Troubleshooting Raspberry Pi Connect Issues: A Comprehensive Guide

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Troubleshooting Raspberry Pi Connect Issues: A Comprehensive Guide

Raspberry Pi Connect simplifies communication between devices without typically requiring network or firewall adjustments. However, restrictive networks can hinder its functionality. To resolve such issues, the rpi-connect doctor command offers diagnostic tools, enabling you to test network connectivity and troubleshoot problems effectively.

This guide will walk you through diagnosing and resolving connectivity issues, viewing service status, enabling enhanced logging, and accessing service logs.


Diagnosing Network Issues

To identify network-related issues, use the rpi-connect doctor command:


$ rpi-connect doctor


If your network supports Connect communication, the output should display successful test cases with checkmarks:


✓ Communication with Raspberry Pi Connect API
✓ Authentication with Raspberry Pi Connect API
✓ Peer-to-peer connection candidate via STUN
✓ Peer-to-peer connection candidate via TURN


If any test fails, indicated by an "x," your network administrator must enable specific connections. Ensure the following are permitted:

  • HTTPS Requests:

    • Unauthenticated and authenticated requests on port 443 to api.connect.raspberrypi.com

  • STUN/TURN Servers:

    • UDP port 3478 to:
      • stun.raspberrypi.com
      • turn1.raspberrypi.com
      • turn2.raspberrypi.com
      • turn3.raspberrypi.com

  • TURN Servers (TCP):

    • TCP ports 3478 and 443 to:
      • turn1.raspberrypi.com
      • turn2.raspberrypi.com
      • turn3.raspberrypi.com

  • TURN Servers (UDP High Ports):

    • UDP ports 49152–65535 to:
      • turn1.raspberrypi.com
      • turn2.raspberrypi.com
      • turn3.raspberrypi.com


Viewing Connect Service Status

To verify the status of Raspberry Pi Connect, run the rpi-connect status command:


$ rpi-connect status


The output indicates whether you're signed in and the status of remote services:


Signed in: yes
Screen sharing: allowed (0 sessions active)
Remote shell: allowed (0 sessions active)


If you see that the Raspberry Pi Connect service is not running, use the rpi-connect command to turn it on, then check the connect status again.


Raspberry Pi Connect is not running
$ rpi-connect on
$ rpi-connect status


Enabling Enhanced Logging

For situations where network issues persist or configurations behave unpredictably, enhanced logging provides a detailed view of local operations. This is especially useful for diagnosing recurring connectivity problems, debugging intricate network setups, or identifying misconfigurations that aren't immediately obvious.


Enhanced Logging for rpi-connect

1.  Override the service definition:

$ systemctl --user edit rpi-connect


2.  Add these lines between the comments,  Ensure both ExecStart= lines are included.

[Service]
ExecStart=
ExecStart=/usr/bin/rpi-connectd \
    -socket %t/rpi-connect-wayvnc.sock \
    -v


3.  Restart the service:

$ rpi-connect restart



Enhanced Logging for WayVNC Server

1.  Override the service definition:

$ systemctl --user edit rpi-connect-wayvnc

2.  Add the following configuration.  Again, ensure both ExecStart= lines are included.

[Service]
ExecStart=
ExecStart=/usr/bin/rpi-connect-env /usr/bin/wayvnc \
    --config /etc/rpi-connect/wayvnc.config \
    --render-cursor --unix-socket \
    --socket=%t/rpi-connect-wayvnc-ctl.sock \
    -Ldebug %t/rpi-connect-wayvnc.sock


3.  Restart the service:

$ rpi-connect restart



Viewing Service Logs

To monitor logs for both rpi-connect and its dedicated WayVNC server, use following command:

$ journalctl --user \
    --follow \
    --unit rpi-connect \
    --unit rpi-connect-wayvnc

This command continuously streams logs, allowing you to track detailed operations and pinpoint issues.


By following these steps, you can diagnose and resolve networking and firewall issues affecting Raspberry Pi Connect. Enhanced logging and access to detailed logs ensure that even complex problems can be identified and addressed effectively. 🚀



Source:  Raspberry Pi - Troubleshooting Raspberry Pi Connect

Image:  Raspberry Pi

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