Function clientErrorHandler

test/reply-error.test.js:149–154

(err, socket)

  const response = `HTTP/1.1 400 Bad Request\r\nContent-Length: ${responseBody.length}\r\nContent-Type: application/json; charset=utf-8\r\n\r\n${responseBody}`

  function clientErrorHandler (err, socket) {
    t.assert.ok(err instanceof Error)

    this.log.warn({ err }, 'Handled client error')
    socket.end(response)
  }

  const logStream = split(JSON.parse)
  const fastify = Fastify({