September 2002
Intermediate to advanced
656 pages
22h 14m
English
book
HTTP: The Definitive Guide
by David Gourley, Brian Totty, Marjorie Sayer, Anshu Aggarwal, Sailu Reddy
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Name
Max-Forwards
Synopsis
This header is used only with the TRACE method, to limit the number of proxies or other intermediaries that a request goes through. Its value is an integer. Each application that receives a TRACE request with this header should decrement the value before it forwards the request along.
If the value is zero when the application receives the request, it should send back a 200 OK response to the request, with an entity body containing the original request. If the Max-Forwards header is missing from a TRACE request, assume that there is no maximum number of forwards.
For other HTTP methods, this header should be ignored. See Section 3.3 for more on the TRACE method.
Type
Request header
Basic Syntax
Max-Forwards: 1*DIGIT
Example
Max-Forwards: 5
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