Caido

Startup ​

"Instance is unreachable." ​

If you encounter this error when attempting to launch a Caido instance, it indicates the Caido subprocess failed to spawn. View the backend logs for more insight.

Instance is unreachable.

Plugin Failure ​

This can occur if a backend component of a plugin is dead locked. To resolve this issue, enable safe mode to disable either the frontend or backend plugin components and recover the Instance:

  • To disable the frontend component of a plugin, access Caido in your browser by navigating to http://127.0.0.1:8080/?safe.
  • To disable the backend component of a plugin, launch the Caido CLI with the --safe flag:
caido --safe

"Encountered an error when communicating with the destination server." ​

If you encounter a similar message to the following:

Encountered an error when communicating with the destination server

Failed to acquire connection

Caused by:
    0: Failed to perform TLS handshake
    1: error:1408F10B:SSL routines:ssl3_get_record:wrong version number:ssl/record/ssl3_record:c:332

Check your proxy settings and ensure the Type is set to HTTP.

Proxy settings type.

"Could not initialize configuration." ​

If you encounter a similar message to the following:

Error: Could not initialize configuration
Caused by:
    0: Authentication service error
    1: Cloud operation failed
    2: Cloud unavailable
    3: error sending request for url (https://api.caido.io/oauth2/register): error trying to connect: tcp connect error: Connection refused (os error 111)
    4: error trying to connect: tcp connect error: Connection refused (os error 111)
    5: tcp connect error: Connection refused (os error 111)
    6: Connection refused (os error 111)

Check your internet connection. Caido requires an internet connection at the following moments:

  • On first launch.
  • During login.
  • After 7 days offline (the time period after which your authentication token needs to be refreshed).

For more information on why/when this is required, view the Authentication page.

"Date mismatch: make sure your device's date and time settings are correct." ​

If you encounter this error during login, it means that your computer time is likely out of sync. Visit time.is to confirm it.

Date mismatch.

Caido allows 5 minutes of deviation between the "real" time and your computer time. To fix it, you will have to manually resync the time using NTP.

Fixing on Windows: ​

  1. Right-click on the clock.
  2. Select Adjust date and time.
  3. Go to Date & Time in Settings.
  4. Click Sync now.

Fixing on macOS: ​

  1. Open a terminal window.
  2. Use the sntp command with the -S option to slew the clock:
sudo sntp -S pool.ntp.org
  1. Check the time synchronization status again using the same command.

Fixing on Linux: ​

  1. Open a terminal or SSH into your server.
  2. Install the NTP package:
sudo apt-get install ntp
  1. Once the installation is complete, the NTP service should start automatically.
  2. Check its status with:
sudo systemctl status ntp