[fpc-pascal] Patches for Issue #37906 - DNS over TCP

[Michael Van Canneyt]

On Sat, 30 Jan 2021, Noel Duffy via fpc-pascal wrote:

> I've added patches to resolve issue #37906, DNS over TCP, to the bug tracker:
>
> https://bugs.freepascal.org/view.php?id=37906
>
> I've broken the changes into three patches:
>
> 1. netdb.patch, which updates packages/fcl-net/src/netdb.pp, adding support 
> for DNS over TCP
> 2. netdb-example.patch, which adds an example program to 
> packages/fcl-net/examples and adds it to 
> packages/fcl-net/examples/Makefile.fpc
> 3. netdb-tests.patch, which adds unit tests to packages/fcl-net/tests and 
> updates tests/Makefile.fpc to add the new tests to the build system
>
> I've created separate patches to simplify applying them. If there's a problem 
> with one, the others should still be OK.
>
> In addition to new code for DNS over TCP, this latest set of patches adds 
> checks for writes beyond buffer boundaries and other potential security 
> issues. Since the last update I've also added support for SRV records, as 
> defined in RFC 2782.

Very nice indeed !! I checked your patches, they're all applied.

Thank you very much for this contribution !

Michael.