Blast sends a blast of calls to the client and verifies that they do not err.

Call sends an echo request to the client.

CallUntilSuccess sends a request until it succeeds.

CreateAndStartClientDispatcher creates and starts a dispatcher with a single outbound for the "echo" method.

CreateClientDispatcher creates a dispatcher with a single outbound for the "echo" method.

Register registers an echo procedure handler on a dispatcher.

Timeout sends a request to the client, which will timeout on the server.

ClientName is the name of fake client in dispatcher.

ServiceName is the name of fake service in dispatcher.

TransportSpec specifies how to create test clients and servers for a transport.