ngx_http_upstream_upgraded_read_upstream   62 src/http/ngx_http_upstream.c static void ngx_http_upstream_upgraded_read_upstream(ngx_http_request_t *r,
ngx_http_upstream_upgraded_read_upstream 2979 src/http/ngx_http_upstream.c     u->read_event_handler = ngx_http_upstream_upgraded_read_upstream;