How to Redirect HTTP to HTTPS in a Go Application?

How to Redirect HTTP Traffic to HTTPS in Go

Problem:

You've enabled TLS, allowing your Go application to accept HTTPS connections. However, you also want to redirect HTTP traffic to HTTPS.

Solution:

Create a custom handler to handle HTTP traffic and redirect it to HTTPS:

import (
    "net/http"
)

func redirectToTls(w http.ResponseWriter, r *http.Request) {
    // If you are serving on Go servers, you can use "r.Host"
    http.Redirect(w, r, "https://your-domain-name.com"+r.RequestURI, http.StatusMovedPermanently)
}

Next, add the following code to redirect HTTP traffic:

    go func() {
        if err := http.ListenAndServe(":80", http.HandlerFunc(redirectToTls)); err != nil {
            log.Fatalf("ListenAndServe error: %v", err)
        }
    }()

This will start a separate goroutine for handling HTTP traffic, where it redirects incoming HTTP requests to their HTTPS counterparts.

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