Implement HIDDevice.receiveFeatureReport

client/WebHID-for-Firefox.js

@@ -133,8 +133,8 @@
 								{
 									dev.oninputreport(evt);
 								}
-								break;
 							}
+							break;
 
 						case 1: // input report with reportId
 							{
@@ -149,6 +149,14 @@
 								}
 							}
 							break;
+
+						case 2: // feature report
+							{
+								const hash = view.getUint32(1);
+								const dev = hash_to_dev[hash];
+								dev._featureReportResolve(new DataView(event.data.slice(6)));
+							}
+							break;
 						}
 					}
 					else
@@ -225,7 +233,13 @@
 										msg.set(data, 6); // data
 										ws.send(msg);
 									};
-									dev.receiveFeatureReport = () => { console.log("TODO: HIDDevice.receiveFeatureReport"); };
+									dev.receiveFeatureReport = function(reportId)
+									{
+										console.assert(this.opened);
+
+										ws.send("rcfr" + this._hash);
+										return new Promise(resolve => this._featureReportResolve = resolve);
+									};
 
 									const collection = new HIDCollectionInfo();
 									collection.usage = parseInt(msg[6]);

server/main.cpp

@@ -420,6 +420,30 @@ SOEKVYljbu9o5nFbg1zU0Ck=
 					sub->unsubscribe();
 				}
 			}
+			else if (msg.data.substr(0, 4) == "rcfr")
+			{
+				uint32_t hid_hash = std::strtoul(msg.data.c_str() + 4, nullptr, 10);
+				for (auto& hid : hwHid::getAll())
+				{
+					if (hid_to_hash(hid) == hid_hash && hid_is_permitted(hid))
+					{
+						Buffer report;
+						try
+						{
+							hid.receiveFeatureReport(report);
+						}
+						catch (std::exception&)
+						{
+						}
+						BufferWriter bw;
+						uint8_t msgid = 2; bw.u8(msgid);
+						bw.u32_be(hid_hash);
+						bw.buf.append(report);
+						ServerWebService::wsSendBin(s, bw.buf.toString());
+						break;
+					}
+				}
+			}
 		}
 		else
 		{