Request without host throw exception

openzipkin · May 14, 2018 · 8e73b3c · 8e73b3c
1 parent f52cdc6
commit 8e73b3c
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/Src/zipkin4net.middleware.aspnetcore/Src/TracingMiddleware.cs b/Src/zipkin4net.middleware.aspnetcore/Src/TracingMiddleware.cs
@@ -22,7 +22,10 @@ public static class TracingMiddleware
                 Trace.Current = trace;
                 using (var serverTrace = new ServerTrace(serviceName, getRpc(context)))
                 {
-                    trace.Record(Annotations.Tag("http.host", request.Host.ToString()));
+                    if (request.Host.HasValue)
+                    {
+                        trace.Record(Annotations.Tag("http.host", request.Host.ToString()));
+                    }
                     trace.Record(Annotations.Tag("http.uri", UriHelper.GetDisplayUrl(request)));
                     trace.Record(Annotations.Tag("http.path", request.Path));
                     await serverTrace.TracedActionAsync(next());