send binary data slowly (both on basic remote and async remote sometimes)

"DataTransferProtocol.DataNode.Builder message
= DataTransferProtocol.DataNode.newBuilder();
message.setAppendStatus(appendStatus);
message.setData(ByteString.copyFrom(data));
long begin = System.currentTimeMillis();
session.getBasicRemote().sendBinary(
ByteBuffer.wrap(message.build().toByteArray()));
long cost = System.currentTimeMillis() - begin;"

I need to send audio data in binary form, which occasionally sends blocking problems.The server is unable to receive the data for a long time, causing a session timeout and closing the session.The problem is low frequency, 5-8 hours of uninterrupted send data may only occur once.Hope help trying to solve,