nearby: snapshot as of cl/296436629

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I2cf5bf225b76f4c1541954651f3a7544a14e0cec

cpp/core/internal/offline_frames.h

@@ -0,0 +1,70 @@
+#ifndef CORE_INTERNAL_OFFLINE_FRAMES_H_
+#define CORE_INTERNAL_OFFLINE_FRAMES_H_
+
+#include <cstdint>
+#include <vector>
+
+#include "proto/connections/offline_wire_formats.pb.h"
+#include "platform/byte_array.h"
+#include "platform/exception.h"
+#include "platform/port/string.h"
+#include "platform/ptr.h"
+#include "proto/connections_enums.pb.h"
+
+// Detects the right usage.
+#include "google/protobuf/message_lite.h"
+#define proto_ns google3_proto_compat
+
+
+namespace location {
+namespace nearby {
+namespace connections {
+
+class OfflineFrames {
+ public:
+  static ExceptionOr<ConstPtr<OfflineFrame> > fromBytes(
+      ConstPtr<ByteArray>
+          offline_frame_bytes);  // throws Exception::INVALID_PROTOCOL_BUFFER
+
+  static V1Frame::FrameType getFrameType(ConstPtr<OfflineFrame> offline_frame);
+
+  static ConstPtr<ByteArray> forConnectionRequest(
+      const std::string& endpoint_id, const std::string& endpoint_name,
+      std::int32_t nonce,
+      const std::vector<proto::connections::Medium>& mediums);
+  static ConstPtr<ByteArray> forConnectionResponse(std::int32_t status);
+
+  static ConstPtr<ByteArray> forDataPayloadTransferFrame(
+      const PayloadTransferFrame::PayloadHeader& header,
+      const PayloadTransferFrame::PayloadChunk& chunk);
+  static ConstPtr<ByteArray> forControlPayloadTransferFrame(
+      const PayloadTransferFrame::PayloadHeader& header,
+      const PayloadTransferFrame::ControlMessage& control);
+
+  static ConstPtr<ByteArray>
+  forWifiHotspotUpgradePathAvailableBandwidthUpgradeNegotiationEvent(
+      const std::string& ssid, const std::string& password, std::int32_t port);
+  static ConstPtr<ByteArray>
+  forLastWriteToPriorChannelBandwidthUpgradeNegotiationEvent();
+  static ConstPtr<ByteArray>
+  forSafeToClosePriorChannelBandwidthUpgradeNegotiationEvent();
+  static ConstPtr<ByteArray>
+  forClientIntroductionBandwidthUpgradeNegotiationEvent(
+      const std::string& endpoint_id);
+
+  static ConstPtr<ByteArray> forKeepAlive();
+
+  static ConnectionRequestFrame::Medium mediumToConnectionRequestMedium(
+      proto::connections::Medium medium);
+  static proto::connections::Medium connectionRequestMediumToMedium(
+      ConnectionRequestFrame::Medium medium);
+  static std::vector<proto::connections::Medium>
+  connectionRequestMediumsToMediums(
+      const ConnectionRequestFrame& connection_request_frame);
+};
+
+}  // namespace connections
+}  // namespace nearby
+}  // namespace location
+
+#endif  // CORE_INTERNAL_OFFLINE_FRAMES_H_