class

HTTP2::Headers

Inherits Enumerable < Reference < Object

An ordered, duplicate-preserving collection of HTTP fields.

Constructors

new(fields : Enumerable(Header))
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new(fields : Enumerable(Tuple(String, String)))
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new(fields : HTTP::Headers)

HTTP::Headers field names are case-insensitive (RFC 9110 §5.1) but HTTP/2 requires lowercase on the wire (RFC 9113 §8.2.1); downcasing here is lossless and lets stdlib-interop callers pass mixed-case names without tripping outbound validation. Values are untouched.

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Instance methods

==(other : Headers) : Bool
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[](name : String) : String

Returns the first field value with exactly matching lowercase name.

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[]=(name : String, value : String) : String
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[]?(name : String) : String | Nil
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add(name : String, value : String) : self

Appends a field without replacing existing fields of the same name.

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delete(name : String) : Nil
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dup

Returns a shallow copy of this object.

This allocates a new object and copies the contents of self into it.

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each

Must yield this collection's elements to the block.

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empty?

Returns true if self does not contain any element.

([] of Int32).empty? # => true
([1]).empty?         # => false
[nil, false].empty?  # => false
  • #present? returns the inverse.
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get_all(name : String) : Array(String)

Returns every value with exactly matching lowercase name, in wire order.

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has_key?(name : String) : Bool
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hash(hasher)

See Object#hash(hasher)

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size

Returns the number of elements in the collection.

[1, 2, 3, 4].size # => 4
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to_a

Returns an Array with all the elements in the collection.

(1..5).to_a # => [1, 2, 3, 4, 5]
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to_http_headers
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