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Holger Freyther holger at freyther.de
> On 07 Oct 2015, at 16:18, Neels Hofmeyr <nhofmeyr at sysmocom.de> wrote:
>
>
> +/* TODO move to osmocom/core/socket.c ? */
where did you take this from?
> +/* TODO move to osmocom/core/socket.c ? */
> +int osmo_sockaddr_init(struct sockaddr_storage *addr, socklen_t *addr_len,
> + uint16_t family, uint16_t type, uint8_t proto,
> + const char *host, uint16_t port)
> +{
ah yeah. the by hostname is a good idea. But this should only be used at the
beginning of an application as we don't want to block on a DNS query.
>
> +static struct log_info_cat gtphub_categories[] = {
> +static const struct log_info gtphub_log_info = {
> + .filter_fn = gtphub_log_filter_fn,
> + .cat = gtphub_categories,
> + .num_cat = ARRAY_SIZE(gtphub_categories),
> +};
nothing else will be used as debug log? Depending on the answer it might be
better to just always initialize the GTPHUB area..
>
> +int gtp_relay(struct osmo_fd *from, struct sockaddr_storage *from_addr, socklen_t *from_addr_len,
> + struct osmo_fd *to, struct sockaddr_storage *to_addr, socklen_t to_addr_len)
> +{
> + static uint8_t buf[4096];
> +
> + errno = 0;
> + ssize_t received = recvfrom(from->fd, buf, sizeof(buf), 0,
> + (struct sockaddr*)from_addr, from_addr_len);
> +
When the first gbproxy was built our buffer was smaller and we truncated messages. Now 4k
is pretty big and bigger than our expectation for a UDP message. If you use recvmsg then the
msg_flags will have MSG_TRUNC set or not. Not sure if you want to use it.
> + rc = osmo_sock_init_ofd(&clients_ofd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, clients_addr_str, clients_port, OSMO_SOCK_F_BIND);
> + rc = osmo_sock_init_ofd(&server_ofd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, server_rx_addr_str, server_rx_port, OSMO_SOCK_F_BIND);
Who is the server? who is the client? Maybe give it names to what we expect on the side?
One is the SGSN, the other is the GGSN?