websocket server will block after send big text string

[hugebear]

start a websocket server by androidasync
use another websocket client (eg. postman) to connect server
call websocket.send(String s) to send a big size (eg. 20000 byte) text to client
the client will not receive the message
after block, client will not receive any message from server anymore

[hugebear]

correct the eg size, 200000 byte.