add udp jumboframe support

[zusrut]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 63.83%. Comparing base (0460b40) to head (3a7997d).
⚠️ Report is 192 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/sip/service.go	0.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #527      +/-   ##
==========================================
- Coverage   65.25%   63.83%   -1.43%     
==========================================
  Files          51       32      -19     
  Lines        6588     6196     -392     
==========================================
- Hits         4299     3955     -344     
+ Misses       1915     1830      -85     
- Partials      374      411      +37     

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[dennwc]

Maybe just expose it as udp_mtu_size instead?

[zusrut]

There’s not much point in managable limit, since it only skipping the packet and logging an error. And there’s no handler for managing oversized data anyway.
Also, keep in mind how the transport package uses this value — it currently subtracts 200 from the initial limit, so you don’t have full control if the package changes in the future.

[dennwc]

I renamed it to UDPMaxPayload to indicate that it's not an MTU specifically. We may use it later and propagate it down to the sipgo package.