messenger

Multi-threaded, console-based, 2-way instant messaging system with
authentication, based on NNG scalability protocols.

R binding for NNG (Nanomsg Next Gen), a successor to ZeroMQ. NNG is
a socket library implementing 'Scalability Protocols', a reliable,
high-performance standard for common communications patterns including
publish/subscribe, request/reply and service discovery, over in-process,
IPC, TCP, WebSocket and secure TLS transports. As its own threaded
concurrency framework, provides a toolkit for asynchronous programming and
distributed computing, with intuitive 'aio' objects which resolve
automatically upon completion of asynchronous operations, and
synchronisation primitives allowing R to wait upon events signalled by
concurrent threads.

Charlie Gao

nanonext

NNG (Nanomsg Next Gen) Lightweight Messaging Library

Hibiki AI Limited 

R Consortium 

messenger function

<dl><dt>url</dt>
<dd>a URL to connect to, specifying the transport and address as a
character string e.g. 'tcp://127.0.0.1:5555' (see transports).</dd>
<dt>auth</dt>
<dd>[default NULL] an R object (possessed by both parties) which
serves as a pre-shared key on which to authenticate the communication.
Note: the object is never sent, only a random subset of its md5 hash after
serialization.</dd></dl>

Arguments

Type outgoing messages and hit return to send.
The timestamps of outgoing messages are prefixed by <code>&gt;</code> and that of
incoming messages by <code>&lt;</code>.
<code>:q</code> is the command to quit.
Both parties must supply the same argument for &#8216;auth&#8217;, otherwise the
party trying to connect will receive an &#8216;authentication error&#8217; and be
immediately disconnected.

Usage