Method retryReadRecord

conn.go:829–839

retryReadRecord recurs into readRecordOrCCS to drop a non-advancing record, like a warning alert, empty application_data, or a change_cipher_spec in TLS 1.3.

(expectChangeCipherSpec bool)

// retryReadRecord recurs into readRecordOrCCS to drop a non-advancing record, like
// a warning alert, empty application_data, or a change_cipher_spec in TLS 1.3.
func (c *Conn) retryReadRecord(expectChangeCipherSpec bool) error {
	c.retryCount++
	if c.MaxUselessRecords <= 0 {
		c.MaxUselessRecords = maxUselessRecords
	}
	if c.retryCount > c.MaxUselessRecords {
		c.sendAlert(alertUnexpectedMessage)
		return c.in.setErrorLocked(errors.New("tls: too many ignored records"))
	}
	return c.readRecordOrCCS(expectChangeCipherSpec)
}

// atLeastReader reads from R, stopping with EOF once at least N bytes have been
// read. It is different from an io.LimitedReader in that it doesn't cut short