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The size of the image is 3092 bytes meaning the server should send about 6 packets and print "ack received" if the packet was received and acknowledged by the client, but it seems to only be printing it twice.
server code contains
public static void main(String[] args) throws Exception
{
ServerSocket inSocket = new ServerSocket(40075);
System.out.println("made socket");
String clientSentence;
while(true)
{
Socket sSocket = inSocket.accept();
System.out.println("accepted socket");
BufferedReader fromclient = new BufferedReader(new InputStreamReader(sSocket.getInputStream()));
DataOutputStream toClient = new DataOutputStream(sSocket.getOutputStream());
clientSentence = fromclient.readLine();
System.out.println(clientSentence);
File jfile = new File("base.jpg");
if (!jfile.exists() || !jfile.isFile())
{
System.out.println("Not a file");
}
else System.out.println("Is a file");
int filesize = (int)jfile.length();
int left = filesize;
int byteposition = 0;
System.out.println(filesize);
DataInputStream fis = new DataInputStream(new FileInputStream(jfile));
byte[] buffer = new byte[filesize];
while(left > 512)
{
try {
while(fis.read(buffer)!=-1)
{
toClient.write(buffer, byteposition, 512);
}
System.out.println("After writing");
clientSentence = fromclient.readLine();
if (clientSentence.equals("ACK"));
System.out.println("ack received");
}
catch (Exception e){}
byteposition = byteposition + 512;
left = left - 512;
}
}
}
client code contains
System.out.println("pre server socket");
Socket clSocket = new Socket(addr,40075);
System.out.println("post server socket");
DataOutputStream toPserver = new DataOutputStream(clSocket.getOutputStream());
DataInputStream fromPserver = new DataInputStream(clSocket.getInputStream());
toPserver.writeBytes(filereq);
String pReply = fromPserver.readLine();
System.out.println(pReply);
File dlfile = new File("new"+name);
dlfile.createNewFile();
int gotbytes = 0;
DataOutputStream dos = new DataOutputStream(new FileOutputStream(dlfile));
while(gotbytes < 3092)
{
try
{
while(fromPserver.available() > 0)
{
dos.writeByte(fromPserver.readByte());
gotbytes = gotbytes + 1;
}
}
catch (Exception e){}
toPserver.writeBytes("ACK");
}
System.out.println(gotbytes);
clSocket.close();
}
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