node-simconnect

A SimConnect client library for Node.JS, written in TypeScript. Integrates directly with the SimConnect protocol and runs on Windows, Linux and Mac.

Credits

This project is a rewrite of the Java client library jsimconnect, originally written by lc0277. Details about the protocol can be found on lc0277's old website.

Instructions

Please refer to the /samples folder for help.

The API works similar to the SimConnect API described in the official documentation.

Quick start

import { open, Protocol } from 'node-simconnect';

const EVENT_ID_PAUSE = 1;

open('My SimConnect client', Protocol.FSX_SP2)
    .then(function ({ recvOpen, handle }) {
        // recvOpen: object containing simulator information
        // handle: the SimConnect handle
        console.log('Connected to', recvOpen.applicationName);
        handle.subscribeToSystemEvent(EVENT_ID_PAUSE, 'Pause');
        handle.on('event', function (recvEvent) {
            switch (recvEvent.clientEventId) {
                case EVENT_ID_PAUSE:
                    console.log(recvEvent.data === 1 ? 'Sim paused' : 'Sim unpaused');
                    break;
            }
        });
        handle.on('quit', function () {
            console.log('Simulator quit');
        });
        handle.on('close', function () {
            console.log('Connection closed unexpectedly (simulator CTD?)');
        });
    })
    .catch(function (error) {
        console.log('Connection failed:', error);
    });

Running over network?

1. Open SimConnect.xml.

   • FSX: X:\Users\<USER>\AppData\Roaming\Microsoft\FSX
   • MSFS: X:\Users\<USER>\AppData\Local\Packages\Microsoft.FlightSimulator_**********\LocalCache.

2. Set property <Address>0.0.0.0</Address>. Example of a working SimConnect.xml file:

   <?xml version="1.0" encoding="Windows-1252"?>
   <SimBase.Document Type="SimConnect" version="1,0">
       <Filename>SimConnect.xml</Filename>
       <SimConnect.Comm>
           <Protocol>IPv4</Protocol>
           <Scope>local</Scope>
           <Port>5111</Port>
           <MaxClients>64</MaxClients>
           <MaxRecvSize>41088</MaxRecvSize>
           <Address>0.0.0.0</Address>
       </SimConnect.Comm>
   </SimBase.Document>

3. Provide the IP address of the simulator PC and the port number when calling open:

   const options = { remote: { host: 'localhost', port: 5111 } };
   
   open('My SimConnect client', Protocol.FSX_SP2, options).then(/* ... */).catch(/* try again? */);

If no connection options are specified, node-simconnect will auto-discover connection details in the following order:

1. Look for a SimConnect.cfg in the folder where Node.js is located. If the script is running in Electron, this will be the folder where the Electron executable is installed.
2. Look for a SimConnect.cfg in the user's home directory (%USERPROFILE%, eg. C:\Users\<username>)
3. Look for a named pipe in the Windows registry, automatically set by the simulator
4. Look for a port number in the Windows registry, automatically set by the simulator. node-simconnect will then connect to localhost:<port>.

Functionality

Most of the APIs described in the official SimConnect documentation are implemented in node-simconnect. For information on how each feature works, please refer to the official documentation.

Several new features have been added to the SimConnect API after the new Microsoft Flight Simulator was released, and more features are likely to come. Most of these will only be implemented on request. If you are missing any features in node-simconnect feel free to open a new issue or create a pull request.

Prepar3D support and Prepar3D-only-features will not be prioritized.

⚠️ = deprecated and will not work, according to the official documentation.

Events and data

Method	Tested FSX	Tested P3D	Tested MSFS
addClientEventToNotificationGroup
addToClientDataDefinition
addToDataDefinition	✅
clearClientDataDefinition
clearDataDefinition	✅
clearInputGroup
clearNotificationGroup
createClientData
mapClientDataNameToID
mapClientEventToSimEvent
mapInputEventToClientEvent
removeClientEvent
removeInputEvent
requestClientData
requestDataOnSimObject	✅
requestDataOnSimObjectType	✅
requestNotificationGroup
requestReservedKey
subscribeToSystemEvent	✅
setClientData
setDataOnSimObject	✅
setInputGroupPriority
setInputGroupState
setSystemEventState
setSystemState
unsubscribeFromSystemEvent	✅

AI Objects

Method	Tested FSX	Tested P3D	Tested MSFS
aICreateParkedATCAircraft
aICreateEnrouteATCAircraft
aICreateNonATCAircraft
aICreateSimulatedObject
aIReleaseControl
aIRemoveObject
aISetAircraftFlightPlan

Flights

Method	Tested FSX	Tested P3D	Tested MSFS
flightLoad
flightPlanLoad
flightSave

Facility

Method	Tested FSX	Tested P3D	Tested MSFS
addToFacilityDefinition	n/a	n/a	✅
requestFacilitiesList
requestFacilitiesListEx1	n/a	n/a	✅
requestFacilityData	n/a	n/a	✅
requestFacilityDataEx1	n/a	n/a	✅
subscribeToFacilities	✅
subscribeToFacilitiesEx1	n/a	n/a	✅
unSubscribeToFacilities	✅
unSubscribeToFacilitiesEx1	n/a	n/a	✅

Menu

Method	Tested FSX	Tested P3D	Tested MSFS
menu	✅		⚠️
menuAddItem			⚠️
menuAddSubItem			⚠️
menuDeleteItem			⚠️
menuDeleteSubItem			⚠️

Weather

Method	Tested FSX	Tested P3D	Tested MSFS
weatherRequestObservationAtNearestStation	✅		⚠️
weatherRequestCloudState	✅		⚠️
weatherRequestInterpolatedObservation			⚠️
weatherRequestObservationAtStation			⚠️
weatherCreateStation			⚠️
weatherSetObservation			⚠️
weatherSetModeServer			⚠️
weatherSetModeTheme			⚠️
weatherSetModeGlobal			⚠️
weatherSetModeCustom			⚠️
weatherSetDynamicUpdateRate			⚠️
weatherCreateThermal			⚠️
weatherRemoveThermal			⚠️

Misc

Method	Tested FSX	Tested P3D	Tested MSFS
cameraSetRelative6DOF
completeCustomMissionAction
executeMissionAction
requestSystemState	✅
setNotificationGroupPriority
text	✅		⚠️