Supporting many-to-many communication

In a variety of contexts -- from social media to wireless sensor networks -- we see increasingly complex patterns of communication, often characterized by having multiple senders for messages. This paper argues that existing communication mechanisms do not adequately support many-to-many communication, and proposes multicall -- a richer form of blocking broadcast -- as a possible solution. The syntax and implementation of multicall are presented, followed by examples to illustrate how multicall can be used to program many-to-many communication.