HttpHeaders (Netty API Reference (4.1.11.Final))

java.lang.Object
- io.netty.handler.codec.http.HttpHeaders

All Implemented Interfaces:

Iterable<Map.Entry<String,String>>

Direct Known Subclasses:

DefaultHttpHeaders, EmptyHttpHeaders
```
public abstract class HttpHeaders
extends Object
implements Iterable<Map.Entry<String,String>>
```
Provides the constants for the standard HTTP header names and values and commonly used utility methods that accesses an HttpMessage.

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static class`	`HttpHeaders.Names` Deprecated. Use `HttpHeaderNames` instead. Standard HTTP header names.
`static class`	`HttpHeaders.Values` Deprecated. Use `HttpHeaderValues` instead. Standard HTTP header values.

Field Summary

Fields
Modifier and Type	Field and Description
`static HttpHeaders`	`EMPTY_HEADERS` Deprecated. Use `EmptyHttpHeaders.INSTANCE`. The instance is instantiated here to break the cyclic static initialization between `EmptyHttpHeaders` and `HttpHeaders`. The issue is that if someone accesses `EmptyHttpHeaders.INSTANCE` before `EMPTY_HEADERS` then `EMPTY_HEADERS` will be `null`.

Constructor Summary

Constructors
Modifier Constructor and Description

protected HttpHeaders()

Constructors
Modifier	Constructor and Description
`protected`	`HttpHeaders()`

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`HttpHeaders`	`add(CharSequence name, Iterable<?> values)` Adds a new header with the specified name and values.
`HttpHeaders`	`add(CharSequence name, Object value)` Adds a new header with the specified name and value.
`HttpHeaders`	`add(HttpHeaders headers)` Adds all header entries of the specified `headers`.
`abstract HttpHeaders`	`add(String name, Iterable<?> values)`
`abstract HttpHeaders`	`add(String name, Object value)`
`static void`	`addDateHeader(HttpMessage message, CharSequence name, Date value)` Deprecated. Use `add(CharSequence, Object)` instead. Adds a new date header with the specified name and value. The specified value is formatted as defined in RFC2616
`static void`	`addDateHeader(HttpMessage message, String name, Date value)` Deprecated. Use `add(CharSequence, Object)` instead.
`static void`	`addHeader(HttpMessage message, CharSequence name, Object value)` Deprecated. Use `add(CharSequence, Object)` instead. Adds a new header with the specified name and value. If the specified value is not a `String`, it is converted into a `String` by `Object.toString()`, except for `Date` and `Calendar` which are formatted to the date format defined in RFC2616.
`static void`	`addHeader(HttpMessage message, String name, Object value)` Deprecated. Use `add(CharSequence, Object)` instead.
`abstract HttpHeaders`	`addInt(CharSequence name, int value)` Add the `name` to `value`.
`static void`	`addIntHeader(HttpMessage message, CharSequence name, int value)` Deprecated. Use `addInt(CharSequence, int)` instead. Adds a new integer header with the specified name and value.
`static void`	`addIntHeader(HttpMessage message, String name, int value)` Deprecated. Use `add(CharSequence, Iterable)` instead.
`abstract HttpHeaders`	`addShort(CharSequence name, short value)` Add the `name` to `value`.
`abstract HttpHeaders`	`clear()` Removes all headers from this `HttpMessage`.
`static void`	`clearHeaders(HttpMessage message)` Deprecated. Use `clear()` instead. Removes all headers from the specified message.
`boolean`	`contains(CharSequence name)` Checks to see if there is a header with the specified name
`boolean`	`contains(CharSequence name, CharSequence value, boolean ignoreCase)` Returns `true` if a header with the `name` and `value` exists, `false` otherwise.
`abstract boolean`	`contains(String name)`
`boolean`	`contains(String name, String value, boolean ignoreCase)`
`boolean`	`containsValue(CharSequence name, CharSequence value, boolean ignoreCase)` Returns `true` if a header with the `name` and `value` exists, `false` otherwise.
`static void`	`encodeAscii(CharSequence seq, ByteBuf buf)`
`abstract List<Map.Entry<String,String>>`	`entries()` Returns a new `List` that contains all headers in this object.
`static boolean`	`equalsIgnoreCase(CharSequence name1, CharSequence name2)` Deprecated. Use `AsciiString.contentEqualsIgnoreCase(CharSequence, CharSequence)` instead.
`String`	`get(CharSequence name)` Returns the value of a header with the specified name.
`String`	`get(CharSequence name, String defaultValue)` Returns the value of a header with the specified name.
`abstract String`	`get(String name)`
`List<String>`	`getAll(CharSequence name)` Returns the values of headers with the specified name
`abstract List<String>`	`getAll(String name)`
`List<String>`	`getAllAsString(CharSequence name)` `Headers.getAll(Object)` and convert each element of `List` to a `String`.
`String`	`getAsString(CharSequence name)` `Headers.get(Object)` and convert the result to a `String`.
`static long`	`getContentLength(HttpMessage message)` Deprecated. Use `HttpUtil.getContentLength(HttpMessage)` instead. Returns the length of the content. Please note that this value is not retrieved from `ByteBufHolder.content()` but from the `"Content-Length"` header, and thus they are independent from each other.
`static long`	`getContentLength(HttpMessage message, long defaultValue)` Deprecated. Use `HttpUtil.getContentLength(HttpMessage, long)` instead. Returns the length of the content. Please note that this value is not retrieved from `ByteBufHolder.content()` but from the `"Content-Length"` header, and thus they are independent from each other.
`static Date`	`getDate(HttpMessage message)` Deprecated. Use `getTimeMillis(CharSequence)` instead. Returns the value of the `"Date"` header.
`static Date`	`getDate(HttpMessage message, Date defaultValue)` Deprecated. Use `getTimeMillis(CharSequence, long)` instead. Returns the value of the `"Date"` header. If there is no such header or the header is not a formatted date, the `defaultValue` is returned.
`static Date`	`getDateHeader(HttpMessage message, CharSequence name)` Deprecated. Use `getTimeMillis(CharSequence)` instead. Returns the date header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static Date`	`getDateHeader(HttpMessage message, CharSequence name, Date defaultValue)` Deprecated. Use `getTimeMillis(CharSequence, long)` instead. Returns the date header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static Date`	`getDateHeader(HttpMessage message, String name)` Deprecated. Use `getTimeMillis(CharSequence)` instead.
`static Date`	`getDateHeader(HttpMessage message, String name, Date defaultValue)` Deprecated. Use `getTimeMillis(CharSequence, long)` instead.
`static String`	`getHeader(HttpMessage message, CharSequence name)` Deprecated. Use `get(CharSequence)` instead. Returns the header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static String`	`getHeader(HttpMessage message, CharSequence name, String defaultValue)` Deprecated. Use `get(CharSequence, String)` instead. Returns the header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static String`	`getHeader(HttpMessage message, String name)` Deprecated. Use `get(CharSequence)` instead.
`static String`	`getHeader(HttpMessage message, String name, String defaultValue)` Deprecated. Use `get(CharSequence, String)` instead.
`static String`	`getHost(HttpMessage message)` Deprecated. Use `get(CharSequence)` instead. Returns the value of the `"Host"` header.
`static String`	`getHost(HttpMessage message, String defaultValue)` Deprecated. Use `get(CharSequence, String)` instead. Returns the value of the `"Host"` header. If there is no such header, the `defaultValue` is returned.
`abstract Integer`	`getInt(CharSequence name)` Returns the integer value of a header with the specified name.
`abstract int`	`getInt(CharSequence name, int defaultValue)` Returns the integer value of a header with the specified name.
`static int`	`getIntHeader(HttpMessage message, CharSequence name)` Deprecated. Use `getInt(CharSequence)` instead. Returns the integer header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static int`	`getIntHeader(HttpMessage message, CharSequence name, int defaultValue)` Deprecated. Use `getInt(CharSequence, int)` instead. Returns the integer header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
`static int`	`getIntHeader(HttpMessage message, String name)` Deprecated. Use `getInt(CharSequence)` instead.
`static int`	`getIntHeader(HttpMessage message, String name, int defaultValue)` Deprecated. Use `getInt(CharSequence, int)` instead.
`abstract Short`	`getShort(CharSequence name)` Returns the short value of a header with the specified name.
`abstract short`	`getShort(CharSequence name, short defaultValue)` Returns the short value of a header with the specified name.
`abstract Long`	`getTimeMillis(CharSequence name)` Returns the date value of a header with the specified name.
`abstract long`	`getTimeMillis(CharSequence name, long defaultValue)` Returns the date value of a header with the specified name.
`static boolean`	`is100ContinueExpected(HttpMessage message)` Deprecated. Use `HttpUtil.is100ContinueExpected(HttpMessage)` instead. Returns `true` if and only if the specified message contains the `"Expect: 100-continue"` header.
`static boolean`	`isContentLengthSet(HttpMessage m)` Deprecated. Use `HttpUtil.isContentLengthSet(HttpMessage)` instead.
`abstract boolean`	`isEmpty()` Checks if no header exists.
`static boolean`	`isKeepAlive(HttpMessage message)` Deprecated. Use `HttpUtil.isKeepAlive(HttpMessage)` instead. Returns `true` if and only if the connection can remain open and thus 'kept alive'. This methods respects the value of the `"Connection"` header first and then the return value of `HttpVersion.isKeepAliveDefault()`.
`static boolean`	`isTransferEncodingChunked(HttpMessage message)` Deprecated. Use `HttpUtil.isTransferEncodingChunked(HttpMessage)` instead. Checks to see if the transfer encoding in a specified `HttpMessage` is chunked
`abstract Iterator<Map.Entry<String,String>>`	`iterator()` Deprecated. It is preferred to use `iteratorCharSequence()` unless you need `String`. If `String` is required then use `iteratorAsString()`.
`Iterator<Map.Entry<String,String>>`	`iteratorAsString()` `Iterator` that converts each `Map.Entry`'s key and value to a `String`.
`abstract Iterator<Map.Entry<CharSequence,CharSequence>>`	`iteratorCharSequence()`
`abstract Set<String>`	`names()` Returns a new `Set` that contains the names of all headers in this object.
`static CharSequence`	`newEntity(String name)` Deprecated. Use `AsciiString` instead. Create a new `CharSequence` which is optimized for reuse as `HttpHeaders` name or value. So if you have a Header name or value that you want to reuse you should make use of this.
`HttpHeaders`	`remove(CharSequence name)` Removes the header with the specified name.
`abstract HttpHeaders`	`remove(String name)`
`static void`	`removeHeader(HttpMessage message, CharSequence name)` Deprecated. Use `remove(CharSequence)` instead. Removes the header with the specified name.
`static void`	`removeHeader(HttpMessage message, String name)` Deprecated. Use `remove(CharSequence)` instead.
`static void`	`removeTransferEncodingChunked(HttpMessage m)` Deprecated. Use `HttpUtil.setTransferEncodingChunked(HttpMessage, boolean)` instead.
`HttpHeaders`	`set(CharSequence name, Iterable<?> values)` Sets a header with the specified name and values.
`HttpHeaders`	`set(CharSequence name, Object value)` Sets a header with the specified name and value.
`HttpHeaders`	`set(HttpHeaders headers)` Cleans the current header entries and copies all header entries of the specified `headers`.
`abstract HttpHeaders`	`set(String name, Iterable<?> values)`
`abstract HttpHeaders`	`set(String name, Object value)`
`static void`	`set100ContinueExpected(HttpMessage message)` Deprecated. Use `HttpUtil.set100ContinueExpected(HttpMessage, boolean)` instead. Sets the `"Expect: 100-continue"` header to the specified message. If there is any existing `"Expect"` header, they are replaced with the new one.
`static void`	`set100ContinueExpected(HttpMessage message, boolean set)` Deprecated. Use `HttpUtil.set100ContinueExpected(HttpMessage, boolean)` instead. Sets or removes the `"Expect: 100-continue"` header to / from the specified message. If `set` is `true`, the `"Expect: 100-continue"` header is set and all other previous `"Expect"` headers are removed. Otherwise, all `"Expect"` headers are removed completely.
`HttpHeaders`	`setAll(HttpHeaders headers)` Retains all current headers but calls `set(String, Object)` for each entry in `headers`
`static void`	`setContentLength(HttpMessage message, long length)` Deprecated. Use `HttpUtil.setContentLength(HttpMessage, long)` instead.
`static void`	`setDate(HttpMessage message, Date value)` Deprecated. Use `set(CharSequence, Object)` instead. Sets the `"Date"` header.
`static void`	`setDateHeader(HttpMessage message, CharSequence name, Date value)` Deprecated. Use `set(CharSequence, Object)` instead. Sets a new date header with the specified name and value. If there is an existing header with the same name, the existing header is removed. The specified value is formatted as defined in RFC2616
`static void`	`setDateHeader(HttpMessage message, CharSequence name, Iterable<Date> values)` Deprecated. Use `set(CharSequence, Iterable)` instead. Sets a new date header with the specified name and values. If there is an existing header with the same name, the existing header is removed. The specified values are formatted as defined in RFC2616
`static void`	`setDateHeader(HttpMessage message, String name, Date value)` Deprecated. Use `set(CharSequence, Object)` instead.
`static void`	`setDateHeader(HttpMessage message, String name, Iterable<Date> values)` Deprecated. Use `set(CharSequence, Iterable)` instead.
`static void`	`setHeader(HttpMessage message, CharSequence name, Iterable<?> values)` Deprecated. Use `set(CharSequence, Iterable)` instead. Sets a new header with the specified name and values. If there is an existing header with the same name, the existing header is removed. This getMethod can be represented approximately as the following code: removeHeader(message, name); for (Object v: values) { if (v == null) { break; } addHeader(message, name, v); }
`static void`	`setHeader(HttpMessage message, CharSequence name, Object value)` Deprecated. Use `set(CharSequence, Object)` instead. Sets a new header with the specified name and value. If there is an existing header with the same name, the existing header is removed. If the specified value is not a `String`, it is converted into a `String` by `Object.toString()`, except for `Date` and `Calendar` which are formatted to the date format defined in RFC2616.
`static void`	`setHeader(HttpMessage message, String name, Iterable<?> values)` Deprecated. Use `set(CharSequence, Iterable)` instead.
`static void`	`setHeader(HttpMessage message, String name, Object value)` Deprecated. Use `set(CharSequence, Object)` instead.
`static void`	`setHost(HttpMessage message, CharSequence value)` Deprecated. Use `set(CharSequence, Object)` instead. Sets the `"Host"` header.
`static void`	`setHost(HttpMessage message, String value)` Deprecated. Use `set(CharSequence, Object)` instead.
`abstract HttpHeaders`	`setInt(CharSequence name, int value)` Set the `name` to `value`.
`static void`	`setIntHeader(HttpMessage message, CharSequence name, int value)` Deprecated. Use `setInt(CharSequence, int)` instead. Sets a new integer header with the specified name and value. If there is an existing header with the same name, the existing header is removed.
`static void`	`setIntHeader(HttpMessage message, CharSequence name, Iterable<Integer> values)` Deprecated. Use `set(CharSequence, Iterable)` instead. Sets a new integer header with the specified name and values. If there is an existing header with the same name, the existing header is removed.
`static void`	`setIntHeader(HttpMessage message, String name, int value)` Deprecated. Use `setInt(CharSequence, int)` instead.
`static void`	`setIntHeader(HttpMessage message, String name, Iterable<Integer> values)` Deprecated. Use `set(CharSequence, Iterable)` instead.
`static void`	`setKeepAlive(HttpMessage message, boolean keepAlive)` Deprecated. Use `HttpUtil.setKeepAlive(HttpMessage, boolean)` instead. Sets the value of the `"Connection"` header depending on the protocol version of the specified message. This getMethod sets or removes the `"Connection"` header depending on what the default keep alive mode of the message's protocol version is, as specified by `HttpVersion.isKeepAliveDefault()`. If the connection is kept alive by default: set to `"close"` if `keepAlive` is `false`. remove otherwise. If the connection is closed by default: set to `"keep-alive"` if `keepAlive` is `true`. remove otherwise.
`abstract HttpHeaders`	`setShort(CharSequence name, short value)` Set the `name` to `value`.
`static void`	`setTransferEncodingChunked(HttpMessage m)` Deprecated. Use `HttpUtil.setTransferEncodingChunked(HttpMessage, boolean)` instead.
`abstract int`	`size()` Returns the number of headers in this object.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable
forEach, spliterator

- Field Detail
  - EMPTY_HEADERS
```
@Deprecated
public static final HttpHeaders EMPTY_HEADERS
```
    Deprecated. Use EmptyHttpHeaders.INSTANCE.
    The instance is instantiated here to break the cyclic static initialization between EmptyHttpHeaders and HttpHeaders. The issue is that if someone accesses EmptyHttpHeaders.INSTANCE before EMPTY_HEADERS then EMPTY_HEADERS will be null.
- Constructor Detail
  - HttpHeaders
```
protected HttpHeaders()
```
- Method Detail
  - isKeepAlive
```
@Deprecated
public static boolean isKeepAlive(HttpMessage message)
```
    Deprecated. Use HttpUtil.isKeepAlive(HttpMessage) instead. Returns true if and only if the connection can remain open and thus 'kept alive'. This methods respects the value of the "Connection" header first and then the return value of HttpVersion.isKeepAliveDefault().
  - setKeepAlive
```
@Deprecated
public static void setKeepAlive(HttpMessage message,
                                            boolean keepAlive)
```
    Deprecated.
    Use HttpUtil.setKeepAlive(HttpMessage, boolean) instead. Sets the value of the "Connection" header depending on the protocol version of the specified message. This getMethod sets or removes the "Connection" header depending on what the default keep alive mode of the message's protocol version is, as specified by HttpVersion.isKeepAliveDefault().
    
    If the connection is kept alive by default:
    
    set to "close" if keepAlive is false.
    
    remove otherwise.
    
    If the connection is closed by default:
    
    set to "keep-alive" if keepAlive is true.
    
    remove otherwise.
  - getHeader
```
@Deprecated
public static String getHeader(HttpMessage message,
                                           String name)
```
    Deprecated. Use get(CharSequence) instead.
  - getHeader
```
@Deprecated
public static String getHeader(HttpMessage message,
                                           CharSequence name)
```
    Deprecated. Use get(CharSequence) instead. Returns the header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value or null if there is no such header
  - getHeader
```
@Deprecated
public static String getHeader(HttpMessage message,
                                           String name,
                                           String defaultValue)
```
    Deprecated. Use get(CharSequence, String) instead.
    
    See Also:
    
    getHeader(HttpMessage, CharSequence, String)
  - getHeader
```
@Deprecated
public static String getHeader(HttpMessage message,
                                           CharSequence name,
                                           String defaultValue)
```
    Deprecated. Use get(CharSequence, String) instead. Returns the header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value or the defaultValue if there is no such header
  - setHeader
```
@Deprecated
public static void setHeader(HttpMessage message,
                                         String name,
                                         Object value)
```
    Deprecated. Use set(CharSequence, Object) instead.
    
    See Also:
    
    setHeader(HttpMessage, CharSequence, Object)
  - setHeader
```
@Deprecated
public static void setHeader(HttpMessage message,
                                         CharSequence name,
                                         Object value)
```
    Deprecated. Use set(CharSequence, Object) instead. Sets a new header with the specified name and value. If there is an existing header with the same name, the existing header is removed. If the specified value is not a String, it is converted into a String by Object.toString(), except for Date and Calendar which are formatted to the date format defined in RFC2616.
  - setHeader
```
@Deprecated
public static void setHeader(HttpMessage message,
                                         String name,
                                         Iterable<?> values)
```
    Deprecated. Use set(CharSequence, Iterable) instead.
    
    See Also:
    
    setHeader(HttpMessage, CharSequence, Iterable)
  - setHeader
```
@Deprecated
public static void setHeader(HttpMessage message,
                                         CharSequence name,
                                         Iterable<?> values)
```
    Deprecated.
    Use set(CharSequence, Iterable) instead. Sets a new header with the specified name and values. If there is an existing header with the same name, the existing header is removed. This getMethod can be represented approximately as the following code:
    removeHeader(message, name); for (Object v: values) { if (v == null) { break; } addHeader(message, name, v); }
  - addHeader
```
@Deprecated
public static void addHeader(HttpMessage message,
                                         String name,
                                         Object value)
```
    Deprecated. Use add(CharSequence, Object) instead.
    
    See Also:
    
    addHeader(HttpMessage, CharSequence, Object)
  - addHeader
```
@Deprecated
public static void addHeader(HttpMessage message,
                                         CharSequence name,
                                         Object value)
```
    Deprecated. Use add(CharSequence, Object) instead. Adds a new header with the specified name and value. If the specified value is not a String, it is converted into a String by Object.toString(), except for Date and Calendar which are formatted to the date format defined in RFC2616.
  - removeHeader
```
@Deprecated
public static void removeHeader(HttpMessage message,
                                            String name)
```
    Deprecated. Use remove(CharSequence) instead.
    
    See Also:
    
    removeHeader(HttpMessage, CharSequence)
  - removeHeader
```
@Deprecated
public static void removeHeader(HttpMessage message,
                                            CharSequence name)
```
    Deprecated. Use remove(CharSequence) instead. Removes the header with the specified name.
  - clearHeaders
```
@Deprecated
public static void clearHeaders(HttpMessage message)
```
    Deprecated. Use clear() instead. Removes all headers from the specified message.
  - getIntHeader
```
@Deprecated
public static int getIntHeader(HttpMessage message,
                                           String name)
```
    Deprecated. Use getInt(CharSequence) instead.
    
    See Also:
    
    getIntHeader(HttpMessage, CharSequence)
  - getIntHeader
```
@Deprecated
public static int getIntHeader(HttpMessage message,
                                           CharSequence name)
```
    Deprecated. Use getInt(CharSequence) instead. Returns the integer header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value
    
    Throws:
    
    NumberFormatException - if there is no such header or the header value is not a number
  - getIntHeader
```
@Deprecated
public static int getIntHeader(HttpMessage message,
                                           String name,
                                           int defaultValue)
```
    Deprecated. Use getInt(CharSequence, int) instead.
    
    See Also:
    
    getIntHeader(HttpMessage, CharSequence, int)
  - getIntHeader
```
@Deprecated
public static int getIntHeader(HttpMessage message,
                                           CharSequence name,
                                           int defaultValue)
```
    Deprecated. Use getInt(CharSequence, int) instead. Returns the integer header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value or the defaultValue if there is no such header or the header value is not a number
  - setIntHeader
```
@Deprecated
public static void setIntHeader(HttpMessage message,
                                            String name,
                                            int value)
```
    Deprecated. Use setInt(CharSequence, int) instead.
    
    See Also:
    
    setIntHeader(HttpMessage, CharSequence, int)
  - setIntHeader
```
@Deprecated
public static void setIntHeader(HttpMessage message,
                                            CharSequence name,
                                            int value)
```
    Deprecated. Use setInt(CharSequence, int) instead. Sets a new integer header with the specified name and value. If there is an existing header with the same name, the existing header is removed.
  - setIntHeader
```
@Deprecated
public static void setIntHeader(HttpMessage message,
                                            String name,
                                            Iterable<Integer> values)
```
    Deprecated. Use set(CharSequence, Iterable) instead.
    
    See Also:
    
    setIntHeader(HttpMessage, CharSequence, Iterable)
  - setIntHeader
```
@Deprecated
public static void setIntHeader(HttpMessage message,
                                            CharSequence name,
                                            Iterable<Integer> values)
```
    Deprecated. Use set(CharSequence, Iterable) instead. Sets a new integer header with the specified name and values. If there is an existing header with the same name, the existing header is removed.
  - addIntHeader
```
@Deprecated
public static void addIntHeader(HttpMessage message,
                                            String name,
                                            int value)
```
    Deprecated. Use add(CharSequence, Iterable) instead.
    
    See Also:
    
    addIntHeader(HttpMessage, CharSequence, int)
  - addIntHeader
```
@Deprecated
public static void addIntHeader(HttpMessage message,
                                            CharSequence name,
                                            int value)
```
    Deprecated. Use addInt(CharSequence, int) instead. Adds a new integer header with the specified name and value.
  - getDateHeader
```
@Deprecated
public static Date getDateHeader(HttpMessage message,
                                             String name)
                                      throws ParseException
```
    Deprecated. Use getTimeMillis(CharSequence) instead.
    
    Throws:
    
    ParseException
    
    See Also:
    
    getDateHeader(HttpMessage, CharSequence)
  - getDateHeader
```
@Deprecated
public static Date getDateHeader(HttpMessage message,
                                             CharSequence name)
                                      throws ParseException
```
    Deprecated. Use getTimeMillis(CharSequence) instead. Returns the date header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value
    
    Throws:
    
    ParseException - if there is no such header or the header value is not a formatted date
  - getDateHeader
```
@Deprecated
public static Date getDateHeader(HttpMessage message,
                                             String name,
                                             Date defaultValue)
```
    Deprecated. Use getTimeMillis(CharSequence, long) instead.
    
    See Also:
    
    getDateHeader(HttpMessage, CharSequence, Date)
  - getDateHeader
```
@Deprecated
public static Date getDateHeader(HttpMessage message,
                                             CharSequence name,
                                             Date defaultValue)
```
    Deprecated. Use getTimeMillis(CharSequence, long) instead. Returns the date header value with the specified header name. If there are more than one header value for the specified header name, the first value is returned.
    
    Returns:
    
    the header value or the defaultValue if there is no such header or the header value is not a formatted date
  - setDateHeader
```
@Deprecated
public static void setDateHeader(HttpMessage message,
                                             String name,
                                             Date value)
```
    Deprecated. Use set(CharSequence, Object) instead.
    
    See Also:
    
    setDateHeader(HttpMessage, CharSequence, Date)
  - setDateHeader
```
@Deprecated
public static void setDateHeader(HttpMessage message,
                                             CharSequence name,
                                             Date value)
```
    Deprecated. Use set(CharSequence, Object) instead. Sets a new date header with the specified name and value. If there is an existing header with the same name, the existing header is removed. The specified value is formatted as defined in RFC2616
  - setDateHeader
```
@Deprecated
public static void setDateHeader(HttpMessage message,
                                             String name,
                                             Iterable<Date> values)
```
    Deprecated. Use set(CharSequence, Iterable) instead.
    
    See Also:
    
    setDateHeader(HttpMessage, CharSequence, Iterable)
  - setDateHeader
```
@Deprecated
public static void setDateHeader(HttpMessage message,
                                             CharSequence name,
                                             Iterable<Date> values)
```
    Deprecated. Use set(CharSequence, Iterable) instead. Sets a new date header with the specified name and values. If there is an existing header with the same name, the existing header is removed. The specified values are formatted as defined in RFC2616
  - addDateHeader
```
@Deprecated
public static void addDateHeader(HttpMessage message,
                                             String name,
                                             Date value)
```
    Deprecated. Use add(CharSequence, Object) instead.
    
    See Also:
    
    addDateHeader(HttpMessage, CharSequence, Date)
  - addDateHeader
```
@Deprecated
public static void addDateHeader(HttpMessage message,
                                             CharSequence name,
                                             Date value)
```
    Deprecated. Use add(CharSequence, Object) instead. Adds a new date header with the specified name and value. The specified value is formatted as defined in RFC2616
  - getContentLength
```
@Deprecated
public static long getContentLength(HttpMessage message)
```
    Deprecated. Use HttpUtil.getContentLength(HttpMessage) instead. Returns the length of the content. Please note that this value is not retrieved from ByteBufHolder.content() but from the "Content-Length" header, and thus they are independent from each other.
    
    Returns:
    
    the content length
    
    Throws:
    
    NumberFormatException - if the message does not have the "Content-Length" header or its value is not a number
  - getContentLength
```
@Deprecated
public static long getContentLength(HttpMessage message,
                                                long defaultValue)
```
    Deprecated. Use HttpUtil.getContentLength(HttpMessage, long) instead. Returns the length of the content. Please note that this value is not retrieved from ByteBufHolder.content() but from the "Content-Length" header, and thus they are independent from each other.
    
    Returns:
    
    the content length or defaultValue if this message does not have the "Content-Length" header or its value is not a number
  - setContentLength
```
@Deprecated
public static void setContentLength(HttpMessage message,
                                                long length)
```
    Deprecated. Use HttpUtil.setContentLength(HttpMessage, long) instead.
  - getHost
```
@Deprecated
public static String getHost(HttpMessage message)
```
    Deprecated. Use get(CharSequence) instead. Returns the value of the "Host" header.
  - getHost
```
@Deprecated
public static String getHost(HttpMessage message,
                                         String defaultValue)
```
    Deprecated. Use get(CharSequence, String) instead. Returns the value of the "Host" header. If there is no such header, the defaultValue is returned.
  - setHost
```
@Deprecated
public static void setHost(HttpMessage message,
                                       String value)
```
    Deprecated. Use set(CharSequence, Object) instead.
    
    See Also:
    
    setHost(HttpMessage, CharSequence)
  - setHost
```
@Deprecated
public static void setHost(HttpMessage message,
                                       CharSequence value)
```
    Deprecated. Use set(CharSequence, Object) instead. Sets the "Host" header.
  - getDate
```
@Deprecated
public static Date getDate(HttpMessage message)
                                throws ParseException
```
    Deprecated. Use getTimeMillis(CharSequence) instead. Returns the value of the "Date" header.
    
    Throws:
    
    ParseException - if there is no such header or the header value is not a formatted date
  - getDate
```
@Deprecated
public static Date getDate(HttpMessage message,
                                       Date defaultValue)
```
    Deprecated. Use getTimeMillis(CharSequence, long) instead. Returns the value of the "Date" header. If there is no such header or the header is not a formatted date, the defaultValue is returned.
  - setDate
```
@Deprecated
public static void setDate(HttpMessage message,
                                       Date value)
```
    Deprecated. Use set(CharSequence, Object) instead. Sets the "Date" header.
  - is100ContinueExpected
```
@Deprecated
public static boolean is100ContinueExpected(HttpMessage message)
```
    Deprecated. Use HttpUtil.is100ContinueExpected(HttpMessage) instead. Returns true if and only if the specified message contains the "Expect: 100-continue" header.
  - set100ContinueExpected
```
@Deprecated
public static void set100ContinueExpected(HttpMessage message)
```
    Deprecated. Use HttpUtil.set100ContinueExpected(HttpMessage, boolean) instead. Sets the "Expect: 100-continue" header to the specified message. If there is any existing "Expect" header, they are replaced with the new one.
  - set100ContinueExpected
```
@Deprecated
public static void set100ContinueExpected(HttpMessage message,
                                                      boolean set)
```
    Deprecated. Use HttpUtil.set100ContinueExpected(HttpMessage, boolean) instead. Sets or removes the "Expect: 100-continue" header to / from the specified message. If set is true, the "Expect: 100-continue" header is set and all other previous "Expect" headers are removed. Otherwise, all "Expect" headers are removed completely.
  - isTransferEncodingChunked
```
@Deprecated
public static boolean isTransferEncodingChunked(HttpMessage message)
```
    Deprecated. Use HttpUtil.isTransferEncodingChunked(HttpMessage) instead. Checks to see if the transfer encoding in a specified HttpMessage is chunked
    
    Parameters:
    
    message - The message to check
    
    Returns:
    
    True if transfer encoding is chunked, otherwise false
  - removeTransferEncodingChunked
```
@Deprecated
public static void removeTransferEncodingChunked(HttpMessage m)
```
    Deprecated. Use HttpUtil.setTransferEncodingChunked(HttpMessage, boolean) instead.
  - setTransferEncodingChunked
```
@Deprecated
public static void setTransferEncodingChunked(HttpMessage m)
```
    Deprecated. Use HttpUtil.setTransferEncodingChunked(HttpMessage, boolean) instead.
  - isContentLengthSet
```
@Deprecated
public static boolean isContentLengthSet(HttpMessage m)
```
    Deprecated. Use HttpUtil.isContentLengthSet(HttpMessage) instead.
  - equalsIgnoreCase
```
@Deprecated
public static boolean equalsIgnoreCase(CharSequence name1,
                                                   CharSequence name2)
```
    Deprecated. Use AsciiString.contentEqualsIgnoreCase(CharSequence, CharSequence) instead.
  - encodeAscii
```
public static void encodeAscii(CharSequence seq,
                               ByteBuf buf)
```
  - newEntity
```
@Deprecated
public static CharSequence newEntity(String name)
```
    Deprecated. Use AsciiString instead.
    Create a new CharSequence which is optimized for reuse as HttpHeaders name or value. So if you have a Header name or value that you want to reuse you should make use of this.
  - get
```
public abstract String get(String name)
```
    See Also:
    
    get(CharSequence)
  - get
```
public String get(CharSequence name)
```
    Returns the value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - The name of the header to search
    
    Returns:
    
    The first header value or null if there is no such header
    
    See Also:
    
    getAsString(CharSequence)
  - get
```
public String get(CharSequence name,
                  String defaultValue)
```
    Returns the value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - The name of the header to search
    
    Returns:
    
    The first header value or defaultValue if there is no such header
  - getInt
```
public abstract Integer getInt(CharSequence name)
```
    Returns the integer value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    Returns:
    
    the first header value if the header is found and its value is an integer. null if there's no such header or its value is not an integer.
  - getInt
```
public abstract int getInt(CharSequence name,
                           int defaultValue)
```
    Returns the integer value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    defaultValue - the default value
    
    Returns:
    
    the first header value if the header is found and its value is an integer. defaultValue if there's no such header or its value is not an integer.
  - getShort
```
public abstract Short getShort(CharSequence name)
```
    Returns the short value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    Returns:
    
    the first header value if the header is found and its value is a short. null if there's no such header or its value is not a short.
  - getShort
```
public abstract short getShort(CharSequence name,
                               short defaultValue)
```
    Returns the short value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    defaultValue - the default value
    
    Returns:
    
    the first header value if the header is found and its value is a short. defaultValue if there's no such header or its value is not a short.
  - getTimeMillis
```
public abstract Long getTimeMillis(CharSequence name)
```
    Returns the date value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    Returns:
    
    the first header value if the header is found and its value is a date. null if there's no such header or its value is not a date.
  - getTimeMillis
```
public abstract long getTimeMillis(CharSequence name,
                                   long defaultValue)
```
    Returns the date value of a header with the specified name. If there are more than one values for the specified name, the first value is returned.
    
    Parameters:
    
    name - the name of the header to search
    
    defaultValue - the default value
    
    Returns:
    
    the first header value if the header is found and its value is a date. defaultValue if there's no such header or its value is not a date.
  - getAll
```
public abstract List<String> getAll(String name)
```
    See Also:
    
    getAll(CharSequence)
  - getAll
```
public List<String> getAll(CharSequence name)
```
    Returns the values of headers with the specified name
    
    Parameters:
    
    name - The name of the headers to search
    
    Returns:
    
    A List of header values which will be empty if no values are found
    
    See Also:
    
    getAllAsString(CharSequence)
  - entries
```
public abstract List<Map.Entry<String,String>> entries()
```
    Returns a new List that contains all headers in this object. Note that modifying the returned List will not affect the state of this object. If you intend to enumerate over the header entries only, use iterator() instead, which has much less overhead.
    
    See Also:
    
    iteratorCharSequence()
  - contains
```
public abstract boolean contains(String name)
```
    See Also:
    
    contains(CharSequence)
  - iterator
```
@Deprecated
public abstract Iterator<Map.Entry<String,String>> iterator()
```
    Deprecated. It is preferred to use iteratorCharSequence() unless you need String. If String is required then use iteratorAsString().
    
    Specified by:
    
    iterator in interface Iterable<Map.Entry<String,String>>
  - iteratorCharSequence
```
public abstract Iterator<Map.Entry<CharSequence,CharSequence>> iteratorCharSequence()
```
    Returns:
    
    Iterator over the name/value header pairs.
  - contains
```
public boolean contains(CharSequence name)
```
    Checks to see if there is a header with the specified name
    
    Parameters:
    
    name - The name of the header to search for
    
    Returns:
    
    True if at least one header is found
  - isEmpty
```
public abstract boolean isEmpty()
```
    Checks if no header exists.
  - size
```
public abstract int size()
```
    Returns the number of headers in this object.
  - names
```
public abstract Set<String> names()
```
    Returns a new Set that contains the names of all headers in this object. Note that modifying the returned Set will not affect the state of this object. If you intend to enumerate over the header entries only, use iterator() instead, which has much less overhead.
  - add
```
public abstract HttpHeaders add(String name,
                                Object value)
```
    See Also:
    
    add(CharSequence, Object)
  - add
```
public HttpHeaders add(CharSequence name,
                       Object value)
```
    Adds a new header with the specified name and value. If the specified value is not a String, it is converted into a String by Object.toString(), except in the cases of Date and Calendar, which are formatted to the date format defined in RFC2616.
    
    Parameters:
    
    name - The name of the header being added
    
    value - The value of the header being added
    
    Returns:
    
    this
  - add
```
public abstract HttpHeaders add(String name,
                                Iterable<?> values)
```
    See Also:
    
    add(CharSequence, Iterable)
  - add
```
public HttpHeaders add(CharSequence name,
                       Iterable<?> values)
```
    Adds a new header with the specified name and values. This getMethod can be represented approximately as the following code:
```
 for (Object v: values) {
     if (v == null) {
         break;
     }
     headers.add(name, v);
 }
 
```
    Parameters:
    
    name - The name of the headers being set
    
    values - The values of the headers being set
    
    Returns:
    
    this
  - add
```
public HttpHeaders add(HttpHeaders headers)
```
    Adds all header entries of the specified headers.
    
    Returns:
    
    this
  - addInt
```
public abstract HttpHeaders addInt(CharSequence name,
                                   int value)
```
    Add the name to value.
    
    Parameters:
    
    name - The name to modify
    
    value - The value
    
    Returns:
    
    this
  - addShort
```
public abstract HttpHeaders addShort(CharSequence name,
                                     short value)
```
    Add the name to value.
    
    Parameters:
    
    name - The name to modify
    
    value - The value
    
    Returns:
    
    this
  - set
```
public abstract HttpHeaders set(String name,
                                Object value)
```
    See Also:
    
    set(CharSequence, Object)
  - set
```
public HttpHeaders set(CharSequence name,
                       Object value)
```
    Sets a header with the specified name and value. If there is an existing header with the same name, it is removed. If the specified value is not a String, it is converted into a String by Object.toString(), except for Date and Calendar, which are formatted to the date format defined in RFC2616.
    
    Parameters:
    
    name - The name of the header being set
    
    value - The value of the header being set
    
    Returns:
    
    this
  - set
```
public abstract HttpHeaders set(String name,
                                Iterable<?> values)
```
    See Also:
    
    set(CharSequence, Iterable)
  - set
```
public HttpHeaders set(CharSequence name,
                       Iterable<?> values)
```
    Sets a header with the specified name and values. If there is an existing header with the same name, it is removed. This getMethod can be represented approximately as the following code:
```
 headers.remove(name);
 for (Object v: values) {
     if (v == null) {
         break;
     }
     headers.add(name, v);
 }
 
```
    Parameters:
    
    name - The name of the headers being set
    
    values - The values of the headers being set
    
    Returns:
    
    this
  - set
```
public HttpHeaders set(HttpHeaders headers)
```
    Cleans the current header entries and copies all header entries of the specified headers.
    
    Returns:
    
    this
  - setAll
```
public HttpHeaders setAll(HttpHeaders headers)
```
    Retains all current headers but calls set(String, Object) for each entry in headers
    
    Parameters:
    
    headers - The headers used to set(String, Object) values in this instance
    
    Returns:
    
    this
  - setInt
```
public abstract HttpHeaders setInt(CharSequence name,
                                   int value)
```
    Set the name to value. This will remove all previous values associated with name.
    
    Parameters:
    
    name - The name to modify
    
    value - The value
    
    Returns:
    
    this
  - setShort
```
public abstract HttpHeaders setShort(CharSequence name,
                                     short value)
```
    Set the name to value. This will remove all previous values associated with name.
    
    Parameters:
    
    name - The name to modify
    
    value - The value
    
    Returns:
    
    this
  - remove
```
public abstract HttpHeaders remove(String name)
```
    See Also:
    
    remove(CharSequence)
  - remove
```
public HttpHeaders remove(CharSequence name)
```
    Removes the header with the specified name.
    
    Parameters:
    
    name - The name of the header to remove
    
    Returns:
    
    this
  - clear
```
public abstract HttpHeaders clear()
```
    Removes all headers from this HttpMessage.
    
    Returns:
    
    this
  - contains
```
public boolean contains(String name,
                        String value,
                        boolean ignoreCase)
```
    See Also:
    
    contains(CharSequence, CharSequence, boolean)
  - containsValue
```
public boolean containsValue(CharSequence name,
                             CharSequence value,
                             boolean ignoreCase)
```
    Returns true if a header with the name and value exists, false otherwise. This also handles multiple values that are separated with a ,.
    If ignoreCase is true then a case insensitive compare is done on the value.
    
    Parameters:
    
    name - the name of the header to find
    
    value - the value of the header to find
    
    ignoreCase - true then a case insensitive compare is run to compare values. otherwise a case sensitive compare is run to compare values.
  - getAsString
```
public final String getAsString(CharSequence name)
```
    Headers.get(Object) and convert the result to a String.
    
    Parameters:
    
    name - the name of the header to retrieve
    
    Returns:
    
    the first header value if the header is found. null if there's no such header.
  - getAllAsString
```
public final List<String> getAllAsString(CharSequence name)
```
    Headers.getAll(Object) and convert each element of List to a String.
    
    Parameters:
    
    name - the name of the header to retrieve
    
    Returns:
    
    a List of header values or an empty List if no values are found.
  - iteratorAsString
```
public final Iterator<Map.Entry<String,String>> iteratorAsString()
```
    Iterator that converts each Map.Entry's key and value to a String.
  - contains
```
public boolean contains(CharSequence name,
                        CharSequence value,
                        boolean ignoreCase)
```
    Returns true if a header with the name and value exists, false otherwise.
    If ignoreCase is true then a case insensitive compare is done on the value.
    
    Parameters:
    
    name - the name of the header to find
    
    value - the value of the header to find
    
    ignoreCase - true then a case insensitive compare is run to compare values. otherwise a case sensitive compare is run to compare values.

Class HttpHeaders

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface java.lang.Iterable

Field Detail

EMPTY_HEADERS

Constructor Detail

HttpHeaders

Method Detail

isKeepAlive

setKeepAlive

getHeader

getHeader

getHeader

getHeader

setHeader

setHeader

setHeader

setHeader

addHeader

addHeader

removeHeader

removeHeader

clearHeaders

getIntHeader

getIntHeader

getIntHeader

getIntHeader

setIntHeader

setIntHeader

setIntHeader

setIntHeader

addIntHeader

addIntHeader

getDateHeader

getDateHeader

getDateHeader

getDateHeader

setDateHeader

setDateHeader

setDateHeader

setDateHeader

addDateHeader

addDateHeader

getContentLength

getContentLength

setContentLength

getHost

getHost

setHost

setHost

getDate

getDate

setDate

is100ContinueExpected

set100ContinueExpected

set100ContinueExpected

isTransferEncodingChunked

removeTransferEncodingChunked

setTransferEncodingChunked

isContentLengthSet

equalsIgnoreCase

encodeAscii

newEntity

get

get

get

getInt

getInt

getShort

getShort

getTimeMillis

getTimeMillis

getAll

getAll

entries

contains