MultipeerPeerLinkFactory
Parameters
displayName
Local display name surfaced to remote peers as the MCPeerID.displayName. Keep it short and recognisable (device name is the conventional choice).
serviceType
MultipeerConnectivity service-type string. Must be 1–15 ASCII letters, digits, or hyphens (same rules as Bonjour _service._tcp. minus underscores). Callers supply their own value; kuilt does not provide a default.