Not receiving ping frame from binance for Websocket Futures Market Stream

Websocket
1

Hi. I have a few questions about Websocket Market Streams for Futures:

  1. I get disconnected pretty often some days more often then others can be every 5-8 minutes. I don’t seem to receive the ping frames so I don’t send pongs back. Can this be an issue for the disconnects?
  2. Is it ok to connect to many Futures Websocket Market Streams from a single machine? Can this be an issue for the disconnects?
2

For futures, Ping frame is not available yet, it’s fine to have multi streams subscribed from one client.

Have you tried with different client tool to subscribe the stream?

3

Thanks for the reply. I wrote the javascript client using native browser WebSocket API.
I am connecting to ‘wss://fstream.binance.com/ws/’. On top of it stream '‘wss://fstream.binance.com/ws/{symbol}@depth’ also disconnects many times sporadically. I am having disconnects way to often. What can I do to improve this aspect? If I lose User Data Stream I am missing the important order updates. There’s gotta be a solution to this. Please advise.

4

Our websocket connection is quite stable,
maybe this https://2pd.github.io/ws/ tool can be useful to verify the connection.

5

This is the implementation I have. I decided to use a single WebSocket connection for @depth and account updates. Some days are worse than others. I connected over the wire now rather than wife and still get disconnected sporadically. Here is the code. Please let me know where it can be improved.

let refreshInterval;
const listenKey = // getting a listenKey here using POST /fapi/v1/listenKey
const ws = new WebSocket(“wss://fstream.binance.com/ws/” + listenKey);

ws.onopen = () => {
refreshInterval = setInterval(() => {
// doing PUT /fapi/v1/listenKey to keep the listenkey alive
}, 1000 * 60 * 29);
ws.send(
JSON.stringify({
method: ‘SUBSCRIBE’,
params: [someTicker + ‘@depth’],
id: 1,
})
);
};

ws.onclose = async () => {
clearInterval(refreshInterval);
// handling reconnect here. it happens many very randomly sometimes multiple times an hour - sometimes not as often - the least is probably a few times a day.
};

6

FYI I tried to connect to https://2pd.github.io/ws/ and after a few hours got [“Websocket connection closed”] message.

7

a few hours is much better than every 5-8 minutes, will forward to client for review.

13

I’ve run into the same issue and found a workaround. I shared the link below incase you are interested.

1 Like
14

When I use ClientWebSocket in C# I still get disconnected even though it handles the PING/PONG for me.

One thing that I figured out is that I need to space my subscriptions out a little bit (200ms) in order for the connection to not get reset. The docs mention that you can only send 5 messages per second:

WebSocket connections have a limit of 5 incoming messages per second. A message is considered:

I suspect this was causing my issues because I was subscribing in a loop without a delay between each sub.

15

There’re three things you can do to keep your stability:

  1. Always confirm if your network environment is in stable status
  2. If you don’t receive Ping Frame, send it from your end and you should expect a Pong
  3. If you don’t receive a Pong or if you lost your connection, reconnect it

From my testing, fstream.binance.com always sends Ping; Please confirm if you receive it by defining actions in on_ping()

11

The reason I connected them in a single ws connection was b/c both were closing frequently and I needed reconnect so it was easier to deal with a single connection. Thanks for the advice!

9

So you recommend to connect to USER_DATA_STREAM and MARKET_STREAM separately? What kind of ping frames you recommend to send for USER_DATA_STREAM - something like this is ok ws.send(‘ping’) ?