Function WriteErrorResponse

server/wire/protocol.go:246–270

writeErrorResponse sends an error to the client

(w io.Writer, severity, code, message string)

}

// writeBackendKeyData sends the backend key data (for cancel requests)
func WriteBackendKeyData(w io.Writer, pid, secretKey int32) error {
	data := make([]byte, 8)
	binary.BigEndian.PutUint32(data[:4], uint32(pid))
	binary.BigEndian.PutUint32(data[4:], uint32(secretKey))
	return WriteMessage(w, MsgBackendKeyData, data)
}

// writeReadyForQuery indicates the server is ready for a new query
func WriteReadyForQuery(w io.Writer, txStatus byte) error {
	return WriteMessage(w, MsgReadyForQuery, []byte{txStatus})
}

// writeErrorResponse sends an error to the client
func WriteErrorResponse(w io.Writer, severity, code, message string) error {
	message = RedactSecrets(message)

	var data []byte

	// Severity
	data = append(data, 'S')
	data = append(data, []byte(severity)...)
	data = append(data, 0)

	// SQLSTATE code
	data = append(data, 'C')
	data = append(data, []byte(code)...)
	data = append(data, 0)