Why stub and skeleton are needed in remote procedure calls?

The stub hides the serialization of parameters and the network-level communication in order to present a simple invocation mechanism to the caller. The skeleton is responsible for dispatching the call to the actual remote object implementation.

What are the functions of server and client stubs?

Client stubs convert parameters used in function calls and reconvert the result obtained from the server after function execution. Server stubs, on the other hand, reconvert parameters passed by clients and convert results back after function execution. Stubs are generated either manually or automatically.

What is a stub How are stubs generated explain how the use of stubs helps in making an RPC mechanism transparent?

RPC mechanism uses the concepts of stubs to achieve the goal of semantic transparency. Stubs provide a local procedure call abstraction by concealing the underlying RPC mechanism. A separate stub procedure is associated with both the client and server processes.

How do you remote clients issue remote procedure calls to request service from server systems?

How does RPC work?

1. The client calls the client stub.
2. The client stub packs the procedure parameters into a message and makes a system call to send the message.
3. The client’s local OS sends the message from the client machine to the remote server machine.
4. The server OS passes the incoming packets to the server stub.

What is server stub?

The server stub provides surrogate entry points on the server for each of the operations defined in the input IDL file. When a server stub routine is invoked by the RPC run-time library, it performs the following functions: Unmarshals input arguments (unpacks the arguments from their transmitted formats).

What are the roles of stub and skeleton?

The Stub is the class that implements the remote interface. It serves as a client-side placeholder for the remote object. The stub communicates with the server-side skeleton. The skeleton is the stub’s counterpart on server-side.

What are server stubs?

How remote procedure call RPC helps in establishing communication connection between client and server?

A remote procedure call is an interprocess communication technique that is used for client-server based applications. It is also known as a subroutine call or a function call. A client has a request message that the RPC translates and sends to the server. The parameters are removed from the message by the server stub.

What is client stub role?

A client stub is responsible for conversion (marshalling) of parameters used in a function call and deconversion of results passed from the server after execution of the function. It uses an interface description language (IDL) to define the interface between client and server.

What is RPC and how it useful for the communication B W client and server in the network?

RPC method helps clients to communicate with servers by the conventional use of procedure calls in high-level languages. RPC supports process and thread-oriented models. RPC makes the internal message passing mechanism hidden from the user. The effort needs to re-write and re-develop the code is minimum.

What are the responsibilities of a client stub?

A client stub is responsible for conversion (marshalling) of parameters used in a function call and deconversion of results passed from the server after execution of the function.