How to Set Up HTTPS on a Go Web Server Using Comodo SSL Certificates?

Setting Up HTTPS on a Go Web Server Using Given SSL Certificates

You have obtained an SSL certificate from Comodo and noticed that it comprises multiple files, including csr.pem, private-key.pem, website.com.crt, website.com.ca-bundle, and website.com.zip. You seek guidance on how to establish HTTPS using these files on a Go web server.

Concatenating PEM Files

The need to concatenate PEM files arises because Go requires you to provide a single certificate file containing your certificate and any intermediate certificates, and a single private key file. Combining these files into one certificate file is necessary for browsers to recognize and verify the certificate chain.

Setting Up HTTPS in Go

To set up HTTPS on a Go web server using the provided files, you can utilize the ListenAndServeTLS function from the net/http package:

http.HandleFunc("/", handler)
log.Printf("About to listen on 10443. Go to https://127.0.0.1:10443/")
err := http.ListenAndServeTLS(":10443", "full-cert.crt", "private-key.key", nil)
log.Fatal(err)

In this code, "handler" is your function that handles web requests, and "full-cert.crt" and "private-key.key" represent the concatenated certificate file and the private key file, respectively.

Combining Certificate Files

To concatenate your certificate files to create the required "full-cert.crt", you can use the cat command:

cat website.com.crt website.com.ca-bundle > full-cert.crt
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