Imports github.com/rpcxio/rpcx-examples github.com/smallnest/rpcx/client github.com/smallnest/rpcx/share go.opentelemetry.io/otel go.opentelemetry.io/otel/exporters/stdout/stdouttrace go.opentelemetry.io/otel/propagation go.opentelemetry.io/otel/sdk/trace Standard library imports context flag log