UDP issue connecting dragonlink receiver to MP

Ground Control Software Mission Planner
1

Hello I am trying to connect my dragonlink receiver to mission planner (windows 11) TCP works but UDP on port 14550 does not. The error I am getting is below. Thanks in advance for your help any suggestions?

This is the error
Only one usage of each socket address (protocol/network address/port) is normally permitted

at System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.Bind(EndPoint localEP)
at MissionPlanner.Comms.UdpSerial.Open() in D:\a\MissionPlanner\MissionPlanner\ExtLibs\Comms\CommsUdpSerial.cs:line 130
at MissionPlanner.MAVLinkInterface.OpenBg(IProgressReporterDialogue PRsender, Boolean getparams) in D:\a\MissionPlanner\MissionPlanner\ExtLibs\ArduPilot\Mavlink\MAVLinkInterface.cs:line 888
at MissionPlanner.Controls.ProgressReporterDialogue.RunBackgroundOperation(Object o) in D:\a\MissionPlanner\MissionPlanner\ExtLibs\Controls\ProgressReporterDialogue.cs:line 111

2

MP by default listerns on 14550 at startup, and will autoconnect once it gets a packet on that port.

if autoconnect is disabled, and you still get this error, then something else on the system is likerly the cause

3

Michael, thanks for getting back to me. I’m sorry if it’s obvious but how do I disable auto connect? Thank you Jeff.

4

so the instructions are here for that one

now the catch here is, if the remote device was already sending packets it would already be working via the auto connect, so I’m not sure if this will actually fix your issue.

5

Michael, having trouble locating the confi.xml file I have searched for it using windows explorer. I am using windows 11, current beta Mission Planner

thanks Jeff

6

Michael can you direct me to the xml file. This computer is new it’s nothing really installed but mission planner. I don’t see anything using 14550
Could something be blocking it?

7

Documents/Mission Planner folder

use netstat -bano command from an admin command line prompt.

8

Ok. In the second window of mission planner. Terminal.

port 14550 is opening now. See pic. Am I correct in this? Thanks Jeff

https://www.dropbox.com/scl/fi/0aru1ih4gbmtfof3q1jp8/Photo-Sep-23-2024-12-48-39-PM.jpg?rlkey=ayrj4z57qq1tuilbllpepjsbs&dl=0

9

The port is open now, quick question, could using an older firmware cause issues with the current mission planner, thanks Jeff