repl

local repl

$ clj
Clojure 1.9.0
user=> (+ 1 1)
2

socket repl

start socket repl

$ clj -J-Dclojure.server.repl="{:port 5555 :accept clojure.core.server/repl}"
Clojure 1.9.0

then, connect to this socket:

• w/ telnet

  $ telnet 127.0.0.1 5555
  Trying 127.0.0.1...
  Connected to localhost.
  Escape character is '^]'.
  user=> (println "hello")
  hello
  user=> :repl/quit
  Connection closed by foreign host.
  

• w/ unravel based on the unrepl protocol

  $ unravel 127.0.0.1 5555
  Unravel 0.3.0-beta connected to 127.0.0.1:5555
  
  user=> (println "hello")
  hello
  nil
  

nREPL

deps.edn

{:deps
 {nrepl {:mvn/version "0.4.1"}}}

start nrepl server

$ clj
Clojure 1.9.0
user=> (use '[nrepl.server :only (start-server stop-server)])
nil
user=> (defonce server (start-server :port 7888))
#'user/server

client connect to nrepl server

$ clj
Clojure 1.9.0
user=> (require '[nrepl.core :as repl])
nil
(with-open [conn (repl/connect :port 7888)]
     (-> (repl/client conn 1000)
       (repl/message {:op :eval :code "(+ 1 1)"})
       repl/response-values))
[2]