IpAddr models both IPv4 and IPv6 numeric addresses as well as provide DNS hostname resolution.

Network interface which models name and IP addresses assigned

MulticastSocket extends UdpSocket to provide multicast capabilities.

Configuration options for TCP and UDP sockets.

SocketOptions groups together all the socket options used to tune a TcpSocket, TcpListener, or UdpSocket.

TcpListener is a server socket that listens to a local well known port for incoming TcpSockets.

TcpSocket manages a TCP/IP endpoint.

UdpPacket encapsulates an IpAddr, port, and payload of bytes to send or receive from a UdpSocket.

UdpSocket manages a UDP/IP datagram endpoint.

UnknownHostErr indicates a failure to resolve a hostname to an IP address.