/**
* @ingroup altcp
* altcp_new_ip_type: called by applications to allocate a new pcb with the help of an
* allocator function.
*
* @param allocator allocator function and argument
* @param ip_type IP version of the pcb (@ref lwip_ip_addr_type)
* @return a new altcp_pcb or NULL on error
*/
struct altcp_pcb *
altcp_new_ip_type(altcp_allocator_t *allocator, u8_t ip_type)
{
struct altcp_pcb *conn;
if (allocator == NULL) {
/* no allocator given, create a simple TCP connection */
return altcp_tcp_new_ip_type(ip_type);
}
if (allocator->alloc == NULL) {
/* illegal allocator */
return NULL;
}
conn = allocator->alloc(allocator->arg, ip_type);
if (conn == NULL) {
/* allocation failed */
return NULL;
}
return conn;
}
static struct altcp_pcb*
smtp_setup_pcb(struct smtp_session *s, const ip_addr_t* remote_ip)
{
struct altcp_pcb* pcb;
LWIP_UNUSED_ARG(remote_ip);
#if LWIP_ALTCP && LWIP_ALTCP_TLS
if (smtp_server_tls_config) {
pcb = altcp_tls_new(smtp_server_tls_config, IP_GET_TYPE(remote_ip));
} else
#endif
{
pcb = altcp_tcp_new_ip_type(IP_GET_TYPE(remote_ip));
}
if (pcb != NULL) {
altcp_arg(pcb, s);
altcp_recv(pcb, smtp_tcp_recv);
altcp_err(pcb, smtp_tcp_err);
altcp_poll(pcb, smtp_tcp_poll, SMTP_POLL_INTERVAL);
altcp_sent(pcb, smtp_tcp_sent);
}
return pcb;
}
/** altcp_tcp allocator function fitting to @ref altcp_allocator_t / @ref altcp_new.
*
* arg pointer is not used for TCP.
*/
struct altcp_pcb *
altcp_tcp_alloc(void *arg, u8_t ip_type)
{
LWIP_UNUSED_ARG(arg);
return altcp_tcp_new_ip_type(ip_type);
}
