void
check_server_poll_timeout_dowork (struct context *c)
{
event_timeout_reset (&c->c2.server_poll_interval);
if (!tls_initial_packet_received (c->c2.tls_multi))
{
msg (M_INFO, "Server poll timeout, restarting");
register_signal (c, SIGUSR1, "server_poll");
c->persist.restart_sleep_seconds = -1;
}
}
void
process_outgoing_link (struct context *c)
{
struct gc_arena gc = gc_new ();
int error_code = 0;
perf_push (PERF_PROC_OUT_LINK);
if (c->c2.to_link.len > 0 && c->c2.to_link.len <= EXPANDED_SIZE (&c->c2.frame))
{
/*
* Setup for call to send/sendto which will send
* packet to remote over the TCP/UDP port.
*/
int size = 0;
ASSERT (link_socket_actual_defined (c->c2.to_link_addr));
#ifdef ENABLE_DEBUG
/* In gremlin-test mode, we may choose to drop this packet */
if (!c->options.gremlin || ask_gremlin (c->options.gremlin))
#endif
{
/*
* Let the traffic shaper know how many bytes
* we wrote.
*/
#ifdef ENABLE_FEATURE_SHAPER
if (c->options.shaper)
shaper_wrote_bytes (&c->c2.shaper, BLEN (&c->c2.to_link)
+ datagram_overhead (c->options.ce.proto));
#endif
/*
* Let the pinger know that we sent a packet.
*/
if (c->options.ping_send_timeout)
event_timeout_reset (&c->c2.ping_send_interval);
#if PASSTOS_CAPABILITY
/* Set TOS */
link_socket_set_tos (c->c2.link_socket);
#endif
/* Log packet send */
#ifdef LOG_RW
if (c->c2.log_rw)
fprintf (stderr, "W");
#endif
msg (D_LINK_RW, "%s WRITE [%d] to %s: %s",
proto2ascii (c->c2.link_socket->info.proto, c->c2.link_socket->info.af, true),
BLEN (&c->c2.to_link),
print_link_socket_actual (c->c2.to_link_addr, &gc),
PROTO_DUMP (&c->c2.to_link, &gc));
/* Packet send complexified by possible Socks5 usage */
{
struct link_socket_actual *to_addr = c->c2.to_link_addr;
int size_delta = 0;
/* If Socks5 over UDP, prepend header */
socks_preprocess_outgoing_link (c, &to_addr, &size_delta);
/* Send packet */
size = link_socket_write (c->c2.link_socket,
&c->c2.to_link,
to_addr);
/* Undo effect of prepend */
link_socket_write_post_size_adjust (&size, size_delta, &c->c2.to_link);
}
if (size > 0)
{
c->c2.max_send_size_local = max_int (size, c->c2.max_send_size_local);
c->c2.link_write_bytes += size;
link_write_bytes_global += size;
#ifdef ENABLE_MEMSTATS
if (mmap_stats)
mmap_stats->link_write_bytes = link_write_bytes_global;
#endif
#ifdef ENABLE_MANAGEMENT
if (management)
{
management_bytes_out (management, size);
#ifdef MANAGEMENT_DEF_AUTH
management_bytes_server (management, &c->c2.link_read_bytes, &c->c2.link_write_bytes, &c->c2.mda_context);
#endif
}
#endif
}
}
/* Check return status */
error_code = openvpn_errno();
check_status (size, "write", c->c2.link_socket, NULL);
if (size > 0)
{
/* Did we write a different size packet than we intended? */
if (size != BLEN (&c->c2.to_link))
msg (D_LINK_ERRORS,
"TCP/UDP packet was truncated/expanded on write to %s (tried=%d,actual=%d)",
print_link_socket_actual (c->c2.to_link_addr, &gc),
BLEN (&c->c2.to_link),
size);
}
/* if not a ping/control message, indicate activity regarding --inactive parameter */
if (c->c2.buf.len > 0 )
register_activity (c, size);
#ifdef ENABLE_CRYPTO
/* for unreachable network and "connecting" state switch to the next host */
if (size < 0 && ENETUNREACH == error_code && c->c2.tls_multi &&
!tls_initial_packet_received (c->c2.tls_multi) && c->options.mode == MODE_POINT_TO_POINT)
{
msg (M_INFO, "Network unreachable, restarting");
register_signal (c, SIGUSR1, "network-unreachable");
}
#endif
}
else
{
if (c->c2.to_link.len > 0)
msg (D_LINK_ERRORS, "TCP/UDP packet too large on write to %s (tried=%d,max=%d)",
print_link_socket_actual (c->c2.to_link_addr, &gc),
c->c2.to_link.len,
EXPANDED_SIZE (&c->c2.frame));
}
buf_reset (&c->c2.to_link);
perf_pop ();
gc_free (&gc);
}