compiler-construction - Unable to run RPC programs using rpcgen

Question

I have just started learning about RPC and the rpcgen compiler. I am using the FreeBSD OS and trying to implement a simple program that prints "Hello World" to the console using RPC. I first created the '.x' file and using rpcgen, obtained the client and server stubs. Also, I am using both server and client code on the same machine for now. The whole code compiles fine but when I run the program like this: "./firsttry localhost", it outputs the following error: "RPC: Program not registered". What am I doing wrong here? Could it be a problem with the code or is my implementation incorrect?

Answer 1

1. 首先，检查是否安装了“rpcbind”，如果没有先安装：

   ~$ sudo apt-get install rpcbind 

2. Then run your server code with superuser permissions as

    ~$ sudo ./firsttry localhost 

3. There won't be any error now.

Note : instead of writing server and client code by yourself, use the strength of rpcgen . While compiling your .x file, try

 ~$ rpcgen -a filename.x 

它将自动生成所有文件。只需进行少量更改（在服务器和客户端代码中）。试试看，省时省力。