How to send message from server to client?

Question

go

Hello!
There is a listener (goroutine) that listens for a connection with a client
. It has this:

var buffer = make([]byte, 1024)

  for {
    bytesRead, err := conn.Read(buffer)
    if err != nil {
      conn.Close()
      return
    }
    var s = string(buffer[:bytesRead])
                //тут всякие действия в зависимости от приходящих значений
         }

Goroutine perfectly listens to incoming data and performs the necessary actions, and even writes what is needed in response to the socket,
but in this cycle, take it yourself and fire something to the client, bypassing waiting for data from it?
Or is it basically impossible?

When trying to write something to the socket out of queue, the script crashes with an error writing to a closed connection.

I would appreciate your help!

Answer 1

In order to send something, someone on the other side must receive. Judging by your mistake, the client closes the connection, and then nothing can be sent. We must first teach the client not to break the connection, but to continue to wait for new data, then the problem will disappear