Re: HTTP/2 & Telnet?
  By: Steven Philley to All on Sun Aug 26 2018 05:23 pm

 > Hi Everyone,
 >
 > Today I discovered HTTP/2. It's a new standard in HTTP to replace HTTP1.x,
 > it also supports pushing data to the client and solves a common blocking
 > issue.
 >
 > I read that HTTP/2 will not support Telnet because HTTP/2 is binary based
 > rather than text based.

HTTP 1.x doesn't "suppot Telnet" either. Since Telnet is *mostly* just text
over TCP, some people use telnet clients to send/receive plain-text messages
(requests, commands, whatever) to/from servers that use plain-text TCP
protocols (e.g. HTTP, SMTP, FTP, NNTP, POP, IMAP, IRC, etc.) for testing
purposes. It's actually better to *not* use a Telnet client for this purpose
but rather a simple TCP client app, like netcat or perhaps the "raw TCP" or
"raw socket" feature of a terminal program. That way the client won't send or
expect Telnet commands (beginning with the IAC, 0xff character) that the server
isn't going to recognize or send.

 > Can Telnet be used to debug HTTP1.x requests?

Most telnet clients can be used to debug HTTP (and other TCP) servers, but they
are not ideal for use.

 > Is this what they are takling
 > about when they say Telnet can't be used over Http/2?

Yes.

 > Or do they literally
 > mean that the entire Telnet protocol simply wont work at all with Http/2?

No.

 > My initial thought is that this may have some serious implications for
 > BBSes. Does anyone have any insight?

No, no implications for BBSes (that use Telnet).

-Rob

                                            digital man

This Is Spinal Tap quote #2:
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