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

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


    //Test for when buffer is smaller than chunk size.
    public void testChunkedInputStreamSmallBuffer() throws IOException {
        ChunkedInputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(
                            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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    }
        
    // One byte read
    public void testChunkedInputStreamOneByteRead() throws IOException {
        String s = "5\r\n01234\r\n5\r\n56789\r\n0\r\n";
        ChunkedInputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        int ch;
        int i = '0';
        while ((ch = in.read()) != -1) {
            assertEquals(i, ch);
            i++;
        }
        assertEquals(-1, in.read());
        assertEquals(-1, in.read());        


        in.close();        
    }

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        in.close();        
    }


    public void testChunkedInputStreamClose() throws IOException {
        String s = "5\r\n01234\r\n5\r\n56789\r\n0\r\n";
        ChunkedInputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        in.close();
        in.close();
        try {
            in.read();
            fail("IOException should have been thrown");
        } catch (IOException ex) {
            // expected
        }
        byte[] tmp = new byte[10]; 
        try {
            in.read(tmp);
            fail("IOException should have been thrown");
        } catch (IOException ex) {
            // expected
        }
        try {
            in.read(tmp, 0, tmp.length);
            fail("IOException should have been thrown");
        } catch (IOException ex) {
            // expected
        }
    }

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    }


    // Missing \r\n at the end of the first chunk
    public void testCorruptChunkedInputStreamMissingCRLF() throws IOException {
        String s = "5\r\n012345\r\n56789\r\n0\r\n";
        InputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        byte[] buffer = new byte[300];
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        int len;
        try {
            while ((len = in.read(buffer)) > 0) {
                out.write(buffer, 0, len);
            }
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */

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    }


    // Missing LF
    public void testCorruptChunkedInputStreamMissingLF() throws IOException {
        String s = "5\r01234\r\n5\r\n56789\r\n0\r\n";
        InputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(
                        EncodingUtils.getBytes(s, CONTENT_CHARSET)));
        try {
            in.read();
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */
        }
    }

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        }
    }


    // Missing closing chunk
    public void testCorruptChunkedInputStreamNoClosingChunk() throws IOException {
        InputStream in = new ChunkedInputStream(
                new HttpDataReceiverMockup(new byte[] {}));
        try {
            in.read();
            fail("MalformedChunkCodingException should have been thrown");
        } catch(MalformedChunkCodingException e) {
            /* expected exception */
        }
    }

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    }


    // 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 HttpDataReceiverMockup(
                        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 HttpDataReceiverMockup(
                        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 HttpDataReceiverMockup(
                        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 HttpDataReceiverMockup(
                        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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