Imports gopkg.in/DataDog/dd-trace-go.v1/contrib/internal/httputil gopkg.in/DataDog/dd-trace-go.v1/ddtrace gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer Standard library imports errors fmt net/http os strconv