// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

library fuchsia.overnet.protocol;

using zx;

/// A single message proxied from a Zircon channel over an Overnet stream.
struct ZirconChannelMessage {
    /// Bytes part of the payload.
    vector<uint8>:zx.CHANNEL_MAX_MSG_BYTES bytes;
    /// Handles part of the payload.
    vector<ZirconHandle>:zx.CHANNEL_MAX_MSG_HANDLES handles;
};

/// A single handle to be proxied.
/// Not all Zircon types are supported.
strict xunion ZirconHandle {
    /// A proxied channel.
    ChannelHandle channel;
    /// A proxied socket.
    SocketHandle socket;
};

/// A proxied channel.
struct ChannelHandle {
    /// The Overnet proxy stream that was created to carry this channel.
    /// The protocol over said stream will be a `ZirconChannel`.
    StreamId stream_id;
};

/// A proxied socket.
struct SocketHandle {
    /// The Overnet proxy stream that was created to carry this socket.
    /// The protocol over said stream will be a `ZirconSocket`.
    StreamId stream_id;
    /// Socket options, per `zx_socket_create`.
    uint32 options;
};