const crypto/tls.extensionCookie

5 uses

	crypto/tls (current package)
		common.go#L118: 	extensionCookie                  uint16 = 44
		handshake_messages.go#L221: 		exts.AddUint16(extensionCookie)
		handshake_messages.go#L551: 		case extensionCookie:
		handshake_messages.go#L724: 		exts.AddUint16(extensionCookie)
		handshake_messages.go#L849: 		case extensionCookie: