1 /* Copyright 2011 NORDUnet A/S. All rights reserved.
2 See the file COPYING for licensing information. */
4 #if defined HAVE_CONFIG_H
9 #include <event2/event.h>
10 #include <radsec/radsec.h>
11 #include <radsec/radsec-impl.h>
17 /* Send one packet, the first in queue. */
19 _send (struct rs_connection *conn, int fd)
22 struct rs_packet *pkt = conn->out_queue;
25 assert (pkt->rpkt->data);
28 r = compat_send (fd, pkt->rpkt->data, pkt->rpkt->data_len, 0);
31 int sockerr = evutil_socket_geterror (pkt->conn->fd);
32 if (sockerr != EAGAIN)
33 rs_err_conn_push_fl (pkt->conn, RSE_SOCKERR, __FILE__, __LINE__,
34 "%d: send: %d (%s)", fd, sockerr,
35 evutil_socket_error_to_string (sockerr));
36 return; /* Don't unlink packet. */
39 /* Unlink the packet. */
40 conn->out_queue = pkt->next;
42 /* If there are more packets in queue, add the write event again. */
43 if (pkt->conn->out_queue)
45 r = event_add (pkt->conn->wev, NULL);
48 rs_err_conn_push_fl (pkt->conn, RSE_EVENT, __FILE__, __LINE__,
49 "event_add: %s", evutil_gai_strerror (r));
55 /* Callback for conn->wev and conn->rev. FIXME: Rename. */
57 _evcb (evutil_socket_t fd, short what, void *user_data)
59 //rs_debug (("%s: fd=%d what=0x%x\n", __func__, fd, what));
60 if (what & EV_TIMEOUT)
62 struct rs_connection *conn = (struct rs_connection *) user_data;
64 conn->is_connecting = 0;
65 rs_debug (("%s: UDP timeout NYI", __func__));
67 else if (what & EV_READ)
69 struct rs_connection *conn = (struct rs_connection *) user_data;
71 /* read a single UDP packet and stick it in a new struct
74 /* TODO: Verify that reception of an unsolicited response packet
75 results in connection being closed. */
76 rs_debug (("%s: UDP read NYI", __func__));
78 /* TODO: delete retransmit timer */
80 else if (what & EV_WRITE)
82 struct rs_packet *pkt = (struct rs_packet *) user_data;
85 if (!pkt->conn->is_connected)
86 event_on_connect (pkt->conn, pkt);
88 if (pkt->conn->out_queue)
89 _send (pkt->conn, fd);
94 udp_init (struct rs_connection *conn, struct rs_packet *pkt)
98 conn->rev = event_new (conn->evb, conn->fd, EV_READ|EV_PERSIST, _evcb, conn);
99 conn->wev = event_new (conn->evb, conn->fd, EV_WRITE, _evcb, pkt);
100 if (!conn->rev || !conn->wev)
103 event_free (conn->rev);
104 /* ENOMEM _or_ EINVAL but EINVAL only if we use EV_SIGNAL, at
105 least for now (libevent-2.0.5). */
106 return rs_err_conn_push_fl (conn, RSE_NOMEM, __FILE__, __LINE__, NULL);