Some programming languages based on the Actor model or other distributed programming models define messaging as the (usually asynchronous) sending (usually by copy) of a data item to a communication endpoint (Actor, process, thread, socket, etc.). Such messaging is used to implement various RPC services including SOAP which is used for access to Web Services. In computer science, the Actor model, first published in 1973, is a mathematical model of concurrent computation developed by Carl Hewitt and his students and colleagues at CalTech, Kyoto University, MCC, MIT, SRI, Stanford University, University of Illinois, University of Paris 6, University of Pisa, University of Tokyo and elsewhere. ... This article or section should be merged with Distributed computing Distributed programming falls out of the use of computers to form networks. ... A remote procedure call (RPC) is a protocol that allows a computer program running on one host to cause code to be executed on another host without the programmer needing to explicitly code for this. ... This article is about a common cleaning mixture. ... A web service is a collection of protocols and standards used for exchanging data between applications. ...

This concept is the higher level version of a datagram except that messages can be larger than an packet and can optionally be made reliable, durable, secure, and/or transacted. A packet is the fundamental unit of information carriage in all modern computer networks. ... In engineering in general, reliability is the capacity of a component or a system of such components to perform as designed. ... Durable - the ability to endure. ... This page covers security in the sense of protection from hostile action. ... A database transaction is a unit of interaction with a database management system or similar system that is treated in a coherent and reliable way independent of other transactions. ...

Messages are also commonly used in the same sense as a mean of interprocess communication; the other common technique being stream or pipes, in which data is sent as an a sequence of elementary data items instead (the higher level version of a virtual circuit). A virtual circuit (VC) is a communications arrangement in which data from a source user may be passed to a destination user over more than one real circuit configuration during a single period of communication, but the switching is hidden from the users. ...

In the terminology of some object oriented languages, a message is the single means to pass control to an object. If the object 'responds' to the message, it has a method for that message. Object-oriented programming (OOP) is a computer programming paradigm in which a software system is modeled as a set of objects that interact with each other. ... Used mainly in object-oriented programming, the term method refers to a piece of code that is exclusively associated either with a class (called class methods or static methods) or with an object (called instance methods). ...

The equivalent in conventional (procedural, imperative or problem oriented) programming languages to a message is a function call. Procedural programming is a programming paradigm based upon the concept of the modularity and scope of program code (i. ... In computer science, imperative programming, as opposed to declarative programming, is a programming paradigm that describes computation in terms of a program state and statements that change the program state. ...

Note that message is a function call, not the function or the signature of the function (i.e. formal parameters plus name), and not the function instance resulting from the call, so to 'send the message' means to 'call the function'. See message for other meanings, e.g. in communications protocols. The signature of a function is roughly equivalent to its prototype definition in the C programming language. ... Message in its most general meaning is the object of communication. ... In the field of telecommunications, a communications protocol is the set of standard rules for data representation, signalling, authentication, and error detection required to send information over a communications channel. ...

Sending the same message to an object twice will usually result in the object to apply the method twice. Two messages are considered to be the same message, if the name and the arguments of the message are identical. This article needs cleanup. ...

Objects can send messages to other objects from within their method bodies. In most languages that support object orientation however, the sender of a message can be code that doesn't belong to any specific object as well.

Some languages support the forwarding or delegation of method invocations from one object to another if the former has no method to handle the message, but 'knows' another object that may have one. For the programming technique, see Delegation (programming). ...