fix: TCP half-packet causes decoding exception (#24)
diff --git a/runner-core/src/main/java/org/apache/apisix/plugin/runner/codec/DelayedDecoder.java b/runner-core/src/main/java/org/apache/apisix/plugin/runner/codec/DelayedDecoder.java
new file mode 100644
index 0000000..c950390
--- /dev/null
+++ b/runner-core/src/main/java/org/apache/apisix/plugin/runner/codec/DelayedDecoder.java
@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.apache.apisix.plugin.runner.codec;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.handler.codec.LengthFieldBasedFrameDecoder;
+
+public class DelayedDecoder extends LengthFieldBasedFrameDecoder {
+
+ public DelayedDecoder() {
+ super(16777215, 0, 0);
+ }
+
+ @Override
+ protected ByteBuf decode(ChannelHandlerContext ctx, ByteBuf in) {
+ in.readByte();
+ int length = in.readMedium();
+ if (in.readableBytes() < length) {
+ return null;
+ }
+ in.readerIndex(0);
+
+ int readLength = in.readableBytes();
+ return in.retainedSlice(0, readLength);
+ }
+}
\ No newline at end of file
diff --git a/runner-core/src/main/java/org/apache/apisix/plugin/runner/server/ApplicationRunner.java b/runner-core/src/main/java/org/apache/apisix/plugin/runner/server/ApplicationRunner.java
index ca7e68c..5b0f889 100644
--- a/runner-core/src/main/java/org/apache/apisix/plugin/runner/server/ApplicationRunner.java
+++ b/runner-core/src/main/java/org/apache/apisix/plugin/runner/server/ApplicationRunner.java
@@ -20,6 +20,7 @@
import io.netty.channel.unix.DomainSocketAddress;
import io.netty.handler.logging.LoggingHandler;
import lombok.RequiredArgsConstructor;
+import org.apache.apisix.plugin.runner.codec.DelayedDecoder;
import org.apache.apisix.plugin.runner.handler.IOHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -64,7 +65,8 @@
// if (Objects.nonNull(channelHandlers)) {
// channel.pipeline().addLast(channelHandlers);
// }
- channel.pipeline().addFirst("logger", new LoggingHandler());
+ channel.pipeline().addFirst("logger", new LoggingHandler())
+ .addAfter("logger", "delayedDecoder", new DelayedDecoder());
});
if (Objects.nonNull(handler)) {