Handle subscription of messages in the webapp.
Messages larger than a threshold are split and reassembled due to the
size limit in webrtc. Threshold may have to be adjusted somewhere between
64KiB and 256KiB.
This also includes a basic handler for a ping message and a more
advanced image handler.
Change-Id: If66acfb1bb84e9d3ff686994a94b1480cb70b2aa
diff --git a/aos/network/web_proxy_utils.h b/aos/network/web_proxy_utils.h
new file mode 100644
index 0000000..0672ddc
--- /dev/null
+++ b/aos/network/web_proxy_utils.h
@@ -0,0 +1,20 @@
+#include "aos/network/web_proxy_generated.h"
+#include "aos/events/event_loop.h"
+
+namespace aos {
+namespace web_proxy {
+
+int GetPacketCount(const Context &context);
+
+/*
+ * Packs a message embedded in context into a MessageHeader on fbb. Handles
+ * multipart messages by use of the packet_index.
+ * TODO(alex): make this an iterator that returns each packet sequentially
+ */
+flatbuffers::Offset<MessageHeader> PackMessage(
+ flatbuffers::FlatBufferBuilder *fbb, const Context &context,
+ int channel_index, int packet_index);
+
+
+} // namespace web_proxy
+} // namespace aos