Re: TCP vs UDP Sockets

I don't know. He was having intermittend DNS issues resolving host names
and IBM seems to have told him to switch from TCP to UDP.

I have no idea what their reasoning is. Just asking if it makes any sense
to anyone here.. haha.

On Tue, Jun 3, 2025 at 9:56 AM Charles Wilt <charles.wilt@xxxxxxxxx> wrote:

That doesn't make sense...

Whatever he's talking to would have to be set up to listen for UDP.

Is it possible IBM is talking about the DNS query itself? DNS is one app
that does support UDP and TCP.

Normally, a regular DNS query goes out via UDP. DNS Zone transfers, are
usually done with TCP.

HTH,
Charles

On Tue, Jun 3, 2025 at 8:41 AM Brad Stone <bvstone@xxxxxxxxx> wrote:

I have a client who is having issues with DNS and IBM told him to switch
his socket programs from using TCP to UDP.

Any rationale behind that that anyone can think of? Would this even work
for an application making RESTful requests using a tool like HTTPAPI or
GETURI

Bradley V. Stone
www.bvstools.com
Native IBM i e-Mail solutions for Microsoft Office 365, Gmail, or any

Cloud

Provider!
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