Interface ClientTransport

    • Method Detail

      • newStream

        ClientStream newStream​(MethodDescriptor<?,​?> method,
                               Metadata headers,
                               CallOptions callOptions,
                               ClientStreamTracer[] tracers)
        Creates a new stream for sending messages to a remote end-point.

        This method returns immediately and does not wait for any validation of the request. If creation fails for any reason, ClientStreamListener.closed(io.grpc.Status, io.grpc.internal.ClientStreamListener.RpcProgress, io.grpc.Metadata) will be called to provide the error information. Any sent messages for this stream will be buffered until creation has completed (either successfully or unsuccessfully).

        This method is called under the Context of the ClientCall.

        Parameters:
        method - the descriptor of the remote method to be called for this stream.
        headers - to send at the beginning of the call
        callOptions - runtime options of the call
        tracers - a non-empty array of tracers. The last element in it is reserved to be set by the load balancer's pick result and otherwise is a no-op tracer.
        Returns:
        the newly created stream.
      • ping

        void ping​(ClientTransport.PingCallback callback,
                  java.util.concurrent.Executor executor)
        Pings a remote endpoint. When an acknowledgement is received, the given callback will be invoked using the given executor.

        Pings are not necessarily sent to the same endpoint, thus a successful ping only means at least one endpoint responded, but doesn't imply the availability of other endpoints (if there is any).

        This is an optional method. Transports that do not have any mechanism by which to ping the remote endpoint may throw UnsupportedOperationException.