private static void addHeadersToRequest()

in src/android/FileTransfer.java [186:225]

• 23 lines of code
• 5 McCabe index (conditional complexity)

    private static void addHeadersToRequest(URLConnection connection, JSONObject headers) {
        try {
            for (Iterator<?> iter = headers.keys(); iter.hasNext(); ) {
                /* RFC 2616 says that non-ASCII characters and control
                 * characters are not allowed in header names or values.
                 * Additionally, spaces are not allowed in header names.
                 * RFC 2046 Quoted-printable encoding may be used to encode
                 * arbitrary characters, but we donon- not do that encoding here.
                 */
                String headerKey = iter.next().toString();
                String cleanHeaderKey = headerKey.replaceAll("\\n","")
                        .replaceAll("\\s+","")
                        .replaceAll(":", "")
                        .replaceAll("[^\\x20-\\x7E]+", "");

                JSONArray headerValues = headers.optJSONArray(headerKey);
                if (headerValues == null) {
                    headerValues = new JSONArray();

                     /* RFC 2616 also says that any amount of consecutive linear
                      * whitespace within a header value can be replaced with a
                      * single space character, without affecting the meaning of
                      * that value.
                      */

                    String headerValue = headers.getString(headerKey);
                    String finalValue = headerValue.replaceAll("\\s+", " ").replaceAll("\\n"," ").replaceAll("[^\\x20-\\x7E]+", " ");
                    headerValues.put(finalValue);
                }

                //Use the clean header key, not the one that we passed in
                connection.setRequestProperty(cleanHeaderKey, headerValues.getString(0));
                for (int i = 1; i < headerValues.length(); ++i) {
                    connection.addRequestProperty(headerKey, headerValues.getString(i));
                }
            }
        } catch (JSONException e1) {
          // No headers to be manipulated!
        }
    }