| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| github.com/openzipkin/zipkin-go | Package zipkin implements a native Zipkin instrumentation library for Go. |
| github.com/openzipkin/zipkin-go/model | Package model contains the Zipkin V2 model which is used by the Zipkin Go tracer implementation. |
| github.com/openzipkin/zipkin-go/propagation/b3 | Package b3 implements serialization and deserialization logic for Zipkin B3 Headers. |
| google.golang.org/grpc/codes | Package codes defines the canonical error codes used by gRPC. |
| google.golang.org/grpc/metadata | Package metadata define the structure of the metadata supported by gRPC library. |
| google.golang.org/grpc/stats | Package stats is for collecting and reporting various network and RPC stats. |
| google.golang.org/grpc/status | Package status implements errors returned by gRPC. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |