Any better client then telnet for connecting to a socket repl server?

[Didier]

I want to connect to a Clojure socket repl server, but telnet is a really terrible repl experience. Anyway I can have a better client to connect to it that would have some better support for history, backspace, maybe even some auto-complete, highlight, etc. Whatever I can get over telnet?

Thanks

[Chris Shellenbarger]

Can you use NREPL?  https://github.com/clojure/tools.nrepl  

This seems to be what most tools that provide a REPL are built on top of (Cursive, CIDER, etc).

[Timothy Baldridge]

Sadly NREPL isn't a REPL it's a RPC protocol transport for remote controlling a Clojure instance. 

You might look into rebel: although I'm not sure how well that plays with remote terminals.  https://github.com/bhauman/rebel-readline.

Also look into doing some of this with readline. Perhaps you can pipe something together via netcat, GPL readline, and socket servers?

Also Emacs provide a lot of this support via inferior lisp. So, like any lisp you can tell emacs that your inferior lisp command is a telnet command and it all "just works". 

Timothy

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“One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.”
(Robert Firth)

[Sean Corfield]

You can use rlwrap with telnet but it’s a bit of a pain to deal with getting back out of the session. I’ve found the following works:

 

                rlwrap -q ^Q telnet 127.0.0.1 5555

 

This sets up control-q as a quote character so when you’re ready to exit the session you can do ^Q ^] q <return>

 

Sean Corfield -- (970) FOR-SEAN -- (904) 302-SEAN
An Architect's View -- http://corfield.org/

"If you're not annoying somebody, you're not really alive."
-- Margaret Atwood

 

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From: clo...@googlegroups.com <clo...@googlegroups.com> on behalf of Didier <did...@gmail.com>
Sent: Friday, March 2, 2018 5:49:45 PM
To: Clojure
Subject: Any better client then telnet for connecting to a socket repl server?

 

I want to connect to a Clojure socket repl server, but telnet is a really terrible repl experience. Anyway I can have a better client to connect to it that would have some better support for history, backspace, maybe even some auto-complete, highlight, etc. Whatever I can get over telnet?

Thanks

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[Kimmo Koskinen]

Hi!

There are quite impressive socket repl clients such as https://github.com/Unrepl/unravel and https://github.com/Unrepl/spiral (for Emacs) both of which use the unrepl protocol https://github.com/unrepl/unrepl.

- Kimmo

[Stuart Sierra]

I sometimes use inf-clojure mode in Emacs, which can connect directly to a socket REPL. I have a helper Elisp function inf-clojure-to-socket.

You might also try readline with Netcat (nc) as an alternative to Telnet.

–S

[Didier]

Okay, for anyone else coming here and looking, you must absolutely try out Unravel https://github.com/Unrepl/unravel

Its a command line tool that you install through npm (implemented in ClojureScript cool!), and then you can just do:

unravel <ip> <port>

From your terminal, and it will connect to any standard Clojure 1.8+ socket repl and give you a Repl with full emacs like readline, multi-line support, auto-complete, and eldoc style instant documentation. No need to add any extra dependencies to your Clojure project or setup anything more then just activate the socket repl.

Frankly its amazing, and I think everyone who needs to connect to a socket repl should give it a go.

P.S.: Also shout out to Spiral https://github.com/Unrepl/spiral, which is an emacs package for connecting to a Clojure 1.8+ socket REPL which gives you almost as many features as Cider does with nRepl.