neembuu.httpserver.Utils.java Source code

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Here is the source code for neembuu.httpserver.Utils.java

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package neembuu.httpserver;

import org.apache.http.Header;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.message.BasicHeader;

/**
 *
 * @author Shashank Tulsyan
 */
public class Utils {

    //    GET /test_videos/BigBuckBunny_320x180.mp4 HTTP/1.1
    //    Host: neembuu.com
    //    User-Agent: VLC/2.1.3 LibVLC/2.1.3
    //    Range: bytes=0-
    //    Connection: close
    //    Icy-MetaData: 1
    //
    //    HTTP/1.1 206 Partial Content
    //    Date: Tue, 08 Jul 2014 12:41:40 GMT
    //    Server: Apache/2.2.3 (CentOS)
    //    Last-Modified: Sun, 23 Mar 2014 16:11:44 GMT
    //    Accept-Ranges: bytes
    //    Content-Length: 64657027
    //    Cache-Control: max-age=2592000
    //    Expires: Thu, 07 Aug 2014 12:41:40 GMT
    //    X-Content-Type-Options: nosniff
    //    Content-Range: bytes 0-64657026/64657027
    //    Connection: close
    //    Content-Type: video/mp4

    //    GET /test_videos/BigBuckBunny_320x180.mp4 HTTP/1.1
    //    Host: neembuu.com
    //    User-Agent: VLC/2.1.3 LibVLC/2.1.3
    //    Range: bytes=64312833-
    //    Connection: close
    //    Icy-MetaData: 1

    //    HTTP/1.1 206 Partial Content
    //    Date: Tue, 08 Jul 2014 12:41:41 GMT
    //    Server: Apache/2.2.3 (CentOS)
    //    Last-Modified: Sun, 23 Mar 2014 16:11:44 GMT
    //    Accept-Ranges: bytes
    //    Content-Length: 344194
    //    Cache-Control: max-age=2592000
    //    Expires: Thu, 07 Aug 2014 12:41:41 GMT
    //    X-Content-Type-Options: nosniff
    //    Content-Range: bytes 64312833-64657026/64657027
    //    Connection: close
    //    Content-Type: video/mp4

    public static long standardOffsetResponse(final HttpRequest request, final HttpResponse response,
            long fileSize) {
        long offset = findOffset(request);
        long contentLength = fileSize - offset;
        System.out.println("offset=" + offset);
        response.addHeader(new BasicHeader("Accept-Ranges", "bytes"));
        response.addHeader(new BasicHeader("Content-Length", Long.toString(contentLength)));
        response.addHeader(
                new BasicHeader("Content-Range", "bytes " + offset + "-" + (fileSize - 1) + "/" + fileSize));
        response.addHeader(new BasicHeader("Connection", "close"));
        //response.setStatusCode(HttpStatus.SC_OK);
        response.setStatusCode(HttpStatus.SC_PARTIAL_CONTENT);
        return offset;
    }

    private static long findOffset(final HttpRequest request) {
        for (Header h : request.getAllHeaders()) {
            if (h.getName().trim().equalsIgnoreCase("Range")) {
                try {
                    String val = h.getValue();
                    int i = 0;
                    SMALL_LOOP: for (; i < val.length(); i++) {
                        if (Character.isDigit(val.charAt(i))) {
                            break SMALL_LOOP;
                        }
                    }
                    val = val.substring(i, val.indexOf('-'));
                    return Long.parseLong(val);
                } catch (Exception a) {
                    a.printStackTrace();
                }
            }
        }
        return 0;
    }
}