Examples of org.openqa.jetty.http.InclusiveByteRange

org.openqa.jetty.http.InclusiveByteRange

Byte range inclusive of end points.

 parses the following types of byte ranges: bytes=100-499 bytes=-300 bytes=100- bytes=1-2,2-3,6-,-2 given an entity length, converts range to string bytes 100-499/500

Based on RFC2616 3.12, 14.16, 14.35.1, 14.35.2 @version $version$ @author Helmut Hissen

        
        //  if there is only a single valid range (must be satisfiable 
        //  since were here now), send that range with a 216 response
        if ( ranges.size()== 1)
        {
            InclusiveByteRange singleSatisfiableRange =
                (InclusiveByteRange)ranges.get(0);
            if(log.isDebugEnabled())log.debug("single satisfiable range: " + singleSatisfiableRange);
            long singleLength = singleSatisfiableRange.getSize(resLength);
            writeHeaders(response,resource,singleLength);
            response.setStatus(HttpResponse.__206_Partial_Content);
            response.setReason((String)HttpResponse.__statusMsg
                               .get(TypeUtil.newInteger(HttpResponse.__206_Partial_Content)));
            response.setField(HttpFields.__ContentRange, 
                              singleSatisfiableRange.toHeaderRangeString(resLength));
            OutputStream out = response.getOutputStream();
            resource.writeTo(out,
                             singleSatisfiableRange.getFirst(resLength), 
                             singleLength);
            request.setHandled(true);
            return;
        }


        
        //  multiple non-overlapping valid ranges cause a multipart
        //  216 response which does not require an overall 
        //  content-length header
        //
        ResourceCache.ResourceMetaData metaData =
            (ResourceCache.ResourceMetaData)resource.getAssociate();
        String encoding = metaData.getMimeType();
        MultiPartResponse multi = new MultiPartResponse(response);
        response.setStatus(HttpResponse.__206_Partial_Content);
        response.setReason((String)HttpResponse.__statusMsg
                           .get(TypeUtil.newInteger(HttpResponse.__206_Partial_Content)));


  // If the request has a "Request-Range" header then we need to
  // send an old style multipart/x-byteranges Content-Type. This
  // keeps Netscape and acrobat happy. This is what Apache does.
  String ctp;
  if (request.containsField(HttpFields.__RequestRange))
      ctp = "multipart/x-byteranges; boundary=";
  else
      ctp = "multipart/byteranges; boundary=";
  response.setContentType(ctp+multi.getBoundary());


        InputStream in=(resource instanceof CachedResource)
            ?null:resource.getInputStream();
        OutputStream out = response.getOutputStream();
        long pos=0;
            
        for (int i=0;i<ranges.size();i++)
        {
            InclusiveByteRange ibr = (InclusiveByteRange) ranges.get(i);
            String header=HttpFields.__ContentRange+": "+
                ibr.toHeaderRangeString(resLength);
            if(log.isDebugEnabled())log.debug("multi range: "+encoding+" "+header);
            multi.startPart(encoding,new String[]{header});


            long start=ibr.getFirst(resLength);
            long size=ibr.getSize(resLength);
            if (in!=null)
            {
                // Handle non cached resource
                if (start<pos)
                {

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        // if there is only a single valid range (must be satisfiable
        // since were here now), send that range with a 216 response
        if (ranges.size() == 1)
        {
            InclusiveByteRange singleSatisfiableRange = (InclusiveByteRange) ranges.get(0);
            long singleLength = singleSatisfiableRange.getSize(resLength);
            writeHeaders(response, resource, singleLength);
            response.setStatus(HttpResponse.__206_Partial_Content);
            response.setHeader(HttpFields.__ContentRange, singleSatisfiableRange.toHeaderRangeString(resLength));
            resource.writeTo(out, singleSatisfiableRange.getFirst(resLength), singleLength);
            return;
        }


        // multiple non-overlapping valid ranges cause a multipart
        // 216 response which does not require an overall
        // content-length header
        //
        writeHeaders(response, resource, -1);
        ResourceCache.ResourceMetaData metaData = _httpContext.getResourceMetaData(resource);
        String encoding = metaData.getMimeType();
        MultiPartResponse multi = new MultiPartResponse(response.getOutputStream());
        response.setStatus(HttpResponse.__206_Partial_Content);


        // If the request has a "Request-Range" header then we need to
        // send an old style multipart/x-byteranges Content-Type. This
        // keeps Netscape and acrobat happy. This is what Apache does.
        String ctp;
        if (request.getHeader(HttpFields.__RequestRange) != null)
            ctp = "multipart/x-byteranges; boundary=";
        else
            ctp = "multipart/byteranges; boundary=";
        response.setContentType(ctp + multi.getBoundary());


        InputStream in = (resource instanceof CachedResource) ? null : resource.getInputStream();
        long pos = 0;


        for (int i = 0; i < ranges.size(); i++)
        {
            InclusiveByteRange ibr = (InclusiveByteRange) ranges.get(i);
            String header = HttpFields.__ContentRange + ": " + ibr.toHeaderRangeString(resLength);
            multi.startPart(encoding, new String[]
            { header});


            long start = ibr.getFirst(resLength);
            long size = ibr.getSize(resLength);
            if (in != null)
            {
                // Handle non cached resource
                if (start < pos)
                {

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