如何更改 Spring 5 webflux websocket 客户端上的帧/缓冲区大小

Question

My Spring 5 webflux websocket client is throwing below Exception when server sends large messages. Can someone tell me how can I increase the frame size on the client?

Flux<String> input = Flux.just(StrJSON);

WebSocketClient client = new ReactorNettyWebSocketClient();
client.execute(new URI(url),
      session ->  session
                  .send(input.map(session::textMessage))
                  .thenMany(
                      session.receive()
                            .map(t->t.getPayloadAsText())

                            .log()
                    )
                    .then()          
        ).block();

Intermittent Exception:

io.netty.handler.codec.CorruptedFrameException: Max frame length of 65536 has been exceeded.    
    at io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder.protocolViolation(WebSocket08FrameDecoder.java:412)
    at io.netty.handler.codec.http.websocketx.WebSocket08FrameDecoder.decode(WebSocket08FrameDecoder.java:277)
    at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
 .....

Answer 1

Probably a bit late to help you.

According to this merge request you should set your client as type of ReactorNettyWebSocketClient instead of the interface WebSocketClient .

Then you can call client.setMaxFramePayloadLength(maxFramePayload);

So in your code you should have:

ReactorNettyWebSocketClient client = new ReactorNettyWebSocketClient();
client.setMaxFramePayloadLength(2097152);

client.execute(new URI(url),
      session ->  session
                  .send(input.map(session::textMessage))
                  .thenMany(
                      session.receive()
                            .map(t->t.getPayloadAsText())

                            .log()
                    )
                    .then()          
        ).block();