import java.io.*;
import java.util.*;
import java.net.*;

class HttpReader {
    public HttpReader(String urlString) throws IOException {
	lr = new LinkReader(urlString);
    }

    // return the next HTTP HREF in complete URL form
	public String readLine() throws IOException {
	    String line = lr.readLine(); 
	    while (line!=null && line.toUpperCase().indexOf("HTTP:")==-1)
		line = lr.readLine();
	    return line;
	}

    private LinkReader lr;
}