https://nginx.org/en/docs/http/ngx_http_core_module.html#large_client_header_buffers
| Syntax: | large_client_header_buffers |
|---|---|
| Default: |
large_client_header_buffers 4 8k; |
| Context: | http, server |
Sets the maximum number and size of
buffers used for reading large client request header.
A request line cannot exceed the size of one buffer, or the
414 (Request-URI Too Large)
error is returned to the client.
A request header field cannot exceed the size of one buffer as well, or the
400 (Bad Request)
error is returned to the client.
Buffers are allocated only on demand.
By default, the buffer size is equal to 8K bytes.
If after the end of request processing a connection is transitioned
into the keep-alive state, these buffers are released.