chrome70 + stompjs + sockjs-client + java spring boot 2.0 connect too slow

[xzzh999]

chrome: 70.0.3538.67
stompjs: "^2.3.3",
sockjs-client: "^1.3.0",
spring boot use websocket: 2.0.2.RELEASE

As the title say, when i print the timestamp of connect function, it takes nearly 6 or 12 seconds or even failed to establish the connection, why it's so slow?

Here is the client side code:

addStomp(state, url) {
            if (!state.stompClients.has(url))
                state.stompClients.set(url, Stomp.over(new SockJS(url)));
        },

startSignalMonitor(context, { url, subUrl, callBack, errCallBack }) {
            return new Promise((resolve, reject) => {
                let subscribeClient;
                context.commit('addStomp', config.base_url_name+url)
                let stompClient = context.state.stompClients.get(config.base_url_name+url)
                stompClient.debug = msg => { };
                if (stompClient.connected) {
                    subscribeClient = stompClient.subscribe(subUrl, callBack, errCallBack)
                    resolve(subscribeClient)
                }
                else {
                    // TOO SLOW HERE!!!
                    stompClient.connect({}, () => {
                        subscribeClient = stompClient.subscribe(subUrl, callBack, errCallBack)
                        resolve(subscribeClient)
                    })
                }
            })
        }

Need u help, thanks!

[brycekahle]

I cannot debug your performance issues for you. I suggest you add timing along your request path to find out where the latency is coming from.

[xzzh999]

@brycekahle
Thank u for your reply, i have debugged it and found it's blocked on the connect function, maybe i should set a transport when create the object? what are the possible reasons for the connect function is too slow?

[brycekahle]

@xzzh999 The problem is likely your server, not the client.

[xzzh999]

@brycekahle
I found when i add a prefix base url, this will happen, eg:

In client side (fast)

//OK
ws://localhost:8081/ws/endpointChat   

In client side (slow or failed)

//SLOW or FAILED
ws://localhost:8081/MyServer/ws/endpointChat   

In server side (spring boot application.properties)

server.servlet.contextPath=/MyServer

I use vue.js 2.0 and webpack.

[xzzh999]

@brycekahle
When i use proxy table to proxy websocket, the problem comes!(too slow)
Here is the print:

[brycekahle]

@xzzh999 You might want to fix the obvious error shown in your log.

[xzzh999]

@brycekahle
Thank you for your reply.
The bug is confirmed, here is the reason.