Sippet.Message.has_header-question-mark

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has_header?(message, header)

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Specs

has_header?(t(), header()) :: boolean()

Returns whether a given header exists in the given message.

Examples:

iex> request =
...>   Sippet.Message.build_request(:invite, "sip:foo@bar.com")
...>   |> Sippet.Message.put_header(:cseq, {1, :invite})
iex> request |> Sippet.Message.has_header?(:cseq)
true