improved readme, added more logs

.gitignore

@@ -2,3 +2,4 @@
 .idea
 .vscode
 build
+godnsbench

README.md

@@ -37,3 +37,21 @@ Application Options:
 Help Options:
   -h, --help      Show this help message
 ```
+
+## Examples
+
+10 connections, 1000 queries to Google DNS using DNS-over-TLS:
+```shell
+godnsbench -a tls://dns.google -p 10 -c 1000
+```
+
+10 connections, 1000 queries for `example.net` to Google DNS using DNS-over-TLS:
+```shell
+godnsbench -a https://dns.google/dns-query -p 10 -c 1000 -q example.net
+```
+
+10 connections, 1000 queries for `example.net` with timeout 1 second to
+AdGuard DNS using DNS-over-QUIC:
+```shell
+godnsbench -a quic://dns.adguard.com/dns-query -p 10 -c 1000 -t 1 -q example.net
+```

main.go

@@ -123,6 +123,7 @@ func run(options *Options) {
 	log.Info("Connections count: %d", options.Connections)
 	log.Info("Query: %s", options.Query)
 	log.Info("Queries to send: %d", options.QueriesCount)
+	log.Info("Query timeout: %d seconds", options.Timeout)
 
 	_, err := upstream.AddressToUpstream(options.Address, &upstream.Options{})
 	if err != nil {
@@ -212,6 +213,11 @@ func runConnection(options *Options, state *runState) {
 		} else {
 			_ = state.incErrors()
 			log.Debug("error occurred: %v", err)
+
+			// We should re-create the upstream in this case.
+			u, _ = upstream.AddressToUpstream(options.Address, &upstream.Options{
+				Timeout: time.Duration(options.Timeout) * time.Second,
+			})
 		}
 
 		queriesToSend = state.decQueriesToSend()