private byte[] readPayload(ByteBuffer buffer, StompHeaderAccessor headerAccessor) {
Integer contentLength;
try {
contentLength = headerAccessor.getContentLength();
} catch (NumberFormatException ex) {
logger.warn("Ignoring invalid content-length: '" + headerAccessor);
contentLength = null;
}
if (contentLength != null && contentLength >= 0) {
if (buffer.remaining() > contentLength) {
byte[] payload = new byte[contentLength];
buffer.get(payload);
if (buffer.get() != 0) {
throw new StompConversionException("Frame must be terminated with a null octet");
}
return payload;
} else {
return null;
}
} else {
ByteArrayOutputStream payload = new ByteArrayOutputStream(256);
while (buffer.remaining() > 0) {
byte b = buffer.get();
if (b == 0) {
return payload.toByteArray();
} else {
payload.write(b);
}
}
}
return null;
}
