A gRPC channel specifies the port for connecting to the gRPC server on Integration Server as well as the authentication credentials used by the gRPC server for TLS support. The port in the gRPC channel is an HTTP/2 port that is managed by the gRPC server embedded in Integration Server. Because each gRPC descriptor must be associate with an HTTP/2 port, a gRPC channel must exist and be enabled before you can create the gRPC provider descriptor.

A gRPC client that wants to execute a gRPC service on Integration Server must have the host and port information for a channel to establish a connection to the gRPC server. The host to which the gRPC client needs to connect to when sending a request is the host name of the machine on which Integration Server resides.

Integration Server includes a predefined gRPC channel named GRPCDefault. This is the only supported gRPC channel. By default, the channel uses the port 50051. However, you can configure the channel to specify any unused port for the machine on which Integration Server resides.