org.archive.wayback.replay

Class HttpHeaderOperation

java.lang.Object

org.archive.wayback.replay.HttpHeaderOperation

public class HttpHeaderOperation
extends Object

Version:

$Date$, $Revision$

Author:

brad

Field Summary

Fields

Modifier and Type	Field and Description
static String	HTTP_CHUNKED_ENCODING_HEADER
static String	HTTP_CONTENT_ENCODING
static String	HTTP_CONTENT_RANGE_HEADER
static String	HTTP_CONTENT_RANGE_HEADER_UP
static String	HTTP_LENGTH_HEADER
static String	HTTP_LENGTH_HEADER_UP
static String	HTTP_RANGE_HEADER
static String	HTTP_RANGE_HEADER_UP
static String	HTTP_TRANSFER_ENC_HEADER

Constructor Summary

Constructors

Constructor and Description
HttpHeaderOperation()

Method Summary

Modifier and Type	Method and Description
static void	copyHTTPMessageHeader(Resource resource, javax.servlet.http.HttpServletResponse httpResponse)
static String	getContentLength(Map<String,String> headers)
static long[]	getContentRange(Map<String,String> headers) Return Content-Range response header field value.
static String	getHeaderValue(Map<String,String> headers, String k)
static long[][]	getRange(Map<String,String> headers) Get Range header field, and return parsed ranges.
static boolean	isChunkEncoded(Map<String,String> headers)
static long[]	parseContentRange(String value) Parse value as byte-content-range-spec.
static long[]	parseRange(String rangeValue) Parse single byte-range-spec.
static long[][]	parseRanges(String rangeValue) Parse Range header field value.
static Map<String,String>	processHeaders(Resource resource, CaptureSearchResult result, ResultURIConverter uriConverter, HttpHeaderProcessor filter)
static boolean	removeHeader(Map<String,String> headers, String k)
static void	replaceHeader(Map<String,String> headers, String name, String value) Replace header field name value with value, or add it if headers does not have name.
static void	sendHeaders(Map<String,String> headers, javax.servlet.http.HttpServletResponse response)

Methods inherited from class java.lang.Object

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

Field Detail

HTTP_LENGTH_HEADER

public static final String HTTP_LENGTH_HEADER

See Also:

Constant Field Values

HTTP_LENGTH_HEADER_UP

public static final String HTTP_LENGTH_HEADER_UP

HTTP_TRANSFER_ENC_HEADER

public static final String HTTP_TRANSFER_ENC_HEADER

HTTP_CHUNKED_ENCODING_HEADER

public static final String HTTP_CHUNKED_ENCODING_HEADER

HTTP_CONTENT_ENCODING

public static final String HTTP_CONTENT_ENCODING

See Also:

Constant Field Values

HTTP_RANGE_HEADER

public static final String HTTP_RANGE_HEADER

See Also:

Constant Field Values

HTTP_RANGE_HEADER_UP

public static final String HTTP_RANGE_HEADER_UP

HTTP_CONTENT_RANGE_HEADER

public static final String HTTP_CONTENT_RANGE_HEADER

See Also:

Constant Field Values

HTTP_CONTENT_RANGE_HEADER_UP

public static final String HTTP_CONTENT_RANGE_HEADER_UP

Constructor Detail

HttpHeaderOperation

public HttpHeaderOperation()

Method Detail

copyHTTPMessageHeader

public static void copyHTTPMessageHeader(Resource resource,
                                         javax.servlet.http.HttpServletResponse httpResponse)
                                  throws BadContentException

Parameters:

resource -

httpResponse -

Throws:

BadContentException

processHeaders

public static Map<String,String> processHeaders(Resource resource,
                                                CaptureSearchResult result,
                                                ResultURIConverter uriConverter,
                                                HttpHeaderProcessor filter)

Parameters:

resource -

result -

uriConverter -

filter -

Returns:

A HashMap containing the HTTP headers extracted from the Resource.

sendHeaders

public static void sendHeaders(Map<String,String> headers,
                               javax.servlet.http.HttpServletResponse response)

Parameters:

headers -

response -

getContentLength

public static String getContentLength(Map<String,String> headers)

isChunkEncoded

public static boolean isChunkEncoded(Map<String,String> headers)

getHeaderValue

public static String getHeaderValue(Map<String,String> headers,
                                    String k)

removeHeader

public static boolean removeHeader(Map<String,String> headers,
                                   String k)

replaceHeader

public static void replaceHeader(Map<String,String> headers,
                                 String name,
                                 String value)

Replace header field name value with value, or add it if headers does not have name.

Parameters:

headers - header fields

name - header field name

value - new value for the header field

getRange

public static long[][] getRange(Map<String,String> headers)

Get Range header field, and return parsed ranges.

Parameters:

headers - header fields.

Returns:

array of long[2] or null if Range header field is not present, or invalid.

parseRanges

public static long[][] parseRanges(String rangeValue)

Parse Range header field value. Only bytes unit is supported.

Parameters:

rangeValue - Range header field value.

Returns:

an array of long[2], or null if invalid.

parseRange

public static long[] parseRange(String rangeValue)

Parse single byte-range-spec. For suffix-byte-range-spec (-N), return [-N, -1]. For byte-range-spec without last-byte-pos (M-), return [M, -1]. For full-range-spec (M-N), return [M, N + 1].

Parameters:

rangeValue - byte-range-spec

Returns:

long[2], or null if invalid

getContentRange

public static long[] getContentRange(Map<String,String> headers)

Return Content-Range response header field value.

Parameters:

headers - response header fields.

Returns:

Three element array with first-byte-pos, last-byte-pos + 1 and instance-length, or null if value is syntactically invalid.

parseContentRange

public static long[] parseContentRange(String value)

Parse value as byte-content-range-spec. byte-range-resp-spec is parsed with parseRange(String). If byte-range-resp-spec is *, both first-byte-pos and last-byte-pos will be -1.

Parameters:

value - Content-Range header field value.

Returns:

Three element array with first-byte-pos, last-byte-pos + 1 and instance-length, or null if value is syntactically invalid.

See Also:

parseRange(java.lang.String)