Java Code Examples for javax.servlet.http.HttpServletResponse#SC_LENGTH_REQUIRED

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Example 1
Source File: RequestImpl.java    From knopflerfish.org with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up 
public void handle() throws HttpException, IOException
{
  base.handle();
  is_http_1_1 = base.getProtocol().equals(RequestBase.HTTP_1_1_PROTOCOL);

  if (is_http_1_1
      && !base.getHeaders(HeaderBase.HOST_HEADER_KEY).hasMoreElements()) {
    throw new HttpException(HttpServletResponse.SC_BAD_REQUEST);
  }

  final int available = getContentLength();
  String connection = getHeader(HeaderBase.CONNECTION_HEADER_KEY);
  // For details on the Proxy-Connection header please read:
  // http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/web-proxy-connection-header.html
  if (null == connection || 0 == connection.length()) {
    // We handle Proxy-Connection in the same way as Connection
    connection = getHeader("Proxy-Connection");
  }

  final String method = base.getMethod();
  // TODO: OPTIONS and DELETE -> lengthKnown
  final boolean lengthKnown =
      method.equals(RequestBase.GET_METHOD)
          || method.equals(RequestBase.HEAD_METHOD) || available != -1;
  if (lengthKnown) {
    if (is_http_1_1) {
      if (!"close".equalsIgnoreCase(connection)) {
        keepAlive = true;
      }
    } else if ("Keep-Alive".equalsIgnoreCase(connection)) {
      keepAlive = true;
    }
  }

  // keepAlive = false;

  if (available != -1) {
    if (keepAlive) {
      base.getBody().setLimit(available);
    } else if (!is_http_1_1) {
      // perhaps not according to spec, but works better :)
      base.getBody().setLimit(available);
    }
  } else {
    if (method.equals(RequestBase.POST_METHOD)) {
      final String transfer_encoding =
          getHeader(HeaderBase.TRANSFER_ENCODING_KEY);
      if (HeaderBase.TRANSFER_ENCODING_VALUE_CHUNKED
                                                    .equals(transfer_encoding)) {
        // Handle chunked body the by reading every chunk and creating
        // a new servletinputstream for the decoded body
        // The only client (so far) that seems to be doing this is the
        // Axis2 library
        base.setBody(readChunkedBody(base.getBody()));
      } else {
        throw new HttpException(HttpServletResponse.SC_LENGTH_REQUIRED);
      }
    }
  }

  handleSession();
}