HeaderMismatch

Thrown when a request header disagrees with the request body.

class HeaderMismatch extends \Hazaar\MCP\Exception\ProtocolError

Extends: Hazaar\MCP\Exception\ProtocolError

The transport mirrors selected body fields into headers so intermediaries can route without parsing the body. The headers are optional — clients that carry everything in the body alone are not rejected for omitting them — but validating that the two agree when a header is present is mandatory: a load balancer trusting the header while the server executes on the body is a request-smuggling vector.

Methods

mismatch

Builds an exception for a header whose value disagrees with the request body.

public mismatch(string $header, string $headerValue, string $bodyValue): self

Returns: self

Parameters

Parameter	Type	Description
$header	string	the header name
$headerValue	string	the value received in the header
$bodyValue	string	the corresponding value found in the body

__construct

public __construct(string $reason): void

Parameters

Parameter	Type	Description
$reason	string

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Generated by Hazaar API Doc Generator on Sun, 23 Aug 2026 10:49:44 +0000