all: comply with linter recommendations #2

HTTP request now implicitly create request with context.

Any false positive related to not closing HTTP response body has been
annotated with "nolint:bodyclose".

In the example code, use consistent "// Output:" comment format, by
prefixing with single space.
Any comment on code now also prefixing with single space.

An error returned without variables now use [errors.New] instead of
[fmt.Errorf].
Any error returned using [fmt.Errorf] now wrapped using "%w" instead of
"%s".
Also, replace error checking using [errors.Is] or [errors.As], instead
of using equal/not-equal operator.

Any statement like "x = x OP y" now replaced with "x OP= y".
Also, swap statement is simplified using "x, y = y, x".
Any switch statement with single case now replaced with if-condition.

Any call to defer on function or program that call [os.Exit], now
replaced by calling the deferred function directly.

Any if-else condition now replaced with switch statement, if possible.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/dns/server.go b/lib/dns/server.go
index 9da9d85e..fcf40cab 100644
--- a/lib/dns/server.go
+++ b/lib/dns/server.go
@@ -109,13 +109,13 @@ func NewServer(opts *ServerOptions) (srv *Server, err error) {
 	udpAddr = opts.getUDPAddress()
 	srv.udp, err = net.ListenUDP("udp", udpAddr)
 	if err != nil {
-		return nil, fmt.Errorf("dns: error listening on UDP '%v': %s", udpAddr, err)
+		return nil, fmt.Errorf(`dns: error listening on UDP '%v': %w`, udpAddr, err)
 	}
 
 	tcpAddr = opts.getTCPAddress()
 	srv.tcp, err = net.ListenTCP("tcp", tcpAddr)
 	if err != nil {
-		return nil, fmt.Errorf("dns: error listening on TCP '%v': %s", tcpAddr, err)
+		return nil, fmt.Errorf(`dns: error listening on TCP '%v': %w`, tcpAddr, err)
 	}
 
 	if len(opts.TLSCertFile) > 0 && len(opts.TLSPrivateKey) > 0 {