# Example ## HTTP This is a simple example that demonstrates tracing http request from client to server. The example shows key aspects of tracing such as: - Root Span (on Client) - Child Span (on Client) - Child Span from a Remote Parent (on Server) - SpanContext Propagation (from Client to Server) - Span Events - Span Attributes Example uses - open-telemetry SDK as trace instrumentation provider, - httptrace plugin to facilitate tracing http request on client and server - http trace_context propagation to propagate SpanContext on the wire. - stdout exporter to print information about spans in the terminal ### How to run? #### Prequisites - go 1.13 installed - GOPATH is configured. #### 1 Download git repo ``` GO111MODULE="" go get -d go.opentelemetry.io/otel ``` #### 2 Start Server ``` cd $GOPATH/src/go.opentelemetry.io/otel/example/http/ go run ./server/server.go ``` #### 3 Start Client ``` cd $GOPATH/src/go.opentelemetry.io/otel/example/http/ go run ./client/client.go ``` #### 4 Check traces in stdout The spans should be visible in stdout in the order that they were exported.