Gelf source with TCP also

[madalinignisca]

Hello

I see that Gelf source is capable of only UDP protocol, but could it be extended to support TCP also, as Graylog supports both protocols. It is to support taking over previous Graylog installations to be replaced with Loki, where all applications have been set to push Gelf logs to TCP and not UDP and changing that would be close to impossible.

[github-actions]

This issue has not had any activity in the past 30 days, so the needs-attention label has been added to it.
If the opened issue is a bug, check to see if a newer release fixed your issue. If it is no longer relevant, please feel free to close this issue.
The needs-attention label signals to maintainers that something has fallen through the cracks. No action is needed by you; your issue will be kept open and you do not have to respond to this comment. The label will be removed the next time this job runs if there is new activity.
Thank you for your contributions!