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A TCP server is similar to an HTTP server, except that for each connection the handler takes two arguments: a duplex stream and a map containing information about the client. The stream will emit byte-arrays, which can be coerced into other byte representations using the byte-streams library. The stream will accept any messages which can be coerced into a binary representation.

An echo TCP server is very similar to the above WebSocket example:

(require '[aleph.tcp :as tcp])

(defn echo-handler [s info]
  (s/connect s s))

(tcp/start-server echo-handler {:port 10001})

A TCP client can be created via (aleph.tcp/client {:host "", :port 10001}), which returns a deferred which yields a duplex stream.

To learn more, read the example code.

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