Newbie with Sockets. Speed problem

Question

Hi. I am newbie with Sockets. I have read java socket tutorials and wrote these two classes. The client tries to transfer file of 13MB to the server. This is done in internal network. Client and Server use 100Mb network cards. The problem I have is speed of transfer. It takes 4-5 sec to transfer this file.
13MB * 8 / 5sec = 20Mb/s
It seems slow to me considering that network cards are 100Mbit. I would expect to get at least 50-70Mb/s. It is my home network and noone else is using it.
So, what I am doing wrong?
public class Client {
public Client() {
public static void main(String[] args) {
try {
FileInputStream in1 = new FileInputStream("c:\\Documents and Settings\\Pavel\\jbproject\\untitled1\\src\\tryw\\test.txt");
InetAddress addr = InetAddress.getByName("server");
Socket s = new Socket(addr, 5000);
OutputStream out = s.getOutputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
System.out.println((new Date(System.currentTimeMillis())).toString());
byte[] buffer1 = new byte[1024];
int g;
while ((g=in1.read(buffer1))!=-1 ) {
out.write(buffer1);
System.out.println((new Date(System.currentTimeMillis())).toString());
s.close();
System.out.println((new Date(System.currentTimeMillis())).toString());
}catch(Exception e){System.out.println(e.getMessage()); }}}
public class Server {
public Server() {
public static void main(String[] args) {
ServerSocket s = null;
try {
s = new ServerSocket(5000);
while (true) {
StringBuffer buffer = new StringBuffer();
// Wait for a connection request from a client
System.out.println("Waiting");
Socket clientConn = s.accept();
InputStream in = clientConn.getInputStream();
OutputStream out = clientConn.getOutputStream();
PrintWriter outp = new PrintWriter(out, true);
BufferedReader inp = new BufferedReader(new InputStreamReader(in));
String inputLine = null;
Date date = new Date(System.currentTimeMillis());
System.out.print(date.toString());
while ((inputLine = inp.readLine()) != null) {
buffer.append(inputLine);
if (inputLine.equals("Bye."))
break;
Date date1 = new Date(System.currentTimeMillis());
System.out.println(date1.toString());
System.out.println(buffer.length());
}catch(Exception e){System.out.println(e.toString());try {s.close();}catch(Exception he) {}}}}

Answer 1

you probably want the buffering to occur under the PrintWriter, not the other way around, ie the buffering should be closest to the raw socket.
You can bump up the size of the Buffering in the ctor, that might help.
You can also gulp bigger blocks on the read.