Nginx masquerade user-agent etc

Example Modify the configuration file nginx.conf

server { listen 80; Resolver 8.8.8.8; Location / {set $agent "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; En-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5"; proxy_pass $scheme://$host$request_uri; proxy_set_header Host $http_host; proxy_set_header Connection ''; proxy_set_header Proxy-Connection '' ; proxy_set_header Accept-Charset ''; proxy_set_header Accept-Encoding ''; proxy_set_header Accept-Language ''; proxy_set_header Accept ''; proxy_set_header Pragma 'no-cache'; proxy_set_header Cache-Control 'no-cache'; #proxy_set_header If-Modified-Since ''; proxy_buffers 256 4k; proxy_max_temp_file_size 0k; proxy_set_header User-Agent $agent; }}