c# - How to create a host application to receive data and send a response back -

i new programming , have given project have no idea how it.

i have write host application.the following requirement:

develop cxml webservice host testing cxml posts xyz.net .

the application should read stream of data,validate against dtd. store in corresponding tables , send response client.

this should example. create console application, , set startup object selfhost. run application , wcf service should available @ url stated code : http://localhost:1234/hello"

[servicecontract()] public interface iindexer {     [operationcontract]     bool test();  }  public class indexer : iindexer {     public bool test()     {         return true;     } }       class selfhost     {         static void main(string[] args)         {             uri baseaddress = new uri("http://localhost:1234/hello");              // create servicehost.             using (servicehost host = new servicehost(typeof(indexer), baseaddress))             {                 // enable metadata publishing.                 servicemetadatabehavior smb = new servicemetadatabehavior();                 smb.httpgetenabled = true;                 smb.metadataexporter.policyversion = policyversion.policy15;                 host.description.behaviors.add(smb);                  // open servicehost start listening messages. since                 // no endpoints explicitly configured, runtime create                 // 1 endpoint per base address each service contract implemented                 // service.                 host.open();                  console.writeline("the service ready @ {0}", baseaddress);                 console.writeline("press q , <enter> stop service.");                 console.readline();                   // close servicehost.                 host.close();             }         }     }