Donot worry about hosting a socket. You can use this tool to emit socket event in a instant.
In postman, select POST method and use url: https://socket.admondtamang.com.np/api/emit, And in body, choose raw and select json: you should mention key and payload as below
{
"key":"your_key",
"payload":"{color:'red'}"
}
Example:
Note : key and payload is compulsory
In postman, click new and select socket.io, inser url: https://socket.admondtamang.com.np event_name: your_key and switch on the listen toggle
Example: