keyserver buffer size limit

src/freedombone-app-keyserver

         echo "    add_header         Via \"1.1 $KEYSERVER_DOMAIN_NAME:11371 (nginx)\";" >> $keyserver_nginx_site
         echo '    proxy_ignore_client_abort on;' >> $keyserver_nginx_site
         echo '    client_max_body_size 8m;' >> $keyserver_nginx_site
+        echo '    client_body_buffer_size 128k;' >> $keyserver_nginx_site
         echo '  }' >> $keyserver_nginx_site
         echo '}' >> $keyserver_nginx_site
         echo '' >> $keyserver_nginx_site
         echo "    add_header         Via \"1.1 $KEYSERVER_DOMAIN_NAME:11372 (nginx)\";" >> $keyserver_nginx_site
         echo '    proxy_ignore_client_abort on;' >> $keyserver_nginx_site
         echo '    client_max_body_size 8m;' >> $keyserver_nginx_site
+        echo '    client_body_buffer_size 128k;' >> $keyserver_nginx_site
         echo '  }' >> $keyserver_nginx_site
         echo '}' >> $keyserver_nginx_site
         echo '' >> $keyserver_nginx_site
     echo "    add_header         Via \"1.1 $KEYSERVER_DOMAIN_NAME:$KEYSERVER_ONION_PORT (nginx)\";" >> $keyserver_nginx_site
     echo '    proxy_ignore_client_abort on;' >> $keyserver_nginx_site
     echo '    client_max_body_size 8m;' >> $keyserver_nginx_site
+    echo '    client_body_buffer_size 128k;' >> $keyserver_nginx_site
     echo '  }' >> $keyserver_nginx_site
     echo '}' >> $keyserver_nginx_site