Chapter 2 - Modern gRPC Fundamentals

Why gRPC is so popular?

Synchronous vs Asynchronous APIs

Stub

Channel

How Is RPC Call Processed?

Service Types

Defining RPC Services

Listening Port

Deadlines

Setting a Deadline

Checking Deadlines

Exercises 1: Unary Service

CMake Setup

Find gRPC Package

Defining a New RPC Service

Generating gRPC Service Code

Synchronous (Blocking)

Server Implementation

Client Implementation

Asynchronous (non-blocking)

Server Implementation

Client Implementation

Exercises 2: Client Streaming Service

Proto Definition

Synchronous (Blocking)

Server Implementation

Client Implementation

Asynchronous (non-blocking)

The callback-based asynchronous API lets gRPC drive streaming RPCs using reactor callbacks instead of requiring the server to block while waiting for incoming messages.

Server Implementation

Client Implementation

Summary