flavien/Projet_JAVA_P2P_STRI2A
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Add multiple servers choice, but dl only from one
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Je suis en train de faire en sorte qu’on télécharge depuis plusieurs
This commit is contained in:
Louis Royer 2020-03-11 20:19:18 +01:00
parent 11e965acc8
commit f88f5b1d40
5 changed files with 166 additions and 86 deletions
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43
src/clientP2P/ClientManagementTCP.java
View File

@ -33,6 +33,8 @@ import protocolP2P.HashRequest;
import protocolP2P.HashResponse;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import tools.HostItem;
import java.util.List;
/** Implementation of P2P-JAVA-PROJECT CLIENT
* @author Louis Royer
@ -42,10 +44,7 @@ import java.security.NoSuchAlgorithmException;
*/
public class ClientManagementTCP implements Runnable {
private String baseDirectory;
private int TCPPort;
private String host;
private Socket socket;
private List<HostItem> hostList;
/** Constructor for TCP implementation, with baseDirectory and TCPPort parameters.
@ -53,22 +52,9 @@ public class ClientManagementTCP implements Runnable {
* @param host hostname of the server
* @param TCPPort the server will listen on this port
*/
public ClientManagementTCP(String baseDirectory, String host, int TCPPort) {
public ClientManagementTCP(String baseDirectory, List<HostItem> hostList) {
this.baseDirectory = baseDirectory;
this.host = host;
this.TCPPort = TCPPort;
try {
socket = new Socket(InetAddress.getByName(host), TCPPort);
} catch (SocketException e) {
System.err.println("Error: No TCP socket available.");
System.exit(-1);
} catch (UnknownHostException e) {
System.err.println("Error: Unknown host.");
System.exit(-1);
} catch (IOException e) {
System.err.println("Error: Cannot create TCP socket");
System.exit(-1);
}
this.hostList = hostList;
}
/** Implementation of Runnable
@ -114,11 +100,8 @@ public class ClientManagementTCP implements Runnable {
} catch (EmptyFile e) {
System.err.println("Error: File is empty");
} finally {
try {
System.err.println("Closing socket");
socket.close();
} catch (IOException e2) {
System.err.println("Error: cannot close socket");
for (HostItem h: hostList) {
h.closeTCPSocket();
}
}
}
@ -145,7 +128,7 @@ public class ClientManagementTCP implements Runnable {
HashAlgorithm[] hashesAlgo = new HashAlgorithm[1];
hashesAlgo[0] = HashAlgorithm.SHA512;
ProtocolP2PPacketTCP d = new ProtocolP2PPacketTCP((Payload) new HashRequest(filename, hashesAlgo));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getTCPSocket());
try {
Payload pHash = d.receiveResponse().getPayload();
assert pHash instanceof HashResponse : "This payload must be instance of HashResponse";
@ -164,7 +147,7 @@ public class ClientManagementTCP implements Runnable {
}
d = new ProtocolP2PPacketTCP((Payload) new LoadRequest(filename, 0, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getTCPSocket());
boolean fileFullyWritten = false;
long offset = 0;
do {
@ -194,7 +177,7 @@ public class ClientManagementTCP implements Runnable {
if (offset != fp.getTotalSize()) {
System.err.println("Sending following request with offset: " + offset + " maxpartialsize: " + MAX_PARTIAL_SIZE);
d = new ProtocolP2PPacketTCP((Payload) new LoadRequest(filename, offset, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getTCPSocket());
} else {
fileFullyWritten = true;
}
@ -214,7 +197,7 @@ public class ClientManagementTCP implements Runnable {
} else {
// next partialContentRequest
d = new ProtocolP2PPacketTCP((Payload) new LoadRequest(filename, offset, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getTCPSocket());
}
} else {
@ -242,7 +225,7 @@ public class ClientManagementTCP implements Runnable {
System.err.println("");
throw new InternalError();
}
socket.close();
hostList.get(0).closeTCPSocket();
}
/** list server’s directory content
@ -262,7 +245,7 @@ public class ClientManagementTCP implements Runnable {
*/
private String[] listDirectory() throws EmptyDirectory, InternalError, UnknownHostException, SocketClosed, IOException, TransmissionError, ProtocolError, VersionError, SizeError, InternalRemoteError, ProtocolRemoteError, VersionRemoteError {
ProtocolP2PPacketTCP d = new ProtocolP2PPacketTCP(new Payload(RequestResponseCode.LIST_REQUEST));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getTCPSocket());
try {
Payload p = d.receiveResponse().getPayload();
assert p instanceof FileList : "This payload must be instance of Filelist";

37
src/clientP2P/ClientManagementUDP.java
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@ -12,15 +12,17 @@ import remoteException.ProtocolRemoteError;
import remoteException.VersionRemoteError;
import java.net.UnknownHostException;
import java.util.Scanner;
import java.net.InetAddress;
//import java.net.InetAddress;
import java.net.DatagramSocket;
import java.net.SocketException;
//import java.net.SocketException;
import java.io.IOException;
import java.nio.file.Files;
import java.io.File;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.Arrays;
import java.util.List;
import tools.HostItem;
import protocolP2P.ProtocolP2PPacketUDP;
import protocolP2P.Payload;
import protocolP2P.RequestResponseCode;
@ -41,31 +43,16 @@ import java.security.NoSuchAlgorithmException;
*/
public class ClientManagementUDP implements Runnable {
private String baseDirectory;
private int UDPPort;
private String host;
private DatagramSocket socket;
private List<HostItem> hostList;
/** Constructor for UDP implementation, with baseDirectory and UDPPort parameters.
* @param baseDirectory the root directory where files are stored
* @param host hostname of the server
* @param UDPPort the server will listen on this port
*/
public ClientManagementUDP(String baseDirectory, String host, int UDPPort) {
public ClientManagementUDP(String baseDirectory, List<HostItem> hostList) {
this.baseDirectory = baseDirectory;
this.host = host;
this.UDPPort = UDPPort;
try {
socket = new DatagramSocket();
socket.connect(InetAddress.getByName(host), UDPPort);
} catch (SocketException e) {
System.err.println("Error: No UDP socket available.");
System.exit(-1);
} catch (UnknownHostException e) {
System.err.println("Error: Unknown host.");
System.exit(-1);
}
this.hostList = hostList;
}
/** Implementation of Runnable
@ -133,7 +120,7 @@ public class ClientManagementUDP implements Runnable {
HashAlgorithm[] hashesAlgo = new HashAlgorithm[1];
hashesAlgo[0] = HashAlgorithm.SHA512;
ProtocolP2PPacketUDP d = new ProtocolP2PPacketUDP((Payload) new HashRequest(filename, hashesAlgo));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getUDPSocket());
try {
Payload pHash = d.receiveResponse().getPayload();
assert pHash instanceof HashResponse : "This payload must be instance of HashResponse";
@ -152,7 +139,7 @@ public class ClientManagementUDP implements Runnable {
}
d = new ProtocolP2PPacketUDP((Payload) new LoadRequest(filename, 0, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getUDPSocket());
boolean fileFullyWritten = false;
long offset = 0;
do {
@ -182,7 +169,7 @@ public class ClientManagementUDP implements Runnable {
if (offset != fp.getTotalSize()) {
System.err.println("Sending following request with offset: " + offset + " maxpartialsize: " + MAX_PARTIAL_SIZE);
d = new ProtocolP2PPacketUDP((Payload) new LoadRequest(filename, offset, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getUDPSocket());
} else {
fileFullyWritten = true;
}
@ -202,7 +189,7 @@ public class ClientManagementUDP implements Runnable {
} else {
// next partialContentRequest
d = new ProtocolP2PPacketUDP((Payload) new LoadRequest(filename, offset, MAX_PARTIAL_SIZE));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getUDPSocket());
}
} else {
@ -248,7 +235,7 @@ public class ClientManagementUDP implements Runnable {
*/
private String[] listDirectory() throws EmptyDirectory, InternalError, UnknownHostException, IOException, TransmissionError, ProtocolError, VersionError, SizeError, InternalRemoteError, ProtocolRemoteError, VersionRemoteError {
ProtocolP2PPacketUDP d = new ProtocolP2PPacketUDP(new Payload(RequestResponseCode.LIST_REQUEST));
d.sendRequest((Object)socket);
d.sendRequest((Object)hostList.get(0).getUDPSocket());
try {
Payload p = d.receiveResponse().getPayload();
assert p instanceof FileList : "This payload must be instance of Filelist";

12
src/clientP2P/ClientP2P.java
View File

@ -3,17 +3,25 @@ import clientP2P.ClientManagementUDP;
import clientP2P.ClientManagementTCP;
import tools.Directories;
import java.util.Scanner;
import java.util.List;
import tools.HostItem;
import tools.HostList;
public class ClientP2P {
private String host;
private int port;
private Directories directories;
private List<HostItem> hostList;
private String parts = ".parts";
public ClientP2P() {
directories = new Directories("P2P_JAVA_PROJECT_CLIENT");
directories.createSubdir(parts);
host = "localhost";
port = 40001;
System.out.println("Client will try to contact server at " + host + " on port " + port + ". It will save files in " + directories.getDataHomeDirectory());
directories.askOpenDataHomeDirectory(null);
System.out.println("Please enter list of servers to use; first one will be used to ask list of files");
hostList = HostList.getServList();
}
public static void main(String [] args) {
@ -27,7 +35,7 @@ public class ClientP2P {
case "udp":
case "2" :
System.out.println("Starting with UDP");
ClientManagementUDP cmudp = new ClientManagementUDP(c.directories.getDataHomeDirectory(), c.host, c.port);
ClientManagementUDP cmudp = new ClientManagementUDP(c.directories.getDataHomeDirectory(), c.hostList);
t = new Thread(cmudp);
break;
case "TCP":
@ -35,7 +43,7 @@ public class ClientP2P {
case "1":
default:
System.out.println("Starting with TCP");
ClientManagementTCP cmtcp = new ClientManagementTCP(c.directories.getDataHomeDirectory(), c.host, c.port);
ClientManagementTCP cmtcp = new ClientManagementTCP(c.directories.getDataHomeDirectory(), c.hostList);
t = new Thread(cmtcp);
break;
}

84
src/tools/HostItem.java Normal file
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@ -0,0 +1,84 @@
package tools;
import java.net.InetAddress;
import java.net.SocketException;
import java.net.Socket;
import java.net.DatagramSocket;
import java.net.UnknownHostException;
import java.io.IOException;
/** Class to store hostnames + ports
*/
public class HostItem {
private String hostname;
private int port;
private Socket tcpSocket;
private DatagramSocket udpSocket;
/** Constructor with hostname and port
* @param hostname Hostname
* @param port Port
*/
public HostItem(String hostname, int port) {
this.port = port;
this.hostname = hostname;
}
/** Get TCP Socket.
* @return TCP Socket
*/
public Socket getTCPSocket() {
if (tcpSocket == null) {
try {
tcpSocket = new Socket(InetAddress.getByName(hostname), port);
} catch (SocketException e) {
System.err.println("Error: No TCP socket available.");
System.exit(-1);
} catch (UnknownHostException e) {
System.err.println("Error: Unknown host.");
System.exit(-1);
} catch (IOException e) {
System.err.println("Error: Cannot create TCP socket");
System.exit(-1);
}
}
return tcpSocket;
}
/** Closes tcp socket
*/
public void closeTCPSocket() {
if (tcpSocket != null) {
try {
tcpSocket.close();
} catch (IOException e2) {
System.err.println("Error: cannot close socket");
}
}
tcpSocket = null;
}
/** Get UDP Socket
* return UDP Socket
*/
public DatagramSocket getUDPSocket() {
if (udpSocket == null) {
try {
udpSocket = new DatagramSocket();
udpSocket.connect(InetAddress.getByName(hostname), port);
} catch (SocketException e) {
System.err.println("Error: No UDP socket available.");
System.exit(-1);
} catch (UnknownHostException e) {
System.err.println("Error: Unknown host.");
System.exit(-1);
}
}
return udpSocket;
}
public void closeUDPSocket() {
if (udpSocket != null) {
udpSocket.close();
}
udpSocket = null;
}
}

76
src/tools/HostList.java
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@ -2,36 +2,54 @@ package tools;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;
import java.util.InputMismatchException;
import tools.HostItem;
public class HostList{
/** Helper to get the server list from the user
* @author Louis Royer
* @author Flavien Haas
* @author JS Auge
* @version 1.0
*/
/**
* Let the user enter all server and puts it in a list
* @return list of servers
/** Helper to get the server list from the user
* @author Louis Royer
* @author Flavien Haas
* @author JS Auge
* @version 1.0
*/
public List<String> getServList(){
List<String> serverList = new ArrayList<String>();
Scanner scanner = new Scanner(System.in);
String servName = "";
do {
System.out.println("Name of the next server: (or \"stop\" when finished)");
servName = scanner.nextLine();
if (servName != "stop"){
serverList.add(servName);
}
} while (servName != "stop");
return serverList;
}
public class HostList {
/**
* Let the user enter all server and puts it in a list
* @return list of servers
*/
public static List<HostItem> getServList() {
List<HostItem> serverList = new ArrayList<HostItem>();
Scanner scanner = new Scanner(System.in);
String servName;
int port = 0;
do {
System.out.println("Enter hostname of next server: (or \"stop\" when finished, default: localhost).");
servName = scanner.nextLine();
if (servName.equals("")) {
servName = "localhost";
}
if (!servName.equals("stop")) {
boolean err = false;
do {
System.out.println("Enter port for this server");
try {
port = scanner.nextInt();
scanner.nextLine();
if (port > 65535 || port <= 0) {
err = true;
System.out.println("Port number must be in 1-65535 range. Try again.");
} else {
err = false;
}
} catch (InputMismatchException e) {
System.out.println("Invalid number. Try again.");
err = true;
}
} while (err);
serverList.add(new HostItem(servName, port));
}
} while (!servName.equals("stop"));
return serverList;
}
}