ghc-courier

Inspired by Erlang's simple message-passing facilities, courier provides
roughly similar capabilities. Applications simply create one or more endpoints,
bind each to a transport using a given name, then can freely send / receive
messages to other endpoints just by referencing the name each endpoint bound to
its transport.
A primary driver of this package's design is separation of concerns: many
algorithms (especially for distributed applications) depend upon a
message-passing foundation, but the algorithms are sufficiently complex that
the details of how those messages are transmitted among nodes are best hidden
away and solved separately from the distributed algorithm itself. With this in
mind, this package aims to provide a variety of transports as well as support
for common communication idioms (e.g., in order message delivery, selective out
of order message delivery, synchronous RPC, etc.).
Applications may process messages in the order received at an endpoint, or use
selective message reception to process the first message arriving at an
endpoint that also matches a provided selection function. Through selective
message reception, applications may approximate the style of an Erlang
application, and enjoy better composability of message reception with multiple
independent dispatch routines or message pumps.

          

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License: MIT
URL: https://hackage.haskell.org/package/courier