Types
This message is sent to let the other site know that we have some events at our disposable for a certain site. When an exchange is started, the Incoming site will send some Advertisement for all the sites it knows about, before sending a Ready message.
Sends multiple events, alongside their body, to the Outgoing side. When sending an event, you guarantee that you'll never send any Event for the same SiteIdentifier and with a smaller SequenceNumber.
This message is sent once the sender is done advertising all of its initial sites. This does not mean that additional Advertisement messages will not be sent later, but instead provides a "best-effort guarantee" that the site has issued advertisements for all the messages it was aware of when the Link was established.