Struct MappedAddress

pub struct MappedAddress;

The MAPPED-ADDRESS attribute indicates a reflexive transport address of the client. It consists of an 8-bit address family and a 16-bit port, followed by a fixed-length value representing the IP address. If the address family is IPv4, the address MUST be 32 bits. If the address family is IPv6, the address MUST be 128 bits. All fields must be in network byte order.

The format of the MAPPED-ADDRESS attribute is:

  0                   1                   2                   3
  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |0 0 0 0 0 0 0 0|    Family     |           Port                |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 |                                                               |
 |                 Address (32 bits or 128 bits)                 |
 |                                                               |
 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

The address family can take on the following values:

0x01:IPv4 0x02:IPv6

The first 8 bits of the MAPPED-ADDRESS MUST be set to 0 and MUST be ignored by receivers. These bits are present for aligning parameters on natural 32-bit boundaries.

This attribute is used only by servers for achieving backwards compatibility with RFC3489 clients.

Trait Implementations

impl<'a> Property<'a> for MappedAddress

type Error = StunError

type Inner = SocketAddr

current attribute inner type.

fn kind() -> AttrKind

get current attribute type.

fn into(value: Self::Inner, buf: &mut BytesMut, token: &[u8])

write the current attribute to the buffer.

fn try_from(buf: &'a [u8], token: &'a [u8]) -> Result<Self::Inner, Self::Error>

convert buffer to current attribute.