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// Copyright 2022 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
package dev.pigweed.pw_transfer;
public enum ProtocolVersion {
// Protocol version not known or not set.
UNKNOWN,
// The original transfer protocol, prior to transfer start/end handshakes.
LEGACY,
// Second version of the transfer protocol. Guarantees type fields on all
// chunks, deprecates pending_bytes in favor of window_end_offset, splits
// transfer resource IDs from ephemeral session IDs, and adds a handshake
// to the start and end of all transfer sessions.
VERSION_TWO;
/** Returns to the most up-to-date version of the transfer protocol. */
public static ProtocolVersion latest() {
return VERSION_TWO;
}
}