In case of heavy load, receiving error message - CaughtExceptionType: javax.xml.transform.TransformerException, CaughtExceptionMessage: Unexpected EOF in prolog

Issue

• In case of heavy payload, request is not processed and when exchange is converted to string it is empty.
• Code snippet

CachedOutputStream csnew = (CachedOutputStream)  message.getContent(OutputStream.class);
csnew.flush();
InputStream inputStream = csnew.getInputStream();
byte[] streamBytes = IOUtils.readBytesFromStream(inputStream);
inputStream.close();
String soapMessage = new String(streamBytes, "UTF8");
LOGGER.info("Soap message : "+ soapMessage);
soapMessage = soapMessage.replace("&", "&");
LOGGER.info("Message after handling  : "+ soapMessage);
InputStream stream2 = new ByteArrayInputStream(soapMessage.getBytes(StandardCharsets.UTF_8));
IOUtils.copy(stream2, os);
stream2.close();
os.flush();
message.setContent(OutputStream.class, os);

• Error Logs

, CaughtExceptionType: javax.xml.transform.TransformerException, CaughtExceptionMessage: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0], StackTrace: ; Line#: 1
javax.xml.transform.TransformerException: Unexpected EOF in prolog
at [row,col {unknown-source}]: [1,0]
        at org.apache.xalan.transformer.TransformerImpl.fatalError(TransformerImpl.java:780)