CODEWITHSUNDEEP
javaionetty
Usha
Usha

Reputation: 384

Netty ClosedChannelException

I am new to netty and I followed this example to write a static file server using netty. But whenever the server serves a large js file. It runs into ClosedChannelException.

The following is my code where I write chunkedFile as http response. When a large js file is being served I get closedChannelException and the raf file is also closed.

Could you help me figure out what I have done wrong here? Also, is there a simple tutorial where I get understand the basic flow of control in netty?

     // Write the content.
      ChannelFuture writeFuture = null;
    try
    {
        long fileLength = raf.length();
        HttpResponse response = new DefaultHttpResponse(
            HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
        response.setHeader(HttpHeaders.Names.CONTENT_LENGTH, fileLength);
        Channel c = ctx.getChannel();

        // Write the initial line and the header.
        c.write(response);

        writeFuture = c.write(new ChunkedFile(raf, 0, fileLength, 8192));
    }
    finally
    {
        raf.close();
        if (writeFuture != null)
            writeFuture.addListener(ChannelFutureListener.CLOSE);
    }
}

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Upvotes: 1

Views: 1640

Answers (1)

Norman Maurer
Norman Maurer

Reputation: 23557

Calling raf.close() in the finally block is wrong as it may not have it written yet. In fact netty will take care to close it after the write is complete.

Upvotes: 2

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