Network Programming with Rust

Introduction to RPC

In regular programming, it is often useful to encapsulate frequently used logic in a function so that it can be reused in multiple places. With the rise of networked and distributed systems, it became necessary to let a common set of operations be accessible over a network, so that validated clients can call them. This is often called a Remote Procedure Call (RPC). In Chapter 4, Data Serialization, De-Serialization, and Parsing, we saw a simple example of this when a server returned the distance of a given point from the origin. Real world RPC has a number of application layer protocols defined, which are far more complex. One of the most popular RPC implementations is gRPC, which was initially introduced by Google and ...