My nginx server needs a request whose URI is about 4k long, it currently returns 414 with message Request-URI Too Long.

I looked online and added:

large_client_header_buffers 4 16k;

to the http block in nginx.conf, restarted nginx, still returns 414.

I also tried to add client_header_buffer_size and set to 16k and well but didn't help.

I have nginx 1.0.12 and built with the following options:

"--with-http_ssl_module",
"--with-http_gzip_static_module",
"--add-module=../git/nginx-x-rid-header",
"--with-ld-opt=-luuid",
"--with-http_stub_status_module"

Anybody has any insights on the 414 problem?