All Superinterfaces:

Headers, Parameters
```
public interface WebClientRequestHeaders
extends Headers
```
Headers that can be modified (until request is sent) for outbound request.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`List<MediaType>`	`acceptedTypes()`	Returns a list of acceptedTypes ("Accept" header) content types in quality factor order.
`WebClientRequestHeaders`	`addAccept(MediaType mediaType)`	Add accepted `MediaType`.
`WebClientRequestHeaders`	`addCookie(String name, String value)`	Add a cookie to the request.
`void`	`clear()`	Clears all currently set headers.
`Optional<Long>`	`contentLength()`	Returns content length if known.
`WebClientRequestHeaders`	`contentLength(long length)`	Set a content length.
`MediaType`	`contentType()`	Returns content type of the request.
`WebClientRequestHeaders`	`contentType(MediaType contentType)`	Set a content type.
`List<String>`	`ifMatch()`	Returns value of header "If-Match".
`WebClientRequestHeaders`	`ifMatch(String... etags)`	Sets `Http.Header.IF_MATCH` header to specific etags.
`Optional<ZonedDateTime>`	`ifModifiedSince()`	Returns value of header "If-Modified-Since".
`WebClientRequestHeaders`	`ifModifiedSince(ZonedDateTime time)`	Sets `Http.Header.IF_MODIFIED_SINCE` header to specific time.
`List<String>`	`ifNoneMatch()`	Returns value of header "If-None-Match".
`WebClientRequestHeaders`	`ifNoneMatch(String... etags)`	Sets `Http.Header.IF_NONE_MATCH` header to specific etags.
`WebClientRequestHeaders`	`ifRange(String etag)`	Sets `Http.Header.IF_RANGE` header to specific etag.
`WebClientRequestHeaders`	`ifRange(ZonedDateTime time)`	Sets `Http.Header.IF_RANGE` header to specific time.
`Optional<ZonedDateTime>`	`ifRangeDate()`	Returns value of header "If-Range" as a `ZonedDateTime`.
`Optional<String>`	`ifRangeString()`	Returns value of header "If-Range" as a `String`.
`Optional<ZonedDateTime>`	`ifUnmodifiedSince()`	Returns value of header "If-Unmodified-Since".
`WebClientRequestHeaders`	`ifUnmodifiedSince(ZonedDateTime time)`	Sets `Http.Header.IF_UNMODIFIED_SINCE` header to specific time.
`WebClientRequestHeaders`	`unsetHeader(String name)`	Remove a header if set.

Methods inherited from interface io.helidon.common.http.Headers
all, value, values

Methods inherited from interface io.helidon.common.http.Parameters
add, add, addAll, computeIfAbsent, computeSingleIfAbsent, first, put, put, putAll, putIfAbsent, putIfAbsent, remove, toMap

- Method Detail
  - unsetHeader
```
WebClientRequestHeaders unsetHeader(String name)
```
    Remove a header if set.
    
    Parameters:
    
    name - header name
    
    Returns:
    
    updated headers instance
  - addCookie
```
WebClientRequestHeaders addCookie(String name,
                                  String value)
```
    Add a cookie to the request.
    
    Parameters:
    
    name - cookie name
    
    value - cookie value
    
    Returns:
    
    updated headers instance
  - contentType
```
WebClientRequestHeaders contentType(MediaType contentType)
```
    Set a content type. This method is optional if you use a writer for a specific type. If the content type is explicitly defined, writer will NOT override it.
    
    Parameters:
    
    contentType - content type of the request
    
    Returns:
    
    updated headers instance
  - contentLength
```
WebClientRequestHeaders contentLength(long length)
```
    Set a content length. This method is optional. Use only when you know the exact length of entity in bytes.
    
    Parameters:
    
    length - content length of entity
    
    Returns:
    
    updated headers instance
  - addAccept
```
WebClientRequestHeaders addAccept(MediaType mediaType)
```
    Add accepted MediaType. Supports quality factor and wildcards. Ordered by invocation order.
    
    Parameters:
    
    mediaType - media type to accept, with optional quality factor
    
    Returns:
    
    updated headers instance
  - ifModifiedSince
```
WebClientRequestHeaders ifModifiedSince(ZonedDateTime time)
```
    Sets Http.Header.IF_MODIFIED_SINCE header to specific time.
    
    Parameters:
    
    time - zoned date time
    
    Returns:
    
    updated headers instance
  - ifUnmodifiedSince
```
WebClientRequestHeaders ifUnmodifiedSince(ZonedDateTime time)
```
    Sets Http.Header.IF_UNMODIFIED_SINCE header to specific time.
    
    Parameters:
    
    time - zoned date time
    
    Returns:
    
    updated headers instance
  - ifNoneMatch
```
WebClientRequestHeaders ifNoneMatch(String... etags)
```
    Sets Http.Header.IF_NONE_MATCH header to specific etags.
    
    Parameters:
    
    etags - etags
    
    Returns:
    
    updated headers instance
  - ifMatch
```
WebClientRequestHeaders ifMatch(String... etags)
```
    Sets Http.Header.IF_MATCH header to specific etags.
    
    Parameters:
    
    etags - etags
    
    Returns:
    
    updated headers instance
  - ifRange
```
WebClientRequestHeaders ifRange(ZonedDateTime time)
```
    Sets Http.Header.IF_RANGE header to specific time.
    
    Parameters:
    
    time - zoned date time
    
    Returns:
    
    updated headers instance
  - ifRange
```
WebClientRequestHeaders ifRange(String etag)
```
    Sets Http.Header.IF_RANGE header to specific etag.
    
    Parameters:
    
    etag - etag
    
    Returns:
    
    updated headers instance
  - acceptedTypes
```
List<MediaType> acceptedTypes()
```
    Returns a list of acceptedTypes ("Accept" header) content types in quality factor order. Never null.
    
    Returns:
    
    A list of acceptedTypes media types.
  - contentType
```
MediaType contentType()
```
    Returns content type of the request. If there is no explicit content set, then MediaType.WILDCARD is returned.
    
    Returns:
    
    content type of the request
  - contentLength
```
Optional<Long> contentLength()
```
    Returns content length if known.
    
    Returns:
    
    content length
  - ifModifiedSince
```
Optional<ZonedDateTime> ifModifiedSince()
```
    Returns value of header "If-Modified-Since".
    
    Returns:
    
    IF_MODIFIED_SINCE header value.
  - ifUnmodifiedSince
```
Optional<ZonedDateTime> ifUnmodifiedSince()
```
    Returns value of header "If-Unmodified-Since".
    
    Returns:
    
    IF_UNMODIFIED_SINCE header value.
  - ifNoneMatch
```
List<String> ifNoneMatch()
```
    Returns value of header "If-None-Match". Empty List is returned if this header is not set.
    
    Returns:
    
    A list of etags.
  - ifMatch
```
List<String> ifMatch()
```
    Returns value of header "If-Match". Empty List is returned if this header is not set.
    
    Returns:
    
    A list of etags.
  - ifRangeDate
```
Optional<ZonedDateTime> ifRangeDate()
```
    Returns value of header "If-Range" as a ZonedDateTime.
    
    Returns:
    
    formatted header IF_RANGE as ZonedDateTime
  - ifRangeString
```
Optional<String> ifRangeString()
```
    Returns value of header "If-Range" as a String.
    
    Returns:
    
    formatted header IF_RANGE as String
  - clear
```
void clear()
```
    Clears all currently set headers.

Interface WebClientRequestHeaders

Method Summary

Methods inherited from interface io.helidon.common.http.Headers

Methods inherited from interface io.helidon.common.http.Parameters

Method Detail

unsetHeader

addCookie

contentType

contentLength

addAccept

ifModifiedSince

ifUnmodifiedSince

ifNoneMatch

ifMatch

ifRange

ifRange

acceptedTypes

contentType

contentLength

ifModifiedSince

ifUnmodifiedSince

ifNoneMatch

ifMatch

ifRangeDate

ifRangeString

clear