Define Stable API for WebRTC/Quartc

net/quic/quartc/quartc_reliable_stream_interface.h

+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef NET_QUIC_QUARTC_QUARTC_RELIABLE_STREAM_INTERFACE_H_
+#define NET_QUIC_QUARTC_QUARTC_RELIABLE_STREAM_INTERFACE_H_
+
+namespace net {
+class QuartcReliableStreamInterface {
+ public:
+  virtual uint32_t stream_id() = 0;
+  virtual uint64_t buffered_amount() = 0;
+
+  // For forward-compatibility
+  struct WriteParameters {
+    bool fin = false;
+  };
+  virtual void Write(const char* data,
+                     size_t size,
+                     const WriteParameters& param) = 0;
+  virtual void Close() = 0;
+
+  // Implemented on the WebRTC side.
+  class Observer {
+   public:
+    // Called when the data are ready.
+    virtual void OnReceived(QuartcReliableStreamInterface* stream,
+                            const char* data,
+                            size_t size) = 0;
+
+    // TODO(zhihuang) Create a map from the integer error_code to WebRTC native
+    // error code.
+    virtual void OnClose(QuartcReliableStreamInterface* stream,
+                         int error_code) = 0;
+
+    // Called when the buffered data has been sent.
+    virtual void OnBufferedAmountChanged(
+        QuartcReliableStreamInterface* stream) = 0;
+  };
+  virtual void SetObserver(Observer*) = 0;
+};
+}
+
+#endif  // NET_QUIC_QUARTC_QUARTC_RELIABLE_STREAM_INTERFACE_H_