Tomcat 9.31 PUT/POST Request receiving Partial Data

[Bhavesh Mistry]

Hi Tomcat Team,

I have servlet filter for all requests to cache the entire PUT/POST
Payload.   When content is large 4KB or more, I am getting partial content
when I read from HttpServletRequest.getInputStream().  But I but 10 seconds
wait before consuming the input stream, I am getting entire content.  Can
you please let me know what is the correct way to wait for the entire
content is ready to consume from the tomcat servlet request input stream?


Filter Code:
If I put Thread.sleep(100000) at begin of filter, I am getting full
content.

@Override
protected void doFilterInternal(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse, FilterChain filterChain)
throws ServletException, IOException {
    CachedBodyHttpServletRequest cachedBodyHttpServletRequest = new
CachedBodyHttpServletRequest(httpServletRequest);
    filterChain.doFilter(cachedBodyHttpServletRequest, httpServletResponse);
}

// Wrapper to cache content.

public CachedBodyHttpServletRequest(HttpServletRequest request) throws
IOException {
    super(request);
    ServletInputStream inputStream = request.getInputStream();
    final int len = request.getContentLength();
    if (len >= 0) {
        cachedBody = new byte[len];
        ByteStreams.readFully(inputStream, cachedBody);
    } else {
        cachedBody = ByteStreams.toByteArray(inputStream);
    }
}


Thanks,

Bhavesh