DEBUG=* node your app.js

2023-02-14T06:23:44.302Z socket.io-client:url parse http://1234567890.us-east-1.elb.amazonaws.com:3000
2023-02-14T06:23:44.303Z socket.io-client new io instance for http://1234567890.us-east-1.elb.amazonaws.com:3000
2023-02-14T06:23:44.304Z socket.io-client:manager readyState closed
2023-02-14T06:23:44.304Z socket.io-client:manager opening http://1234567890.us-east-1.elb.amazonaws.com:3000
2023-02-14T06:23:44.304Z engine.io-client:socket creating transport "websocket"
2023-02-14T06:23:44.304Z engine.io-client:socket options: {"path":"/socket.io/","agent":false,"withCredentials":false,"upgrade":true,"timestampParam":"t","rememberUpgrade":false,"rejectUnauthorized":true,"perMessageDeflate":{"threshold":1024},"transportOptions":{},"closeOnBeforeunload":true,"reconnectionDelay":500,"transports":["websocket"],"hostname":"1234567890.us-east-1.elb.amazonaws.com","secure":false,"port":"3000","query":{"EIO":4,"transport":"websocket"},"socket":{"secure":false,"hostname":"a44a5217784174659ad118687055fb73-878833166.us-east-1.elb.amazonaws.com","port":"3000","transports":["websocket"],"readyState":"opening","writeBuffer":[],"prevBufferLen":0,"opts":{"path":"/socket.io/","agent":false,"withCredentials":false,"upgrade":true,"timestampParam":"t","rememberUpgrade":false,"rejectUnauthorized":true,"perMessageDeflate":{"threshold":1024},"transportOptions":{},"closeOnBeforeunload":true,"reconnectionDelay":500,"transports":["websocket"],"hostname":"a44a5217784174659ad118687055fb73-878833166.us-east-1.elb.amazonaws.com","secure":false,"port":"3000"},"id":null,"upgrades":null,"pingInterval":null,"pingTimeout":null,"pingTimeoutTimer":null}}
2023-02-14T06:23:44.308Z engine.io-client:socket setting transport websocket
2023-02-14T06:23:44.308Z socket.io-client:manager connect attempt will timeout after 20000
2023-02-14T06:23:44.309Z socket.io-client:manager readyState opening
2023-02-14T06:23:44.876Z engine.io-client:socket socket receive: type "open", data "{"sid":"S-xI7LodLhVnyWeWAABv","upgrades":[],"pingInterval":25000,"pingTimeout":20000,"maxPayload":1000000}"
2023-02-14T06:23:44.876Z engine.io-client:socket socket open
2023-02-14T06:23:44.876Z socket.io-client:manager open
2023-02-14T06:23:44.876Z socket.io-client:manager cleanup
2023-02-14T06:23:44.876Z socket.io-client:socket transport is open - connecting
2023-02-14T06:23:44.877Z socket.io-client:manager writing packet {"type":0,"nsp":"/"}
2023-02-14T06:23:44.877Z socket.io-parser encoding packet {"type":0,"nsp":"/"}
2023-02-14T06:23:44.877Z socket.io-parser encoded {"type":0,"nsp":"/"} as 0
2023-02-14T06:23:44.877Z engine.io-client:socket flushing 1 packets in socket
2023-02-14T06:23:45.141Z engine.io-client:socket socket receive: type "message", data "4{"message":"No auth token"}"
2023-02-14T06:23:45.142Z socket.io-parser decoded 4{"message":"No auth token"} as {"type":4,"nsp":"/","data":{"message":"No auth token"}}
2023-02-14T06:23:45.143Z socket.io-client:manager disconnect
2023-02-14T06:23:45.143Z socket.io-client:manager closed due to forced close
2023-02-14T06:23:45.143Z socket.io-client:manager cleanup
2023-02-14T06:23:45.143Z engine.io-client:socket socket close with reason: "forced close"
2023-02-14T06:23:45.144Z engine.io-client:socket socket closing - telling transport to close

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