key_start          35 http/modules/ngx_http_proxy_module.c     ngx_str_t                      key_start;
key_start         706 http/modules/ngx_http_proxy_module.c     ctx->vars.key_start = u->schema;
key_start         764 http/modules/ngx_http_proxy_module.c     *key = ctx->vars.key_start;
key_start        2436 http/modules/ngx_http_proxy_module.c     plcf->vars.key_start = plcf->vars.schema;
key_start        2799 http/modules/ngx_http_proxy_module.c         v->key_start.len += v->host_header.len;
key_start        2804 http/modules/ngx_http_proxy_module.c         v->key_start.len += sizeof("unix:") - 1 + u->host.len + 1;