add a better example client

example/client/main.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"flag"
+	"net/http"
+	"sync"
+
+	"github.com/lucas-clemente/quic-go/h2quic"
+	"github.com/lucas-clemente/quic-go/utils"
+)
+
+func main() {
+	verbose := flag.Bool("v", false, "verbose")
+	flag.Parse()
+	urls := flag.Args()
+
+	if *verbose {
+		utils.SetLogLevel(utils.LogLevelDebug)
+	} else {
+		utils.SetLogLevel(utils.LogLevelInfo)
+	}
+
+	hclient := &http.Client{
+		Transport: &h2quic.QuicRoundTripper{},
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(len(urls))
+	for _, addr := range urls {
+		utils.Infof("GET %s", addr)
+		go func(addr string) {
+			rsp, err := hclient.Get(addr)
+			if err != nil {
+				panic(err)
+			}
+			utils.Infof("Got response for %s: %#v", addr, rsp)
+			wg.Done()
+		}(addr)
+	}
+	wg.Wait()
+}