request_header_max_size

request_header_max_size

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This directive places an upper limit on the size of headers in an HTTP request. When Squid receives an HTTP request with headers that exceed this value, it returns a 413 (Request Entity Too Large) error response. In most cases, request headers are smaller than 512 bytes. This directive exists to catch certain abnormal conditions, such as persistent connection bugs , buffer overflow attempts, and denial-of-service attacks.

Syntax	request_header_max_size size-specification
Default	request_header_max_size 10 KB
Example	request_header_max_size 35 KB
Related	request_body_max_size , reply_body_max_size