docker run --rm -p 6831:6831/udp -p 6832:6832/udp -p 16686:16686 jaegertracing/all-in-one:1.7 --log-level=debug
Access from browser here:
go run app1.go
go run app2.go
go run app3.go
Then access endpoint from app1 http://localhost:8081/app or http://localhost:8081/app1to3
See the tracker on Jaeger.