Function rmp::decode::read_str_len

pub fn read_str_len<R: RmpRead>(
    rd: &mut R
) -> Result<u32, ValueReadError<R::Error>>

Attempts to read up to 9 bytes from the given reader and to decode them as a string u32 size value.

According to the MessagePack specification, the string format family stores an byte array in 1, 2, 3, or 5 bytes of extra bytes in addition to the size of the byte array.

Errors

This function will return ValueReadError on any I/O error while reading either the marker or the data.

It also returns ValueReadError::TypeMismatch if the actual type is not equal with the expected one, indicating you with the actual type.