We have implemented socket io server side implementation using netty socket io in existing java spring boot application. We are able to connect socket io by using localhost:8788 from postman. And in postman we can observe the url like below

localhost:8788/socket.io/

But we have to change the default context path i.e /socket.io to /msgsvc and we need url like below

localhost:8788/msgsvc

For that we tried below

config.setContext("/msgsvc");

We run the application and socket io server also started. But when we trigger from postman with the below url, unable to establish the connection and getting 400 error localhost:8788/msgsvc