use RequestTlsCert for isOnline

connect/webConn.go

@@ -4,6 +4,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"net/http"
+	"net/http/httptrace"
 	"regexp"
 	"strings"
 	"time"
@@ -203,29 +204,29 @@ func (wc *webConn) isOnlineHelper(addr string, pingTimeout time.Duration) (time.
 		Transport: tr,
 		Timeout:   pingTimeout,
 	}
-	target := "https://" + addr
+	target := "https://" + addr + "/mixmessages.Gateway/RequestTlsCert"
 	req, err := http.NewRequest("GET", target, nil)
 	if err != nil {
 		jww.WARN.Printf("Failed to initiate request: %+v", err)
 		return time.Since(start), false
 	}
 
-	//trace := &httptrace.ClientTrace{
-	//	DNSDone: func(dnsInfo httptrace.DNSDoneInfo) {
-	//		jww.TRACE.Printf("DNS Info: %+v\n", dnsInfo)
-	//	},
-	//	GotConn: func(connInfo httptrace.GotConnInfo) {
-	//		jww.TRACE.Printf("Got Conn: %+v\n", connInfo)
-	//	},
-	//	GotFirstResponseByte: func() {
-	//		jww.TRACE.Print("Got first byte!")
-	//	},
-	//}
+	trace := &httptrace.ClientTrace{
+		DNSDone: func(dnsInfo httptrace.DNSDoneInfo) {
+			jww.TRACE.Printf("DNS Info: %+v\n", dnsInfo)
+		},
+		GotConn: func(connInfo httptrace.GotConnInfo) {
+			jww.TRACE.Printf("Got Conn: %+v\n", connInfo)
+		},
+		GotFirstResponseByte: func() {
+			jww.TRACE.Print("Got first byte!")
+		},
+	}
 
 	// IMPORTANT - enables better HTTP(S) discovery, because many browsers block CORS by default.
 	req.Header = wc.addHeaders(req.Header)
 	jww.TRACE.Printf("(GO request): %+v", req)
-	//req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
+	req = req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
 	if _, err = client.Do(req); err != nil {
 		jww.TRACE.Printf("(GO error): %s", err.Error())
 		if checkErrorExceptions(err) {