Interface ReadRangeOrBuilder (2.48.1)

Required. Read identifier provided by the client. When the client issues more than one outstanding ReadRange on the same stream, responses can be mapped back to their corresponding requests using this value. Clients must ensure that all outstanding requests have different read_id values. The server may close the stream with an error if this condition is not met.

int64 read_id = 3 [(.google.api.field_behavior) = REQUIRED];

Optional. The maximum number of data bytes the server is allowed to return across all response messages with the same read_id. A read_length of zero indicates to read until the resource end, and a negative read_length will cause an error. If the stream returns fewer bytes than allowed by the read_length and no error occurred, the stream includes all data from the read_offset to the resource end.

int64 read_length = 2 [(.google.api.field_behavior) = OPTIONAL];

Required. The offset for the first byte to return in the read, relative to the start of the object.

A negative read_offset value will be interpreted as the number of bytes back from the end of the object to be returned. For example, if an object's length is 15 bytes, a ReadObjectRequest with read_offset = -5 and read_length = 3 would return bytes 10 through 12 of the object. Requesting a negative offset with magnitude larger than the size of the object will return the entire object. A read_offset larger than the size of the object will result in an OutOfRange error.

int64 read_offset = 1 [(.google.api.field_behavior) = REQUIRED];