1 files changed, 81 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/handler/StandardLoggingHandler.java b/src/main/java/org/traccar/handler/StandardLoggingHandler.java
new file mode 100644
index 000000000..88010458f
--- /dev/null
+++ b/src/main/java/org/traccar/handler/StandardLoggingHandler.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright 2019 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.handler;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufUtil;
+import io.netty.channel.ChannelDuplexHandler;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.ChannelPromise;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.traccar.NetworkMessage;
+
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+
+public class StandardLoggingHandler extends ChannelDuplexHandler {
+
+    private static final Logger LOGGER = LoggerFactory.getLogger(StandardLoggingHandler.class);
+
+    @Override
+    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
+        log(ctx, false, msg);
+        super.channelRead(ctx, msg);
+    }
+
+    @Override
+    public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
+        log(ctx, true, msg);
+        super.write(ctx, msg, promise);
+    }
+
+    public void log(ChannelHandlerContext ctx, boolean downstream, Object o) {
+        if (o instanceof NetworkMessage) {
+            NetworkMessage networkMessage = (NetworkMessage) o;
+            if (networkMessage.getMessage() instanceof ByteBuf) {
+                log(ctx, downstream, networkMessage.getRemoteAddress(), (ByteBuf) networkMessage.getMessage());
+            }
+        } else if (o instanceof ByteBuf) {
+            log(ctx, downstream, ctx.channel().remoteAddress(), (ByteBuf) o);
+        }
+    }
+
+    public void log(ChannelHandlerContext ctx, boolean downstream, SocketAddress remoteAddress, ByteBuf buf) {
+        StringBuilder message = new StringBuilder();
+
+        message.append("[").append(ctx.channel().id().asShortText()).append(": ");
+        message.append(((InetSocketAddress) ctx.channel().localAddress()).getPort());
+        if (downstream) {
+            message.append(" > ");
+        } else {
+            message.append(" < ");
+        }
+
+        if (remoteAddress instanceof InetSocketAddress) {
+            message.append(((InetSocketAddress) remoteAddress).getHostString());
+        } else {
+            message.append("unknown");
+        }
+        message.append("]");
+
+        message.append(" HEX: ");
+        message.append(ByteBufUtil.hexDump(buf));
+
+        LOGGER.info(message.toString());
+    }
+
+}