line = vstrallocf("FEATURES %s", our_features_string);
if(exchange(line) == 0) {
their_feature_string = stralloc(server_line+13);
indexsrv_features = am_string_to_feature(their_feature_string);
line = vstrallocf("FEATURES %s", our_features_string);
if(exchange(line) == 0) {
their_feature_string = stralloc(server_line+13);
indexsrv_features = am_string_to_feature(their_feature_string);