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Fruits is the generic term for apples and pears.
What is the generic term for sender and receiver in an abstract context?
In my special case I have users and servers who both can send and receive messages. I want to create a class to handle general logic for both of them.
From a native speaker:
Perhaps you are looking not for a single item that sends and receives, but one label that applies to either party. Use party to mean either end of the communication. You can introduce the connection between the label 'party' and both parties on the line by writing "When either party, the send or receiver, is active ..."
Devices that can both send and receive are known as transceivers:
transceiver noun [ C ]
a piece of equipment that can send out and receive electronic signals:
- It has an infrared transceiver which can be used to exchange files with similarly equipped machines.
Cambridge Dictionary
When servers or users send and receive information they communicate.. so in that role perhaps they are:
communicators
Oxford Dictionary's definition of communicator
com·mu··ni·ca·tor kəˈmyo͞onikādər/ noun plural noun: communicators
1. a person who is able to convey or exchange information, news, or ideas, especially one who is eloquent or skilled. "a gifted communicator"
2. an apparatus used to exchange information between individuals, ships, planes, etc. "it'll send a signal to your hand-held communicator"
Communication endpoint seems to fit best in my case.
Hub, perhaps, - the effective centre of an activity, region, or network. There can be multiple hubs in a network...
