Remote Procedure Calls with RPC

Go programs can communicate with each other through the net/rpc-package; so this is another application of the client-server paradigm. It provides a convenient means of making function calls over a network connection. Of course, this is only useful when the programs run on different machines. The rpc package builds on the package gob to turn its encode/decode automation into transport for method calls across the network.

A server registers an object, making it visible as a service with the type-name of the object. This provides access to the exported methods of that object across a network or other I/O connection for remote clients. It is all about exposing methods on types over a network. The package uses the Http and TCP protocol, and the gob package for data transport. A server may register multiple objects (services) of different types, but it is an error to register multiple objects of the same type.

Here we discuss a simple example: