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<concept id="GUID-5546C1F6-2110-5031-99BC-66E6958D513B" xml:lang="en"><title>EchoClientEngine:
TCP/IP Echo Client Engine</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<section><title>Download</title> <p>Example download as well as source
code located at: <xref href="GUID-2274DE87-8D6B-5376-A9AE-03ABE4DEE495.dita">EchoClientUI</xref>.</p> </section>
<section><title>Description</title> <p>The TCP example is a client for the
simple Echo protocol. A server implementing this protocol, defined in RFC862,
simply listens on port 7 for incoming data, and returns it to the client.
EchoClientEngine is a DLL that implements the engine component of the client.
It contains active object classes that encapsulate reading, writing and connect
operations. The related example project <xref href="GUID-2274DE87-8D6B-5376-A9AE-03ABE4DEE495.dita">EchoClientUI</xref> provides
a GUI interface to drive the engine. </p> </section>
<section><title>Class summary</title><p> <xref href="GUID-EF29C1D7-B1E5-370F-AE37-66231A6BE449.dita"><apiname>RSocketServ </apiname></xref>  <xref href="GUID-B16CAD6D-85B1-3482-AAC0-9BADEDB6ABDD.dita"><apiname>RHostResolver </apiname></xref>  <xref href="GUID-C625E339-6726-3FB9-8F8A-F4DB0CAC15FF.dita"><apiname>TNameEntry </apiname></xref>  <xref href="GUID-567CF5B5-464F-37B7-A91E-6A672C39BA44.dita"><apiname>TNameRecord </apiname></xref> <xref href="GUID-5733DF34-5B54-3044-BBED-3BFECB7ACE7A.dita"><apiname>CTimer </apiname></xref>  </p></section>
</conbody></concept>