kubernetes/vendor/google.golang.org/grpc/peer/peer.go

type Peer …

// String ensures the Peer types implements the Stringer interface in order to
// allow to print a context with a peerKey value effectively.
func (p *Peer) String() string { … }

type peerKey …

// NewContext creates a new context with peer information attached.
func NewContext(ctx context.Context, p *Peer) context.Context { … }

// FromContext returns the peer information in ctx if it exists.
func FromContext(ctx context.Context) (p *Peer, ok bool) { … }