VerSys_P2PProjekt

3 Subproject Structural P2P TCP-Protocl

Message Format

@Request :: ctrl = Command (String) :: information = IP@Port (String) :: payload = A string of all File names. Each File name split with "\n" (String)

Example: ctrl = "AddRessource" information = "127.0.0.1@3534" payload = "mypicture.jpg\nmytext.tex"

@Response :: ctrl = "Server response" (String) :: information = Success message or not Success message (String) :: payload = 1. A string of all File names and IP@port. Each File name split with "\n". File name and IP@port split with "#"(String for GetRessource and ListRessources) besser Idee?

Example: ctrl = "Server response" information = "AddRessource is successful" payload = "mypicture.jpg#127.0.0.1@3534\nmytext.tex#127.0.1.1@3345"

// alte version //@Request :: Command / Request or Offer // :: [Ressource]@[Address] / What is requested/offered //Example: // String s = Command@picture.png@IP:Port //@Response :: [List] / Data returned by SuperServer //Example:

@Command :: [Abstract Object over List of Commands] AddRessource(); GetRessource(); DetachRessouce(); ListRessources(); Serve();

SuperServer

DHT-Distributer, notwendig als /root, shutdown => Aus

DHT.list

Key:Value(=Object)

-> receiveRequest(Request r);
-->> addRessource();	// Seeder meldet an
	updateDHT();	
-->> getRessource();	// Lecher Request specific file
	fetchFromDHT();
-->> detachRessource;	// Seeder meldet ab
	updateDHT();
-->> listRessources();	// Leecher request offered files
	listDHTRessouces();

LeecherClient

Nur Requests/Downloads/Beziehen von Ressourcen

-> sendRequest(Request r);
	receive();

SeederClient

Server der sich beim SuperServer anmeldet mit

• Addresse
• Ressourcen

-> sendRequest(Request r);
	serve();