header field
[/ˈhɛdər fiːld/]
nounpl: header fields
campo de cabeçalho
1. In email and HTTP communications, a field in the header section that contains metadata about the message or request, such as sender, recipient, subject, content type, or date
The email header field 'From' indicates the sender's address.
O campo de cabeçalho 'De' do email indica o endereço do remetente.
2. In data transmission, any labeled information field that precedes the main data payload
The HTTP header field 'Content-Type' specifies the format of the response body.
O campo de cabeçalho HTTP 'Content-Type' especifica o formato do corpo da resposta.
3. In networking protocols, a designated section containing control information necessary for proper message delivery and processing
Header fields in TCP packets contain port numbers and sequence information.
Os campos de cabeçalho em pacotes TCP contêm números de porta e informações de sequência.
This is a technical term primarily used in IT, software development, and telecommunications. It is universally understood in professional and academic computing contexts in both Brazil and Portugal without regional variation. The term is borrowed from English in technical documentation worldwide.
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