Interview Questions.

Question 1. What Is Xmlrpc++?

Answer :

XmlRpc++ is a C++ implementation of the XML-RPC protocol.

Question 2. What Is Xml-rpc?

Answer :

The XML-RPC protocol became designed to make remote system calls (RPCs) clean: it encodes information in a easy XML layout and makes use of HTTP for communique. XML-RPC is intended for use to enforce internet offerings and disbursed programs. Check out XML-RPC for Newbies.

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Question three. What Other Xml-rpc Implementations Exist?

Answer :

XML-RPC implementations 

Question four. Why Do We Need Another Xml-rpc Implementation (mainly Xmlrpc++)?

Answer :

XmlRpc++ is designed to make it smooth to contain XML-RPC customer and server support into C++ applications. It is written in portable, extendable C++. No different libraries are required, other than your device's socket libraries. Simple XML parsing and HTTP assist are built in. It is straightforward to construct and has a small API. There is no less complicated way to add far off technique call support to a C++ software that I recognize of. 

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Question 5. Why Not Use Soap (or Dce Rpc, Onc Rpc, Corba, Dcom, ...)?

Answer :

XML-RPC is simple, unfastened, and fast enough for my purposes. Use the device that first-class solves your problem. 

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Question 6. What Is An Xml-rpc Server (customer)?

Answer :

An XML-RPC server has one or extra techniques (or methods) registered, and makes the ones procedures available to XML-RPC clients over a community (LAN or Internet). An XML-RPC client calls one or greater far off strategies furnished by using an XML-RPC server, and gets a end result, much like calling a nearby process (feature, approach, and so on). Arguments and consequences are transformed to an XML format for switch throughout the network. 

Question 7. How Do You Use Xmlrpc++ As An Xml-rpc Server?

Answer :

Here is an example of a server (taken from the document test/HelloServer.Cpp inside the XmlRpc++ distribution) that registers a unmarried far off manner named Hello and listens on a port for calls to that system:

#consist of "XmlRpc.H"

the use of namespace XmlRpc;

// The server

XmlRpcServer s;

// The Hello method. No arguments, end result is "Hello".

Magnificence Hello : public XmlRpcServerMethod

public:

  Hello(XmlRpcServer* s) : XmlRpcServerMethod("Hello", s) 

  void execute(XmlRpcValue& params, XmlRpcValue& end result)

  

    end result = "Hello";

  

 good day(&s);    // This constructor registers the approach with the server

// The port to use

const int PORT = 8080;

int important(int argc, char* argv[]) 

  // Create the server socket on the desired port

  s.BindAndListen(PORT);

  // Wait for requests and system indefinitely (Ctrl-C to exit)

  s.Work(-1.0);

  return zero;

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Question eight. How Does Xml-rpc.Net Represent Xml-rpc Requests And Responses?

Answer :

XML-RPC.NET represents an XML-RPC endpoint as a .NET interface whose methods map onto the corresponding XML-RPC strategies.

For instance:

the usage of CookComputing.XmlRpc;

public struct SumAndDiffValue 

  public int sum; 

  public int difference; 

[XmlRpcUrl("http://www.Wisdomjobs.Com/sumAndDiff.Rem")] 

public interface ISumAndDiff

 

  [XmlRpcMethod] 

  SumAndDiffValue SumAndDifference(int x, int y);

 

A server implementation implements these methods. A consumer implementation routinely generates a proxy magnificence which derives from the interface.

Question 9. What If The Xml-rpc Struct Member Name Is Not Valid In .Internet?

Answer :

In some instances the call of a member in an XML-RPC struct is probably invalid within the .NET programming language being used. To deal with this the XmlRpcMember attribute is to be had. This lets in an XML-RPC member call to be mapped to and from a exclusive .NET name.

For instance:

public struct SumAndDiffValue

 

  [XmlRpcMember("sample.Sum")] 

  public int sum; 

  [XmlRpcMember("sample.Difference")] 

  public int difference; 

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Question 10. How Are Xml-rpc Arrays Represented As .Net Types?

Answer :

Where feasible XML-RPC.NET maps XML-RPC arrays onto arrays of .NET sorts. Where this isn't feasible, as an instance in which the participants of the XML-RPC array are not of the identical kind, the mapping is to an instance of System.Object[].

XML-RPC.NET does no longer aid "jagged" arrays - arrays of arrays - due to the fact those are not CLS compliant.

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Question eleven. What If The Xml-rpc Method Name Is Not Valid In My Programming Language?

Answer :

Sometimes the XML-RPC method call cannot be used as a way name within the proxy elegance. For instance, it's far not unusual practice for XML-RPC technique names to have the shape namespace.Methodname, such as pattern.SumAndDifference In these instances a exclusive constructor is used for the XmlRpcMethod characteristic, taking a string which specifies the XML-RPC method name.

For instance:

[XmlRpcUrl("http://www.Wisdomjobs.Com/sumAndDiff.Rem")] 

public interface ISumAndDiff : IXmlRpcProxy

 

  [XmlRpcMethod("sample.SumAndDifference")]  

  SumAndDiffValue SumAndDifference(int x, int y);

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Question 12. How Do I Supply Authentication Credentials?

Answer :

Proxy classes are derived from IXmlRpcProxy and so inherit a Credentials assets. This is used wherein the XML-RPC server authenticates the caller. The property is used in precisely the equal way because the equal assets of the System.Net.WebRequest magnificence.

For example:

ISumAndDiff proxy = (ISumAndDiff)XmlRpcProxyGen.Create(typeof(ISumAndDiff));

proxy.Credentials = new NetworkCredential("jsmith","password");

SumAndDiffValue ret = proxy.SumAndDifference(2, three);

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Question thirteen. How Do I Send Cookies With A Request?

Answer :

Proxy instructions are derived from IXmlRpcProxy and so inherit a CookieContainer belongings of kind System.Net.CookieContainer, like the corresponding belongings of System.Net.HttpWebRequest. Instances of System.Net.Cookie brought to the container will sent with the HTTP request.

For instance:

ISumAndDiff proxy = (ISumAndDiff)XmlRpcProxyGen.Create(typeof(ISumAndDiff));

Cookie cookie = new Cookie("foo", "bar", "/", "www.Wisdomjobs.Com")

proxy.CookieContainer.Add(cookie);

SumAndDiffValue ret = proxy->SumAndDifference(2, 3);

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