InputStream do not read properly

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  • danibangelov
    New Member
    • May 2007
    • 4
    #1

    InputStream do not read properly

    Hello,
    Can you say me, where I make a mistake.
    I am writing a proxy.When I read from InputStream in,
    like:
    try {
    byte[] buf = new byte[4096];
    int bytesIn = 0;
    while (((bytesIn = in.read(buf)) >= 0))
    {
    String sss1 = new String(buf);
    out.write(buf, 0, bytesIn);
    }
    } catch (Exception e) {
    String errMsg = "Error getting HTTP body: " + e;
    debugOut.printl n(errMsg);
    }

    So,when I look in sss1 contents,there have extra information like:

    3




    79
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
    3a
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title>
    2d

    The result is incorect page displaying.
    Can you say me, where I make a mistake.
    Or how I can remove this extra information, so that page can to display corect in the browser.
    Tags: None
    • JosAH
      Recognized Expert MVP
      • Mar 2007
      • 11453
      #2
      Originally posted by danibangelov
      [code=java]byte[] buf = new byte[4096];
      int bytesIn = 0;
      while (((bytesIn = in.read(buf)) >= 0))
      {
      String sss1 = new String(buf);
      out.write(buf, 0, bytesIn);
      }[/code]

      So,when I look in sss1 contents,there have extra information like: <snip>
      You're building a string out of the *entire* buffer 'buf'. Think what would happen
      if you have read less than 4096 bytes. You do anticipate for a partially filled
      buffer when you write the bytes to the 'out' stream. Do the same when you
      create the string. (read the API docs for an applicable String constructor).

      kind regards,

      Jos

        Comment

        • dmjpro
          Top Contributor
          • Jan 2007
          • 2476
          #3
          Update the line while
          [code=java]
          //while(((bytesIn = in.read(buf)) >= 0)) ==== Wrong
          while (((bytesIn = in.read(buf)) > 0)) //====Right
          [/code]
          Best of luck.

          Kind regards,
          Dmjpro.

            Comment

            • danibangelov
              New Member
              • May 2007
              • 4
              #4
              I found the problem.
              This happends when in the header is set "Transfer-Encoding: chunked".
              So that extra info is from chunk.

                Comment

                • JosAH
                  Recognized Expert MVP
                  • Mar 2007
                  • 11453
                  #5
                  Originally posted by danibangelov
                  I found the problem.
                  This happends when in the header is set "Transfer-Encoding: chunked".
                  So that extra info is from chunk.
                  I think you found part of your problem; the other part is that you're still using
                  the entire buffer to build String sss1 out of it. The buffer might not have been
                  filled completly, so only the first part of it contains valid data.

                  kind regards,

                  Jos

                    Comment

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