public static Buffer appendContentAndTrim(
final MemoryManager memoryManager, Buffer dstBuffer, Buffer httpContentBuffer) {
Buffer resultBuffer = null;
do {
Buffer contentRemainder = null;
if (httpContentBuffer.remaining() > MAX_BODY_CHUNK_CONTENT_SIZE) {
contentRemainder =
httpContentBuffer.split(httpContentBuffer.position() + MAX_BODY_CHUNK_CONTENT_SIZE);
}
final Buffer encodedContentChunk =
appendContentChunkAndTrim(memoryManager, dstBuffer, httpContentBuffer);
resultBuffer = Buffers.appendBuffers(memoryManager, resultBuffer, encodedContentChunk);
// dstBuffer use only once, when it comes from caller
dstBuffer = null;
httpContentBuffer = contentRemainder;
} while (httpContentBuffer != null && httpContentBuffer.hasRemaining());
return resultBuffer;
}
/**
* @param size the requested size of the {@link Buffer} to be returned.
* @return the {@link Buffer} of a given size, which represents a chunk of the underlying {@link
* Buffer} which contains incoming request data. This method detaches the returned {@link
* Buffer}, so user code becomes responsible for handling its life-cycle.
*/
public Buffer readBuffer(final int size) {
if (LOGGER.isLoggable(LOGGER_LEVEL)) {
log(
"InputBuffer %s readBuffer(size), size: %s. Ready content: %s",
this, size, inputContentBuffer);
}
final int remaining = inputContentBuffer.remaining();
if (size > remaining) {
throw new IllegalStateException("Can not read more bytes than available");
}
final Buffer buffer;
if (size == remaining) {
buffer = inputContentBuffer;
inputContentBuffer = Buffers.EMPTY_BUFFER;
} else {
final Buffer tmpBuffer = inputContentBuffer.split(inputContentBuffer.position() + size);
buffer = inputContentBuffer;
inputContentBuffer = tmpBuffer;
}
return buffer;
}