garnet/examples/tcp/tcp_file_sender/meta/tcp_file_sender.cmx

{
    "program": {
        "binary": "bin/tcp_file_sender"
    },
    "sandbox": {
        "services": [
            "fuchsia.logger.LogSink",
            "fuchsia.net.NameLookup",
            "fuchsia.posix.socket.Provider",
            "fuchsia.net.SocketProvider"
        ]
    }
}