Making external HTTP requests in Go

Golang: HTTP & Networking

In previous articles, we learned a lot about launching HTTP servers in Go. But a backend can also make external HTTP requests to remote servers to fetch and post data. In this article, we are going to look into HTTP client APIs provided by the Go.

This lesson requires the knowledge of JSON encoding/decoding, data streaming, file system, and other essential concepts. I advise you to get read these lessons before proceeding with this tutorial.

When a browser sends an HTTP request to a server, it sends a request object that contains data to be sent to the server and some meta-data that describes the nature of the request as well as some session information. When the server receives the request, it can respond with some data and meta-data.

A backend (server) can also act as a browser and it too can send HTTP requests to fetch some data from a remote server. However, the mechanism to send a request and handle the response has to be completely manual.

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