Examples of org.apache.http.impl.io.ChunkedInputStream

org.apache.http.impl.io.ChunkedInputStream
3.org/Protocols/rfc2616/rfc2616.txt">RFC 2616, section 3.6.1. It transparently coalesces chunks of a HTTP stream that uses chunked transfer coding. After the stream is read to the end, it provides access to the trailers, if any.
Note that this class NEVER closes the underlying stream, even when close gets called. Instead, it will read until the "end" of its chunking on close, which allows for the seamless execution of subsequent HTTP 1.1 requests, while not requiring the client to remember to read the entire contents of the response.
@author Ortwin Glueck @author Sean C. Sullivan @author Martin Elwin @author Eric Johnson @author Mike Bowler @author Michael Becke @author Oleg Kalnichevski @since 4.0

    }


    // Invalid chunk size
    public void testCorruptChunkedInputStreamInvalidSize() throws IOException {
        String s = "whatever\r\n01234\r\n5\r\n56789\r\n0\r\n";
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        try {
            in.read();
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */
        }
    }

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    }


    // Negative chunk size
    public void testCorruptChunkedInputStreamNegativeSize() throws IOException {
        String s = "-5\r\n01234\r\n5\r\n56789\r\n0\r\n";
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        try {
            in.read();
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */
        }
    }

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    }


    // Invalid footer
    public void testCorruptChunkedInputStreamInvalidFooter() throws IOException {
        String s = "1\r\n0\r\n0\r\nstuff\r\n";
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        try {
            in.read();
            in.read();
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */
        }
    }

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        }
    }


    public void testEmptyChunkedInputStream() throws IOException {
        String input = "0\r\n";
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        EncodingUtils.getBytes(input, CONTENT_CHARSET)));
        byte[] buffer = new byte[300];
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int len;
        while ((len = in.read(buffer)) > 0) {
            out.write(buffer, 0, len);
        }
        assertEquals(0, out.size());
    }

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        out.write(EncodingUtils.getBytes(input, CONTENT_CHARSET));
        out.flush();
        out.close();
        out.close();
        buffer.close();
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        buffer.toByteArray()));


        byte[] d = new byte[10];
        ByteArrayOutputStream result = new ByteArrayOutputStream();
        int len = 0;
        while ((len = in.read(d)) > 0) {
            result.write(d, 0, len);
        }


        String output = EncodingUtils.getString(result.toByteArray(), CONTENT_CHARSET);
        assertEquals(input, output);

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        // Prepare input stream
        this.in = null;
        if (request instanceof HttpEntityEnclosingRequest) {
            long len = this.contentLenStrategy.determineLength(request);
            if (len == ContentLengthStrategy.CHUNKED) {
                this.in = new ChunkedInputStream(this.datareceiver);
            } else if (len == ContentLengthStrategy.IDENTITY) {
                this.in = new HttpDataInputStream(this.datareceiver);                            
            } else {
                this.in = new ContentLengthInputStream(datareceiver, len);
            }

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        out.write(EncodingUtils.getBytes(input, CONTENT_CHARSET));
        out.flush();
        out.close();
        out.close();
        buffer.close();
        InputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        buffer.toByteArray()));


        byte[] d = new byte[10];
        ByteArrayOutputStream result = new ByteArrayOutputStream();
        int len = 0;
        while ((len = in.read(d)) > 0) {
            result.write(d, 0, len);
        }


        String output = EncodingUtils.getString(result.toByteArray(), CONTENT_CHARSET);
        assertEquals(input, output);

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        junit.textui.TestRunner.main(testCaseName);
    }


    public void testConstructors() throws Exception {
        try {
            new ChunkedInputStream((SessionInputBuffer)null);
            fail("IllegalArgumentException should have been thrown");
        } catch (IllegalArgumentException ex) {
            // expected
        }
        new MalformedChunkCodingException();

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    private final static String CHUNKED_RESULT 
        = "123456789012345612345";
    
    // Test for when buffer is larger than chunk size
    public void testChunkedInputStreamLargeBuffer() throws IOException {
        ChunkedInputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                        EncodingUtils.getBytes(CHUNKED_INPUT, CONTENT_CHARSET)));
        byte[] buffer = new byte[300];
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int len;
        while ((len = in.read(buffer)) > 0) {
            out.write(buffer, 0, len);
        }
        assertEquals(-1, in.read(buffer));
        assertEquals(-1, in.read(buffer));
        
        in.close();
        
        String result = EncodingUtils.getString(out.toByteArray(), CONTENT_CHARSET);
        assertEquals(result, CHUNKED_RESULT);
        
        Header[] footers = in.getFooters();
        assertNotNull(footers);
        assertEquals(2, footers.length);
        assertEquals("Footer1", footers[0].getName());
        assertEquals("abcde", footers[0].getValue());
        assertEquals("Footer2", footers[1].getName());

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        assertEquals("fghij", footers[1].getValue());
    }        


    //Test for when buffer is smaller than chunk size.
    public void testChunkedInputStreamSmallBuffer() throws IOException {
        ChunkedInputStream in = new ChunkedInputStream(
                new SessionInputBufferMockup(
                            EncodingUtils.getBytes(CHUNKED_INPUT, CONTENT_CHARSET)));


        byte[] buffer = new byte[7];
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int len;
        while ((len = in.read(buffer)) > 0) {
            out.write(buffer, 0, len);
        }
        assertEquals(-1, in.read(buffer));
        assertEquals(-1, in.read(buffer));


        in.close();
                
        EncodingUtils.getString(out.toByteArray(), CONTENT_CHARSET);
        Header[] footers = in.getFooters();
        assertNotNull(footers);
        assertEquals(2, footers.length);
        assertEquals("Footer1", footers[0].getName());
        assertEquals("abcde", footers[0].getValue());
        assertEquals("Footer2", footers[1].getName());

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