Send content of file over tcp socket

[Mads Nielsen]

Hello

First of all thanks to all for helping out with this thread: Speeding up BufferedInputStream

The code i have so far is just copying a file. I want to read the content of the file to a variable and send it over a socket.

import java.io.*;
import java.math.BigInteger;
import java.security.*;

public class backup_client {
	
	//Read file index
	public static String ReadFileIndex(String file) throws IOException {
		BufferedReader in = null;
		try {
			in = new BufferedReader(new FileReader(file));
		} catch (FileNotFoundException e1) {
			e1.printStackTrace();
		}
		String data = in.readLine();
		try {
			in.close();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return data;
	}
	
	public static String md5() throws NoSuchAlgorithmException
	{
		String plaintext = "asd";
		
		MessageDigest m = MessageDigest.getInstance("MD5"); 
		m.reset(); 
		m.update(plaintext.getBytes()); 
		byte[] digest = m.digest(); 
		BigInteger bigInt = new BigInteger(1,digest); 
		String hash = bigInt.toString(16); 
		// Now we need to zero pad it if you actually want the full 32 chars. 
		while(hash.length() < 32 ){ 
		  hash = "0"+hash; 
		}
		return hash;
	}
	
	public static void makeBackup(String file) throws IOException, NoSuchAlgorithmException {
		File fileHandle = new File(file);
		long length = fileHandle.length();
		
		/*DEBUG*/
		//System.out.print(md5()+"\n");
		//System.out.print(length+"\n");
		//System.out.print(file+"\n");
		
		// Instantiating a new input stream
		DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(file)));
		// Instantiating a new output stream
		OutputStream output = new FileOutputStream("2" + file);

		byte[] buffer = new byte[1024];
		int bytesRead;
		while ((bytesRead = in.read(buffer)) != -1) {
		    output.write(buffer, 0, bytesRead);
		}

		// Closing the FileOutputStream handle
		output.close();
	}

	public static void main(String[] args) throws IOException, NoSuchAlgorithmException {
		makeBackup("geoApp.psd");
		//System.out.print(ReadFileIndex("index.conf") + "\n");
	}
}

So insted of this:

while ((bytesRead = in.read(buffer)) != -1) {
    output.write(buffer, 0, bytesRead);
}

I want to put the content of the file into a variable or array, so i can transfer the file over a socket.

Anyone ?

Kind regards Mads

[Paul Clapham]

Mads Nielsen wrote:I want to put the content of the file into a variable or array, so i can transfer the file over a socket.

I think I should mention that you don't actually need to put the contents of the file into memory to transfer it over a socket. In fact I'm surprised you suggest that, given that you posted some code which works. Just change the part which writes to a FileOutputStream to write to the socket's output stream instead.

(And get rid of the DataInputStream, you don't need it and it just serves to confuse the reader.)