How should I record `HttpServletRequest`s that are sent to `doPost` in an `HttpServlet` for later playback?

Question

I want to dump some requests (of type javax.servlet.http.HttpServletRequest) into a file and then later replay them from the file, so that I can test future cha

Answer 1

In my particular case, I eventually solved the problem by using a CodedOutputStream to write the com.google.protobuf.GeneratedMessage (foo below):

ByteArrayOutputStream bos = new ByteArrayOutputStream();
CodedOutputStream cos = CodedOutputStream.newInstance(bos);
foo.writeTo(cos);

This can be read in using a CodedInputStream with something like:

byte[] ba = readBytesFromOutputFile();
CodedInputStream cis = CodedInputStream.newInstance(ba);

The CodedInputStream can then be passed to a message builder to complete the deserialization.