Third party clients need both the message and the
rexp.proto descriptor to read serialized R
objects. The latter is included in the the package
installation proto directory:
system.file(package="RProtoBuf",
"proto/rexp.proto") Currently, the following storage types are supported:
character, raw, double,
complex, integer, list, and
NULL. Objects with other storage types, such as
functions, environments, S4 classes, etc, will be skipped
with a warning. Missing values, attributes and numeric
precision will be preserved.