check_comm
err = check_comm(switch_tracking, event, "Test COMM 1", 0);
err = check_comm(switch_tracking, event, "Test COMM 2", 1);
err = check_comm(switch_tracking, event, "Test COMM 3", 2);
err = check_comm(switch_tracking, event, "Test COMM 4", 3);
const char *check_comm = getenv(CHECK_COMM);
if (argc >= 2 || check_comm) {
if (check_comm) {
if (strcmp(buf, check_comm)) {
buf, check_comm);