More progress on code of the server_conn_fsm
Change-Id: Ibad10383fe9c4ab9e6b94382114747c21dae6c31
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f29e0d0c26
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@ -225,21 +225,152 @@ static const struct value_string server_conn_fsm_event_names[] = {
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{ 0, NULL }
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{ 0, NULL }
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};
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};
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/* representing a client-side connection to a RSPRO server */
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struct rspro_server_conn {
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/* state */
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struct ipa_client_conn *conn;
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struct osmo_fsm_inst *fi;
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/* our own component ID */
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struct app_comp_id own_comp_id;
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/* configuration */
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char *server_host;
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uint16_t server_port;
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};
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static void srvc_updown_cb(struct ipa_client_conn *conn, int up)
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{
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struct rspro_server_conn *srvc = conn->data;
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printf("RSPRO link to %s:%d %s\n", conn->addr, conn->port, up ? "UP" : "DOWN");
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osmo_fsm_inst_dispatch(srvc->fi, up ? SRVC_E_TCP_UP: SRVC_E_TCP_DOWN, 0);
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}
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static int srvc_read_cb(struct ipa_client_conn *conn, struct msgb *msg)
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{
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struct ipaccess_head *hh = (struct ipaccess_head *) msg->data;
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struct ipaccess_head_ext *he = (struct ipaccess_head_ext *) msgb_l2(msg);
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struct rspro_server_conn *srvc = conn->data;
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int rc;
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if (msgb_length(msg) < sizeof(*hh))
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goto invalid;
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msg->l2h = &hh->data[0];
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if (hh->proto != IPAC_PROTO_OSMO)
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goto invalid;
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if (!he || msgb_l2len(msg) < sizeof(*he))
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goto invalid;
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msg->l2h = &he->data[0];
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if (he->proto != IPAC_PROTO_EXT_RSPRO)
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goto invalid;
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printf("Received RSPRO %s\n", msgb_hexdump(msg));
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#if 0
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rc = bankd_handle_msg(srvc, msg);
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msgb_free(msg);
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return rc;
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#endif
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invalid:
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msgb_free(msg);
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return -1;
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}
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static void srvc_st_init_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv;
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int rc;
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srvc->conn = ipa_client_conn_create(srvc, NULL, 0, srvc->server_host, srvc->server_port,
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srvc_updown_cb, srvc_read_cb, NULL, srvc);
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if (!srvc->conn) {
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fprintf(stderr, "Unable to create socket: %s\n", strerror(errno));
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/* FIXME */
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}
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/* Attempt to connect TCP socket */
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rc = ipa_client_conn_open(srvc->conn);
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if (rc < 0) {
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fprintf(stderr, "Unable to connect: %s\n", strerror(errno));
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/* FIXME */
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}
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}
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static void srvc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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static void srvc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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{
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switch (event) {
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case SRVC_E_TCP_UP:
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osmo_fsm_inst_state_chg(fi, SRVC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void srvc_st_established_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv;
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RsproPDU_t *pdu;
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/* FIXME: Bankd in case of Bankd connection! */
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pdu = rspro_gen_ConnectClientReq(&srvc->own_comp_id, NULL);
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ipa_client_conn_send_rspro(srvc->conn, pdu);
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}
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}
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static void srvc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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static void srvc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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{
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switch (event) {
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case SRVC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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case SRVC_E_CLIENT_CONN_RES:
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/* somehow notify the main code? */
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osmo_fsm_inst_state_chg(fi, SRVC_ST_CONNECTED, 0, 0);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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}
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static void srvc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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static void srvc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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{
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switch (event) {
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case SRVC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void srvc_st_reestablish_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv;
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int rc;
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/* Attempt to connect TCP socket */
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rc = ipa_client_conn_open(srvc->conn);
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if (rc < 0) {
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fprintf(stderr, "Unable to connect RSPRO to %s:%d - %s\n",
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srvc->server_host, srvc->server_port, strerror(errno));
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/* FIXME: retry? Timer? Abort? */
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OSMO_ASSERT(0);
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}
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}
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}
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static void srvc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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static void srvc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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{
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switch (event) {
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case BDC_E_TCP_UP:
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osmo_fsm_inst_state_chg(fi, SRVC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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}
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static int server_conn_fsm_timer_cb(struct osmo_fsm_inst *fi)
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static int server_conn_fsm_timer_cb(struct osmo_fsm_inst *fi)
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@ -253,12 +384,14 @@ static const struct osmo_fsm_state server_conn_fsm_states[] = {
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.in_event_mask = S(SRVC_E_TCP_UP),
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.in_event_mask = S(SRVC_E_TCP_UP),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.action = srvc_st_init,
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.action = srvc_st_init,
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.onenter = srvc_st_init_onenter,
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},
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},
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[SRVC_ST_ESTABLISHED] = {
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[SRVC_ST_ESTABLISHED] = {
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.name = "ESTABLISHED",
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.name = "ESTABLISHED",
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.in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_CLIENT_CONN_RES),
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.in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_CLIENT_CONN_RES),
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.out_state_mask = S(SRVC_ST_CONNECTED) | S(SRVC_ST_REESTABLISH),
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.out_state_mask = S(SRVC_ST_CONNECTED) | S(SRVC_ST_REESTABLISH),
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.action = srvc_st_established,
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.action = srvc_st_established,
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.onenter = srvc_st_established_onenter,
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},
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},
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[SRVC_ST_CONNECTED] = {
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[SRVC_ST_CONNECTED] = {
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.name = "CONNECTED",
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.name = "CONNECTED",
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@ -271,6 +404,7 @@ static const struct osmo_fsm_state server_conn_fsm_states[] = {
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.in_event_mask = S(SRVC_E_TCP_UP),
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.in_event_mask = S(SRVC_E_TCP_UP),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.action = srvc_st_reestablish,
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.action = srvc_st_reestablish,
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.onenter = srvc_st_reestablish_onenter,
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},
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},
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};
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};
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@ -283,16 +417,16 @@ struct osmo_fsm remsim_client_server_fsm = {
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.event_names = server_conn_fsm_event_names,
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.event_names = server_conn_fsm_event_names,
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};
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};
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int server_conn_fsm_alloc(struct bankd_client *bc)
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int server_conn_fsm_alloc(struct rspro_server_conn *srvc)
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{
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{
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struct osmo_fsm_inst *fi;
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struct osmo_fsm_inst *fi;
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fi = osmo_fsm_inst_alloc(&remsim_client_server_fsm, bc, bc, LOGL_DEBUG, "server");
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fi = osmo_fsm_inst_alloc(&remsim_client_server_fsm, srvc, srvc, LOGL_DEBUG, "server");
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if (!fi)
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if (!fi)
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return -1;
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return -1;
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bc->srv_fi = fi;
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srvc->fi = fi;
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/* onenter of the initial state is not automatically executed by osmo_fsm :( */
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/* onenter of the initial state is not automatically executed by osmo_fsm :( */
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///srvc_st_init_onenter(fi, 0);
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srvc_st_init_onenter(fi, 0);
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return 0;
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return 0;
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}
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}
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