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transmission/docs/Bug-Submission.md

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Submitting a bug report

If you are having trouble with Transmission then the things you should do in order are:

  1. Make sure you are running the current release
  2. Search the documentation
  3. For a bug, ideally we would like you to check if it still exists in the nightly build.
  4. Search the Issue Tracker to see if your concern has already been reported:
  5. If you do not see a ticket matching your problem or feature

If you do see an existing ticket, please add a comment there again adding as much information as possible. The more users are interested in a ticket, the higher its priority will be.

Information required in a bug report

  • State the version of Transmission you are using (e.g. Linux/GTK+ 1.80). If you are using a GUI version of Transmission, you can find its version in the About dialog in the Help menu. Do not say the latest version it's ambiguous.
  • State what operating system and version (e.g. macOS 12.3.1, Ubuntu 22.04, ...)
  • Describe the symptoms in a short yet precise manner.
  • If the problem is reproducible and you explain how to reproduce it, then it stands a high chance of being addressed. If the problem is intermittent then we still want to know, but if you can not tell us how to reproduce it we cannot easily work on it.
  • See if the problem only occurs under certain conditions. E.g.: If you are seeing the bug with 50 torrents running and speed limits turned on, also check if it persists with speed limits turned off. See if it persists with 1 torrent running. See if it persists after pausing and restarting the torrent, etc.

The more work you do to narrow down the bug, the higher our chance of finding and fixing it.

Reporting specific types of problems

Additional information or steps are required for certain categories of problem:

Slow speeds

If you are experiencing slow speeds and you have been through the documentation, then please provide the following information in addition to the above:

  • Do you have any per-torrent or global speed limits set?
  • What are your global and per-torrent peer limits?
  • How many seeds and peers does the "Peers" tab say there are in the swarm?
  • How long ago does the "Tracker" tab say the last announce and scrape results were obtained?
  • In the "Tracker" tab's list of trackers, how many tiers are there, and how many trackers are listed for each tier?
  • How many peers are you connected to?
  • Has your torrent finished downloading?
  • If you are still downloading, do any of the connected peers have a higher "completed" percentage than you?
  • Is your incoming peer port open or closed? The "Peers" and "Tracker" tabs are in the dialog named "Inspector" on the Mac GUI and "Torrent Properties" on the GTK+ GUI.

Crash on macOS

If you have problems on the macOS version then please do these extra steps:

  • Make sure your system is updated to the latest version of your operating system.
  • If you are running a nightly build, set the language to English. The localization will sometimes crash the nightly builds until they are updated (right before an official release).
  • macOS collects two pieces of crash information that can help us fix the crash:
    1. In Console.app, look under LOG FILES > ~/Library/Logs/ > CrashReporter > for Transmission. If you find one, include it in your forum post.
    2. In Console.app, select LOG DATABASE QUERIES > Console Messages, and search for Transmission. If you find a message that mentions an assertion failure, include it in your forum post.

If the two pieces of information above are too large for your forum post, paste them here, choose a paste expiration of one month and click the "Create New Paste" button. Then include the pastebin's URL in your forum post.

Port mapping error

Read the Port Forwarding Guide first. You then need to include:

  • What router you are using

  • That you have confirmed that either UPnP or NAT-PMP is enabled on it

  • If you are using a custom firmware, tell us which one

  • Most importantly, post the lines from the message log that contain the phrase "Port Mapping". They will look something like this:

    02:12:27 Port Mapping (NAT-PMP): initnatpmp returned success (0)
02:12:27 Port Mapping (NAT-PMP): sendpublicaddressrequest returned success (2)
02:12:27 Port Mapping: mapping state changed from 'not mapped' to 'mapping'
02:12:27 Port Mapping: opened port 55555 to listen for incoming peer connections
02:12:35 Port Mapping (NAT-PMP): readnatpmpresponseorretry returned error -7, errno is 111 (Connection refused)
02:12:35 Port Mapping (NAT-PMP): If your router supports NAT-PMP, please make sure NAT-PMP is enabled!
02:12:35 Port Mapping (NAT-PMP): NAT-PMP port forwarding unsuccessful, trying UPnP next
02:12:37 Port Mapping (UPNP): Found Internet Gateway Device 'http://192.168.1.1:5431/uuid:0012-17c3-4e400200b4b4/WANIPConnection:1'
02:12:37 Port Mapping (UPNP): Local LAN IP Address is '192.168.1.99'
02:12:37 Port Mapping (UPNP): Port forwarding via 'http://192.168.1.1:5431/uuid:0012-17c3-4e400200b4b4/WANIPConnection:1', service 'urn:schemas-upnp-org:service:WANIPConnection:1'. (local address: 192.168.1.99:55555)
02:12:37 Port Mapping (UPNP): Port forwarding successful!
02:12:37 Port Mapping: mapping state changed from 'mapping' to 'mapped'