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package org.apache.coyote.http11;
Output filter.

Remy Maucherat
public interface OutputFilter extends OutputBuffer {

Write some bytes.

number of bytes written by the filter
    public int doWrite(ByteChunk chunkResponse unused)
        throws IOException;

Some filters need additional parameters from the response. All the necessary reading can occur in that method, as this method is called after the response header processing is complete.
    public void setResponse(Response response);

Make the filter ready to process the next request.
    public void recycle();

Get the name of the encoding handled by this filter.
    public ByteChunk getEncodingName();

Set the next buffer in the filter pipeline.
    public void setBuffer(OutputBuffer buffer);

End the current request. It is acceptable to write extra bytes using buffer.doWrite during the execution of this method.

Should return 0 unless the filter does some content length delimitation, in which case the number is the amount of extra bytes or missing bytes, which would indicate an error. Note: It is recommended that extra bytes be swallowed by the filter.
    public long end()
        throws IOException;
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