diff --git a/IMPLEMENTATION.md b/IMPLEMENTATION.md
index f751bb9..9e16bc9 100644
--- a/IMPLEMENTATION.md
+++ b/IMPLEMENTATION.md
@@ -43,16 +43,38 @@ Cast SDK API calls are translated into Chromecast protocol messages and sent via
-| No. | Subject | Origin | Destination | Description |
-| --- | --- | --- | --- | --- |
-| 1 | `shim:/initialized` | background | shim | Sent after bridge has been created. |
-| 2 | `bridge:/discover` | shim | bridge | Starts network discovery. |
-| 3 | `shim:/serviceUp` | bridge | shim | Sent when a receiver device has been found. |
-| 4 | `shim:/serviceDown` | bridge | shim | Sent when a receiver device has been lost. |
-| 5 | `main:/openPopup` | shim | background | Opens the receiver selection popup. |
-| 6 | `popup:/assignShim` | background | popup | Provides popup with tab/frame ID for the opener shim so that it can make a direct connection. |
-| 7 | `shim:/popupReady` | popup | shim | Sent after popup is ready to receive data. |
-| 8 | `popup:/populateReceiverList` | shim | popup | Supplies popup with current `state.receiverList`. |
-| 9 | `shim:/selectReceiver` | popup | shim | Sent once a receiver has been selected. |
-| 9 | `popup:/close` | popup | shim | Sent once a receiver has been selected. |
+| No. | Subject | Origin | Destination | Description |
+| --: | --------------------------------------------- | ---------- | ----------- | ----------- |
+| 1 | `shim:/initialized` | background | shim | Sent once bridge has been created. |
+| 2 | `bridge:/startDiscovery` | shim | bridge | Starts network discovery. |
+| 3 | `shim:/serviceUp` | bridge | shim | Sent once a receiver device has been found. |
+| 4 | `shim:/serviceDown` | bridge | shim | Sent once a receiver device has been lost. |
+| 5 | `main:/openPopup` | shim | background | Opens the receiver selection popup. |
+| 6 | `popup:/assignShim` | background | popup | Provides popup with tab/frame ID for the opener shim so that it can make a direct connection. |
+| 7 | `shim:/popupReady` | popup | shim | Sent once popup is ready to receive data. |
+| 8 | `popup:/populateReceiverList` | shim | popup | Provides popup with current `state.receiverList`. |
+| 9 | `shim:/selectReceiver` | popup | shim | Sent once a receiver has been selected. |
+| 10 | `popup:/close` | shim | popup | Closes popup. |
+| 11 | `bridge:/session/initialize` | shim | bridge | Initializes cast session with receiver device. |
+| 12 | `bridge:/session/close` | shim | bridge | Closes cast session. |
+| 13 | `shim:/session/connected` | bridge | shim | Sent once cast session has connected. |
+| 14 | `shim:/session/updateStatus` | bridge | shim | Provides shim session with status updates. |
+| 15 | `bridge:/session/impl_addMessageListener` | shim | bridge | Sends data to bridge for implementation of `Session#addMessageListener` method. |
+| 16 | `bridge:/session/impl_sendMessage` | shim | bridge | Sends data to bridge for implementation of `Session#sendMessage` method. |
+| 17 | `bridge:/session/impl_setReceiverMuted` | shim | bridge | Sends data to bridge for implementation of `Session#setReceiverMuted` method. |
+| 18 | `bridge:/session/impl_setReceiverVolumeLevel` | shim | bridge | Sends data to bridge for implementation of `Session#setReceiverVolumeLevel` method. |
+| 19 | `bridge:/session/impl_stop` | shim | bridge | Sends data to bridge for implementation of `Session#stop` method. |
+| 20 | `bridge:/media/initialize` | shim | bridge | Initializes bridge media message handler. |
+| 21 | `bridge:/media/sendMediaMessage` | shim | bridge | Sends media message to receiver device. |
+| 22 | `shim:/session/impl_addMessageListener` | shim | popup | Response from bridge->shim counterpart message. |
+| 23 | `shim:/session/impl_sendMessage` | shim | popup | Response from bridge->shim counterpart message. |
+| 24 | `shim:/session/impl_setReceiverMuted` | shim | popup | Response from bridge->shim counterpart message. |
+| 25 | `shim:/session/impl_setReceiverVolumeLevel` | shim | popup | Response from bridge->shim counterpart message. |
+| 26 | `shim:/session/impl_stop` | shim | popup | Response from bridge->shim counterpart message. |
+| 27 | `shim:/media/sendMediaMessageResponse` | shim | popup | Response from `sendMediaMessage`. Contains error status. |
+| 28 | `shim:/media/update` | shim | popup | Provides shim media with status updates. |
+| 29 | `bridge:/startHttpServer` | mediaCast | bridge | Starts HTTP server for serving local media to receiver device. |
+| 30 | `bridge:/stopHttpServer` | mediaCast | bridge | Stops HTTP server. |
+| 31 | `mediaCast:/httpServerStarted` | bridge | mediaCast | Sent once HTTP server has started. |
+| 32 | `updater:/updateData` | options | updater | Sends initialization data to updater popup. |
diff --git a/diagram.svg b/diagram.svg
index 98ce2b7..ff370ab 100644
--- a/diagram.svg
+++ b/diagram.svg
@@ -1 +1 @@
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