diff --git a/gogo/src/aQute/threadio/ThreadInputStream.java b/gogo/src/aQute/threadio/ThreadInputStream.java
new file mode 100644
index 0000000..e7fc918
--- /dev/null
+++ b/gogo/src/aQute/threadio/ThreadInputStream.java
@@ -0,0 +1,64 @@
+/*
+ * 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 aQute.threadio;
+
+import java.io.*;
+
+public class ThreadInputStream extends InputStream {
+    ThreadLocal<InputStream> map = new ThreadLocal<InputStream>();
+	InputStream dflt;
+
+	public ThreadInputStream(InputStream in) {
+		dflt = in;
+	}
+
+	public int read(byte[] buffer, int offset, int length) throws IOException {
+		return getCurrent().read(buffer, offset, length);
+	}
+
+	public int read(byte[] buffer) throws IOException {
+		return getCurrent().read(buffer);
+	}
+
+	private InputStream getCurrent() {
+		InputStream in = map.get();
+		if (in != null)
+			return in;
+		return dflt;
+	}
+
+	public int read() throws IOException {
+		return getCurrent().read();
+	}
+
+	public void setStream(InputStream in) {
+		if ( in != dflt && in != this )
+			map.set(in);
+		else
+			map.remove();
+	}
+
+	public void end() {
+		map.remove();
+	}
+
+	InputStream getRoot() {
+		return dflt;
+	}
+}