The package library is github.com/miekg/dns. The Msg Unpack function is used to extract data from a DNS message.
Example 1:
msg := &dns.Msg{} err := msg.Unpack(buffer) if err != nil { fmt.Println("Error unpacking DNS message: ", err) }
This code creates a new empty DNS message, and then populates it with data by unpacking a buffer. If an error occurs during unpacking, it is printed to the console.
Example 2:
func handleDNSRequest(w dns.ResponseWriter, r *dns.Msg) { // unpack the request message if err := r.Unpack(r); err != nil { log.Printf("Error unpacking DNS request message: %s", err) return } // handle the request }
This code defines a function that handles incoming DNS requests. It starts by unpacking the request message using the Unpack function. If an error occurs, it logs the error message and returns. If the message is successfully unpacked, it proceeds to handle the request.
Overall, the github.com/miekg/dns package is a useful library for working with DNS messages in Go. It provides functions like Msg Unpack that simplify the process of extracting data from DNS messages.
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