Merge branch 'main' of github.com:go-kratos/kratos into main

4 years ago · 283313c2a1
parent 1ee7e70939 db2b8bcba0
commit 283313c2a1
1 changed files with 4 additions and 0 deletions
--- a/middleware/tracing/tracing.go
+++ b/middleware/tracing/tracing.go
@ -104,6 +104,10 @@ func Client(opts ...Option) middleware.Middleware {
 				if md, ok := metadata.FromOutgoingContext(ctx); ok {
 					carrier = opentracing.HTTPHeadersCarrier(md)
 					ctx = metadata.NewOutgoingContext(ctx, md)
+				} else {
+					md = metadata.Pairs()
+					carrier = opentracing.HTTPHeadersCarrier(md)
+					ctx = metadata.NewOutgoingContext(ctx, md)
 				}
 			}
 			span := options.tracer.StartSpan(