go-host-multi-domains-example

Example of hosting multiple domains in a single Golang HTTP server.

Host Multiple Domains in a Single Golang HTTP Server

To host multiple domains in a single Golang HTTP server, we need to use Host-specific pattern for ServeMux:

Patterns may optionally begin with a host name, restricting matches to URLs on that host only. Host-specific patterns take precedence over general patterns, so that a handler might register for the two patterns "/codesearch" and "codesearch.google.com/" without also taking over requests for "http://www.google.com/".

// For Example:
func main() {
    http.HandleFunc("a.com/", helloA)
    http.HandleFunc("sub.a.com/", helloSubA)
    http.HandleFunc("b.com/", helloB)

    if err := http.ListenAndServe(":80", nil); err != nil {
        log.Fatal(err)
    }
}

Usage

• Add "a.com", "sub.a.com", "b.com" into /etc/hosts
• Restart network service or reboot.
• sudo ./go-host-multi-domains-example
• Run curl a.com, curl sub.a.com, curl b.com to test.

License

• MIT License