Currently, the program will crash if required files are missing. This includes DLLs and server_location.txt.

There should be exception handling so that the program displays a more friendly error message, instead of a stack trace (as is the case currently).

Add an option to forward all frequency messages, even those that don't begin with the user's callsign.

This would be useful mostly for controllers.

Whenever FcomClient crashes, the stack trace (i.e. fatal errors) should be saved to log.txt for easier debugging.

The current command-line interface is straightforward and works, but isn't exactly the most user-friendly.

Create a graphical user interface (GUI) for the program. This will require some refactoring, as the existing code is coupled rather tightly to the command-line interface.

It would be appreciated, if you can send the UI to the tray.

Frequency messages beginning with a callsign that's similar at the beginning (e.g. UAL123 when the user is logged in as UAL1) also get forwarded to the FCOM server.

Frequency messages over a frequency the user isn't tuned to also get forwarded.

Seems like the FSD server will broadcast frequency messages to all logged-in users within a certain radius.

It seems that outgoing messages are detected and not forwarded (as intended), but incoming messages aren't even detected.

Sometimes, when a controller sends a message over their frequency, their messages are addressed to multiple frequencies. In particular, it seems that the message is transmitted over both the controller's primary frequency and their ATIS frequency.

Example:

• A controller has the frequency 118.100, and an ATIS frequency of 132.850
• Messages will appear to be addressed to @18100&@32850
• e.g. #TMXXX_TWR:@18100&@32850:Insert message here

From the data currently available, it seems that this does not occur with CTR controllers. However, the above-mentioned issue may simply not have surfaced yet, due to FCOM users mainly receiving text messages while far away from the airport the ATIS is associated with.

Provide some sort of feedback in the GUI if a forwarded message uses a Discord code not associated with any user (e.g. it expired, or the user removed it via the remove bot command), so that the user knows that the code being used has expired.

The API returns a HTTP 400 error if the Discord code isn't registered to any user, so that can be used by the client to detect such an error.

The client is forwarding messages received over frequencies that the user isn't tuned into.

2023-06-08 04:20:58Z: [CRASH] SharpPcap.PcapException: Unable to open the adapter (rpcap://\Device\NPF_{9F062D47-930C-4BC3-9361-74F82F25D344}). Error opening adapter: 文件名、目录名或卷标语法不正确（this is a error message in Chinese system, Google translate: Incorrect filename, directory name, or volume label syntax）。  (123)
   SharpPcap.LibPcap.LibPcapLiveDevice.Open(DeviceMode mode, Int32 read_timeout, MonitorMode monitor_mode)
   SharpPcap.LibPcap.LibPcapLiveDevice.Open(DeviceMode mode, Int32 read_timeout)
   FcomClient.UI.FcomClient.Main(String[] args)

I confirm that I have installed winpcap, and I am using the newest FCOM client

Under unknown circumstances, FcomClient will try to read from C:\Windows\System32, instead of the current directory the executable is located in.

Re-downloading all files seems to fix the problem.

The following cases have been observed:

1. server_location.txt, without admin privileges
   • Results in System.IO.FileNotFoundException
2. log.txt, with admin privileges
   • Results in System.UnauthorizedAccessException

Screenshots of the above:

1. https://cdn.discordapp.com/attachments/502296319340314634/554571734137831424/2019-03-11_18-49-50.png
2. https://cdn.discordapp.com/attachments/502296319340314634/554572043778129940/2019-03-11_18-51-07.png

Aircraft config packets ($CQ, @N, @S etc.) also get forwarded by the client.

Examples (as seen inside Discord):

AAL123:
Here's a test message
$CQLAN2250:@94836:ACC:{"config":{"lights":{"strobe_on":true}}

LON_CTR:
Insert message here
@ N:EZY123:2000:1:47.81881:9.46934:33358:439:4257229744:-172