи или при окончании всего стрима
-     */
-    private void unpackGzip() {
-        final HttpGzipProcessor processor = new HttpGzipProcessor(packets);
-        processor.unpackGzip();
-    }
-
     private void parseWebSockets() {
         if (!packets.get(0).getContentString().contains("HTTP/")) {
             return;

src/main/java/ru/serega6531/packmate/service/optimization/TlsDecryptor.java

@@ -182,15 +182,12 @@ public class TlsDecryptor {
 
                     decoded = clearDecodedData(decoded);
 
-                    result.add(Packet.builder()
+                    result.add(
+                            packet.toBuilder()
                                     .content(decoded)
-                            .incoming(packet.isIncoming())
-                            .timestamp(packet.getTimestamp())
-                            .ungzipped(false)
-                            .webSocketParsed(false)
                                     .tlsDecrypted(true)
-                            .ttl(packet.getTtl())
-                            .build());
+                                    .build()
+                    );
                 }
             }
         }

src/main/java/ru/serega6531/packmate/service/optimization/WebSocketsParser.java

@@ -120,14 +120,9 @@ public class WebSocketsParser {
     }
 
     private Packet mimicPacket(Packet packet, byte[] content, boolean ws) {
-        return Packet.builder()
+        return packet.toBuilder()
                 .content(content)
-                .incoming(packet.isIncoming())
-                .timestamp(packet.getTimestamp())
-                .ttl(packet.getTtl())
-                .ungzipped(packet.isUngzipped())
                 .webSocketParsed(ws)
-                .tlsDecrypted(packet.isTlsDecrypted())
                 .build();
     }
 
@@ -138,8 +133,7 @@ public class WebSocketsParser {
         for (List<Packet> side : sides) {
             final Packet lastPacket = side.get(0);
 
-            //noinspection OptionalGetWithoutIsPresent
-            final byte[] wsContent = PacketUtils.mergePackets(side).get();
+            final byte[] wsContent = PacketUtils.mergePackets(side);
 
             final ByteBuffer buffer = ByteBuffer.wrap(wsContent);
             List<Framedata> frames;
@@ -153,14 +147,10 @@ public class WebSocketsParser {
 
             for (Framedata frame : frames) {
                 if (frame instanceof DataFrame) {
-                    parsedPackets.add(Packet.builder()
+                    parsedPackets.add(
+                            lastPacket.toBuilder()
                                     .content(frame.getPayloadData().array())
-                            .incoming(lastPacket.isIncoming())
-                            .timestamp(lastPacket.getTimestamp())
-                            .ttl(lastPacket.getTtl())
-                            .ungzipped(lastPacket.isUngzipped())
                                     .webSocketParsed(true)
-                            .tlsDecrypted(lastPacket.isTlsDecrypted())
                                     .build()
                     );
                 }
@@ -179,13 +169,10 @@ public class WebSocketsParser {
     }
 
     private String getHandshake(final List<Packet> packets) {
-        final String handshake = PacketUtils.mergePackets(packets)
-                .map(String::new)
-                .orElse(null);
+        final String handshake = new String(PacketUtils.mergePackets(packets));
 
-        if (handshake == null ||
-                !handshake.toLowerCase().contains(WEBSOCKET_CONNECTION_HEADER) ||
-                !handshake.toLowerCase().contains(WEBSOCKET_UPGRADE_HEADER)) {
+        if (!handshake.toLowerCase().contains(WEBSOCKET_CONNECTION_HEADER)
+                || !handshake.toLowerCase().contains(WEBSOCKET_UPGRADE_HEADER)) {
             return null;
         }
 

src/main/java/ru/serega6531/packmate/utils/PacketUtils.java

@@ -1,20 +1,28 @@
 package ru.serega6531.packmate.utils;
 
 import lombok.experimental.UtilityClass;
-import org.apache.commons.lang3.ArrayUtils;
 import ru.serega6531.packmate.model.Packet;
 
+import java.io.ByteArrayOutputStream;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Optional;
 
 @UtilityClass
 public class PacketUtils {
 
-    public Optional<byte[]> mergePackets(List<Packet> cut) {
-        return cut.stream()
+    public byte[] mergePackets(List<Packet> cut) {
+        int size = cut.stream()
                 .map(Packet::getContent)
-                .reduce(ArrayUtils::addAll);
+                .mapToInt(c -> c.length)
+                .sum();
+
+        ByteArrayOutputStream os = new ByteArrayOutputStream(size);
+
+        cut.stream()
+                .map(Packet::getContent)
+                .forEach(os::writeBytes);
+
+        return os.toByteArray();
     }
 
     public List<List<Packet>> sliceToSides(List<Packet> packets) {

src/test/java/ru/serega6531/packmate/StreamOptimizerTest.java

@@ -3,8 +3,7 @@ package ru.serega6531.packmate;
 import org.apache.commons.lang3.ArrayUtils;
 import org.junit.jupiter.api.Test;
 import ru.serega6531.packmate.model.Packet;
-import ru.serega6531.packmate.service.optimization.HttpChunksProcessor;
-import ru.serega6531.packmate.service.optimization.HttpGzipProcessor;
+import ru.serega6531.packmate.service.optimization.HttpProcessor;
 import ru.serega6531.packmate.service.optimization.HttpUrldecodeProcessor;
 import ru.serega6531.packmate.service.optimization.PacketsMerger;
 
@@ -27,18 +26,18 @@ class StreamOptimizerTest {
         List<Packet> list = new ArrayList<>();
         list.add(p);
 
-        new HttpGzipProcessor(list).unpackGzip();
+        new HttpProcessor().process(list);
         final String processed = list.get(0).getContentString();
         assertTrue(processed.contains("aaabbb"));
     }
 
     @Test
     void testUrldecodeRequests() {
-        Packet p = createPacket("GET /?q=%D0%B0+%D0%B1 HTTP/1.1\r\n\r\n".getBytes(), true);
+        Packet p = createPacket("GET /?q=%D0%B0+%D0%B1 HTTP/1.1\r\nHost: localhost:8080\r\n\r\n".getBytes(), true);
         List<Packet> list = new ArrayList<>();
         list.add(p);
 
-        new HttpUrldecodeProcessor(list).urldecodeRequests();
+        new HttpUrldecodeProcessor().urldecodeRequests(list);
         final String processed = list.get(0).getContentString();
         assertTrue(processed.contains("а б"));
     }
@@ -60,7 +59,7 @@ class StreamOptimizerTest {
         list.add(p5);
         list.add(p6);
 
-        new PacketsMerger(list).mergeAdjacentPackets();
+        new PacketsMerger().mergeAdjacentPackets(list);
 
         assertEquals(4, list.size());
         assertEquals(2, list.get(1).getContent().length);
@@ -74,7 +73,7 @@ class StreamOptimizerTest {
                          "6\r\nChunk1\r\n6\r\nChunk2\r\n0\r\n\r\n";
 
         List<Packet> packets = new ArrayList<>(List.of(createPacket(content.getBytes(), false)));
-        new HttpChunksProcessor(packets).processChunkedEncoding();
+        new HttpProcessor().process(packets);
 
         assertEquals(1, packets.size());
         assertTrue(packets.get(0).getContentString().contains("Chunk1Chunk2"));