XMPP Service Operators - 2020-01-12

Wait a minute, in what scenario would a xmpp daemon not use the system resolver on a POSIX system?

As in, the one that's built into the operating system itself, that you use /etc/resolv.conf to configure

tom, the API for that typically doesn't support looking up SRV records and often doesn't support non-blocking lookups (you don't want the XMPP daemon to stop processing messages while it waits for DNS queries to return answers)

There is an async interface to getaddrinfo, but I don't know how portable it is and it's a bit clunky to use

But SRV is a requirement

Typically?

Never 🙂

There's no POSIX API to perform SRV lookups.

Oh, I didn't see/ingest "POSIX system" in the question

Yeah, no such thing

Hmm, looking at my operating system's programmer's manual there's GAI_NOWAIT() which offers async lookups, but let me check if you can request a specific type of record

My "typically" was to cover that there may be systems with such APIs, I'm no Windows dev but I once heard rumour that there is something in the Windows API for SRV lookup

I don't see the point of programming server software for a DOS or NT system

Nobody in there right mind is using Windows for a server os

That's different to "nobody is" :)

Windows servers, OS X servers, they exist

Servers is what Microsoft makes their money with these days …

But why would you want to support a setup like that?

Prosody doesn't, we dropped Windows support long ago

» [14:36:28] <Holger> Servers is what Microsoft makes their money with these days … I thought Microsoft made their money selling Linux VPS hosting, as in Azure

You sound like you're trying to show how someone is doing something completely stupid but can't quite spot who and what this would be 🙂

I ounce worked for a company that was a "Authorized Microsoft Distributor" as a Network Engineer and Linux programmer. Most of their interaction with their customers was upselling them things to *fix* their problem. For example a company couldn't send mail to outlook MX servers because their RDNS was set incorrectly. I was actually the person who was tasked with looking into this. I reported my findings and how to fix the problem, yet the "problem" ending up being that the company needed to buy a more expensive M$ Outlook service plan and that's why their mail wasn't getting though.

I guess we can agree on disliking Microsoft.

Not a simple call to the ISP to change a record, or that fact that for some stupid reason M$'s mail servers where disconnecting authenticated smtp587 users for an rdns hickup

But yeah, I didn't realize POSIX doesn't have a way to call other record types

Thanks for explaining