Backport of "dtlstransport: Keep strong ref of dtls encoder/decoder" into 1.22
Backport of !4519 (merged) "dtlstransport: Keep strong ref of dtls encoder/decoder".
Commits:
- d9c853f1 dtlstransport: Keep strong ref of dtls encoder/decoder
Backport of !4519 (merged) "dtlstransport: Keep strong ref of dtls encoder/decoder".
Commits: