Package com.twelvemonkeys.net

Class HTTPUtil

  • public class HTTPUtil
extends java.lang.Object
    HTTPUtil
    Version:
    $Id: HTTPUtil.java,v 1.0 08.09.13 13:57 haraldk Exp$

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.text.SimpleDateFormat HTTP_ASCTIME_FORMAT
      ANSI C asctime() date format, (almost) as described in RFC 2616 (HTTP/1.1), sec 3.3.
      private static java.text.SimpleDateFormat HTTP_RFC1123_FORMAT
      RFC 1123 date format, as recommended by RFC 2616 (HTTP/1.1), sec 3.3 NOTE: All date formats are private, to ensure synchronized access.
      private static java.text.SimpleDateFormat HTTP_RFC850_FORMAT
      RFC 850 date format, (almost) as described in RFC 2616 (HTTP/1.1), sec 3.3 USE FOR PARSING ONLY (format is not 100% correct, to be more robust).
      private static long sNext50YearWindowChange  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private HTTPUtil()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String formatHTTPDate​(long pTime)
      Formats the time to a HTTP date, using the RFC 1123 format, as described in RFC 2616 (HTTP/1.1), sec.
      static java.lang.String formatHTTPDate​(java.util.Date pTime)
      Formats the time to a HTTP date, using the RFC 1123 format, as described in RFC 2616 (HTTP/1.1), sec.
      static long parseHTTPDate​(java.lang.String pDate)
      Parses a HTTP date string into a long representing milliseconds since January 1, 1970 GMT.
      private static java.util.Date parseHTTPDateImpl​(java.lang.String pDate)
      ParseHTTPDate implementation
      private static void update50YearWindowIfNeeded()  

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • HTTP_RFC1123_FORMAT

        private static final java.text.SimpleDateFormat HTTP_RFC1123_FORMAT
        RFC 1123 date format, as recommended by RFC 2616 (HTTP/1.1), sec 3.3 NOTE: All date formats are private, to ensure synchronized access.

      • HTTP_RFC850_FORMAT

        private static final java.text.SimpleDateFormat HTTP_RFC850_FORMAT
        RFC 850 date format, (almost) as described in RFC 2616 (HTTP/1.1), sec 3.3 USE FOR PARSING ONLY (format is not 100% correct, to be more robust).

      • HTTP_ASCTIME_FORMAT

        private static final java.text.SimpleDateFormat HTTP_ASCTIME_FORMAT
        ANSI C asctime() date format, (almost) as described in RFC 2616 (HTTP/1.1), sec 3.3. USE FOR PARSING ONLY (format is not 100% correct, to be more robust).

      • sNext50YearWindowChange

        private static long sNext50YearWindowChange

    • Constructor Detail

      • HTTPUtil

        private HTTPUtil()

    • Method Detail

      • update50YearWindowIfNeeded

        private static void update50YearWindowIfNeeded()

      • formatHTTPDate

        public static java.lang.String formatHTTPDate​(long pTime)
        Formats the time to a HTTP date, using the RFC 1123 format, as described in RFC 2616 (HTTP/1.1), sec. 3.3.
        Parameters:
        pTime - the time
        Returns:
        a String representation of the time

      • formatHTTPDate

        public static java.lang.String formatHTTPDate​(java.util.Date pTime)
        Formats the time to a HTTP date, using the RFC 1123 format, as described in RFC 2616 (HTTP/1.1), sec. 3.3.
        Parameters:
        pTime - the time
        Returns:
        a String representation of the time

      • parseHTTPDate

        public static long parseHTTPDate​(java.lang.String pDate)
                          throws java.lang.NumberFormatException
        Parses a HTTP date string into a long representing milliseconds since January 1, 1970 GMT.

        Use this method with headers that contain dates, such as If-Modified-Since or Last-Modified.

        The date string may be in either RFC 1123, RFC 850 or ANSI C asctime() format, as described in RFC 2616 (HTTP/1.1), sec. 3.3

        Parameters:
        pDate - the date to parse
        Returns:
        a long value representing the date, expressed as the number of milliseconds since January 1, 1970 GMT,
        Throws:
        java.lang.NumberFormatException - if the date parameter is not parseable.
        java.lang.IllegalArgumentException - if the date paramter is null

      • parseHTTPDateImpl

        private static java.util.Date parseHTTPDateImpl​(java.lang.String pDate)
                                         throws java.lang.NumberFormatException
        ParseHTTPDate implementation
        Parameters:
        pDate - the date string to parse
        Returns:
        a Date
        Throws:
        java.lang.NumberFormatException - if the date parameter is not parseable.
        java.lang.IllegalArgumentException - if the date paramter is null