# Protocol Documentation <a name="top"></a> ## Table of Contents - [refs/types.proto](#refs/types.proto) - Messages - [Address](#refs.Address) - [Scalar Value Types](#scalar-value-types) <a name="refs/types.proto"></a> <p align="right"><a href="#top">Top</a></p> ## refs/types.proto <!-- end services --> <a name="refs.Address"></a> ### Message Address Address of object (container id + object id) | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | ObjectID | [bytes](#bytes) | | ObjectID is an object identifier, valid UUIDv4 represented in bytes | | CID | [bytes](#bytes) | | CID is container identifier | <!-- end messages --> <!-- end enums --> ## Scalar Value Types | .proto Type | Notes | C++ Type | Java Type | Python Type | | ----------- | ----- | -------- | --------- | ----------- | | <a name="double" /> double | | double | double | float | | <a name="float" /> float | | float | float | float | | <a name="int32" /> int32 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint32 instead. | int32 | int | int | | <a name="int64" /> int64 | Uses variable-length encoding. Inefficient for encoding negative numbers – if your field is likely to have negative values, use sint64 instead. | int64 | long | int/long | | <a name="uint32" /> uint32 | Uses variable-length encoding. | uint32 | int | int/long | | <a name="uint64" /> uint64 | Uses variable-length encoding. | uint64 | long | int/long | | <a name="sint32" /> sint32 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int32s. | int32 | int | int | | <a name="sint64" /> sint64 | Uses variable-length encoding. Signed int value. These more efficiently encode negative numbers than regular int64s. | int64 | long | int/long | | <a name="fixed32" /> fixed32 | Always four bytes. More efficient than uint32 if values are often greater than 2^28. | uint32 | int | int | | <a name="fixed64" /> fixed64 | Always eight bytes. More efficient than uint64 if values are often greater than 2^56. | uint64 | long | int/long | | <a name="sfixed32" /> sfixed32 | Always four bytes. | int32 | int | int | | <a name="sfixed64" /> sfixed64 | Always eight bytes. | int64 | long | int/long | | <a name="bool" /> bool | | bool | boolean | boolean | | <a name="string" /> string | A string must always contain UTF-8 encoded or 7-bit ASCII text. | string | String | str/unicode | | <a name="bytes" /> bytes | May contain any arbitrary sequence of bytes. | string | ByteString | str |