The hostname example is a Hello World server whose response includes its hostname. It also supports health and reflection services. This makes it a good server to test infrastructure, like load balancing.

The example requires grpc-java to already be built. You are strongly encouraged to check out a git release tag, since there will already be a build of grpc available. Otherwise you must follow COMPILING.

1. Build the hello-world example client. See the examples README

2. Build this server. From the grpc-java/examples/examples-hostname directory:

$ ../gradlew installDist 

This creates the script build/install/hostname-server/bin/hostname-server that runs the example.

To run the hostname example, run:

$ ./build/install/hostname-server/bin/hostname-server 

And in a different terminal window run the hello-world client:

$ ../build/install/examples/bin/hello-world-client 

If you prefer to use Maven:

1. Build the hello-world example client. See the examples README

2. Run in this directory:

$ mvn verify $ # Run the server (from the examples-hostname directory) $ mvn exec:java -Dexec.mainClass=io.grpc.examples.hostname.HostnameServer $ # In another terminal run the client (from the examples directory) $ cd .. $ mvn exec:java -Dexec.mainClass=io.grpc.examples.helloworld.HelloWorldClient 

If you prefer to use Bazel, run from the grpc-java/examples directory:

$ bazel build :hello-world-client example-hostname:hostname-server $ # Run the server $ ./bazel-bin/example-hostname/hostname-server $ # In another terminal run the client $ ./bazel-bin/hello-world-client