struct tr_peer_socket tr_netOpenPeerSocket(tr_session* session, tr_address const* addr, tr_port port, bool clientIsSeed)
{
TR_ASSERT(tr_address_is_valid(addr));
struct tr_peer_socket ret = TR_PEER_SOCKET_INIT;
static int const domains[NUM_TR_AF_INET_TYPES] = { AF_INET, AF_INET6 };
tr_socket_t s;
struct sockaddr_storage sock;
socklen_t addrlen;
tr_address const* source_addr;
socklen_t sourcelen;
struct sockaddr_storage source_sock;
char err_buf[512];
if (!tr_address_is_valid_for_peers(addr, port))
{
return ret;
}
s = tr_fdSocketCreate(session, domains[addr->type], SOCK_STREAM);
if (s == TR_BAD_SOCKET)
{
return ret;
}
/* seeds don't need much of a read buffer... */
if (clientIsSeed)
{
int n = 8192;
if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, (void const*)&n, sizeof(n)) == -1)
{
tr_logAddInfo("Unable to set SO_RCVBUF on socket %" PRIdMAX ": %s", (intmax_t)s,
tr_net_strerror(err_buf, sizeof(err_buf), sockerrno));
}
}
if (evutil_make_socket_nonblocking(s) == -1)
{
tr_netClose(session, s);
return ret;
}
addrlen = setup_sockaddr(addr, port, &sock);
/* set source address */
source_addr = tr_sessionGetPublicAddress(session, addr->type, NULL);
TR_ASSERT(source_addr != NULL);
sourcelen = setup_sockaddr(source_addr, 0, &source_sock);
if (bind(s, (struct sockaddr*)&source_sock, sourcelen) == -1)
{
tr_logAddError(_("Couldn't set source address %s on %" PRIdMAX ": %s"), tr_address_to_string(source_addr), (intmax_t)s,
tr_net_strerror(err_buf, sizeof(err_buf), sockerrno));
tr_netClose(session, s);
return ret;
}
if (connect(s, (struct sockaddr*)&sock, addrlen) == -1 &&
#ifdef _WIN32
sockerrno != WSAEWOULDBLOCK &&
#endif
sockerrno != EINPROGRESS)
{
int const tmperrno = sockerrno;
if ((tmperrno != ENETUNREACH && tmperrno != EHOSTUNREACH) || addr->type == TR_AF_INET)
{
tr_logAddError(_("Couldn't connect socket %" PRIdMAX " to %s, port %d (errno %d - %s)"), (intmax_t)s,
tr_address_to_string(addr), (int)ntohs(port), tmperrno, tr_net_strerror(err_buf, sizeof(err_buf), tmperrno));
}
tr_netClose(session, s);
}
else
{
ret = tr_peer_socket_tcp_create(s);
}
tr_logAddDeep(__FILE__, __LINE__, NULL, "New OUTGOING connection %" PRIdMAX " (%s)", (intmax_t)s,
tr_peerIoAddrStr(addr, port));
return ret;
}
const char* tr_peerIoGetAddrStr( const tr_peerIo * io )
{
return tr_isPeerIo( io ) ? tr_peerIoAddrStr( &io->addr, io->port ) : "error";
}
