Module relay 

This module implements the send/recv relaying protocol.

Protocol flow:

• server occasionally sends FrameType::Ping
• client responds to any FrameType::Ping with a FrameType::Pong
• clients sends FrameType::ClientToRelayDatagram or FrameType::ClientToRelayDatagramBatch
• server then sends FrameType::RelayToClientDatagram or FrameType::RelayToClientDatagramBatch to recipient
• server sends FrameType::EndpointGone when the other client disconnects

Structs

Datagrams

One or multiple datagrams being transferred via the relay.

Enums

ClientToRelayMsg

Messages that clients send to relays.

Error

Protocol send errors.

RelayToClientMsg

The messages that a relay sends to clients or the clients receive from the relay.

Constants

MAX_PACKET_SIZE

The maximum size of a packet sent over relay. (This only includes the data bytes visible to the socket, not including its on-wire framing overhead)