+ size_t valid_len;
+
+ parser->_key.len = colon - buffer->data;
+ parser->_key.str = estrndup(buffer->data, parser->_key.len);
+
+ valid_len = strspn(parser->_key.str, PHP_HTTP_HEADER_NAME_CHARS);
+ if (valid_len != parser->_key.len) {
+ php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to parser headers: unexpected character '0x%02x' at pos %zu of '%.*s'", parser->_key.str[valid_len], valid_len+1, (int) parser->_key.len, parser->_key.str);
+ PTR_SET(parser->_key.str, NULL);
+ return php_http_header_parser_state_push(parser, 1, PHP_HTTP_HEADER_PARSER_STATE_FAILURE);
+ }