src/devices/tests/fidl-service/echo.test.fidl

// Copyright 2022 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 fidl.examples.echo;

const MAX_STRING_LENGTH uint64 = 32;

@discoverable
closed protocol Echo {
    /// Returns the input.
    strict EchoString(struct {
        value string:<MAX_STRING_LENGTH, optional>;
    }) -> (struct {
        response string:<MAX_STRING_LENGTH, optional>;
    });
};

@discoverable
@transport("Driver")
closed protocol DriverEcho {
    /// Returns the input.
    strict EchoString(struct {
        value string:<MAX_STRING_LENGTH, optional>;
    }) -> (struct {
        response string:<MAX_STRING_LENGTH, optional>;
    });
};

service EchoService {
    echo client_end:Echo;
};

service EchoService2 {
    echo client_end:Echo;
};

service DriverEchoService {
    echo client_end:DriverEcho;
};