Function read_frame 

pub fn read_frame<R: Read>(reader: &mut R) -> Result<Vec<u8>, FramingError>

Read one v1 frame from reader with the default 16 MiB cap.

Equivalent to read_frame_with_cap(reader, MAX_FRAME_BYTES). Use read_frame_with_cap with MAX_HELLO_BYTES for the initial Hello envelope.

Errors

• FramingError::UnsupportedFramingVersion if the leading byte is not ENVELOPE_VERSION. The connection should be closed after writing Refused{ERROR_VERSION_UNSUPPORTED}.
• FramingError::FrameTooLarge if the body-length header exceeds the cap. The connection should be closed.
• FramingError::UnexpectedEof if the stream returned EOF before all expected bytes arrived.
• FramingError::Io for any other I/O error.