via              2051 http/ngx_http_core_module.c     if (r->headers_in.via == NULL) {
via               129 http/ngx_http_request.c     { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via),
via               186 http/ngx_http_request.h     ngx_table_elt_t                  *via;
via               125 http/ngx_http_variables.c       offsetof(ngx_http_request_t, headers_in.via), 0, 0 },