Function transit

modules/http2/h2_session.c:1436–1476

}

static void transit(h2_session *session, const char *action, h2_session_state nstate)
{
    int ostate;

    if (session->state != nstate) {
        ostate = session->state;

        ap_log_cerror(APLOG_MARK, APLOG_DEBUG, 0, session->c1,
                      H2_SSSN_LOG(APLOGNO(03078), session, 
                      "transit [%s] -- %s --> [%s]"), 
                      h2_session_state_str(ostate), action, 
                      h2_session_state_str(nstate));
        
        switch (session->state) {
            case H2_SESSION_ST_IDLE:
                if (!session->remote.emitted_count) {
                    /* on fresh connections, with async mpm, do not return
                     * to mpm for a second. This gives the first request a better
                     * chance to arrive (und connection leaving IDLE state).
                     * If we return to mpm right away, this connection has the
                     * same chance of being cleaned up by the mpm as connections
                     * that already served requests - not fair. */
                    ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c1,
                                  H2_SSSN_LOG("", session, "enter idle"));
                }
                else {
                    /* normal keepalive setup */
                    ap_log_cerror(APLOG_MARK, APLOG_TRACE1, 0, session->c1,
                                  H2_SSSN_LOG("", session, "enter keepalive"));
                }
                session->state = nstate;
                break;
            case H2_SESSION_ST_DONE:
                break;
            default:
                /* nop */
                session->state = nstate;
                break;
        }
    }
}

static void h2_session_ev_init(h2_session *session, int arg, const char *msg)
{