int destiny_socket_accept(int s, sockaddr6_t *addr, uint32_t *addrlen)
{
socket_internal_t *server_socket = get_socket(s);
if (is_tcp_socket(s) && (server_socket->socket_values.tcp_control.state == LISTEN)) {
socket_internal_t *current_queued_socket =
get_waiting_connection_socket(s, NULL, NULL);
if (current_queued_socket != NULL) {
return handle_new_tcp_connection(current_queued_socket,
server_socket, thread_getpid());
}
else {
/* No waiting connections, waiting for message from TCP Layer */
msg_t msg_recv_client_syn;
msg_recv_client_syn.type = UNDEFINED;
while (msg_recv_client_syn.type != TCP_SYN) {
msg_receive(&msg_recv_client_syn);
}
current_queued_socket = get_waiting_connection_socket(s, NULL, NULL);
return handle_new_tcp_connection(current_queued_socket,
server_socket, thread_getpid());
}
}
else {
return -1;
}
}
void handle_tcp_ack_packet(ipv6_hdr_t *ipv6_header, tcp_hdr_t *tcp_header,
socket_internal_t *tcp_socket)
{
msg_t m_recv_tcp, m_send_tcp;
uint8_t target_pid;
if (tcp_socket->socket_values.tcp_control.state == TCP_LAST_ACK) {
target_pid = tcp_socket->recv_pid;
close_socket(tcp_socket);
msg_send(&m_send_tcp, target_pid, 0);
return;
}
else if (tcp_socket->socket_values.tcp_control.state == TCP_CLOSING) {
msg_send(&m_send_tcp, tcp_socket->recv_pid, 0);
msg_send(&m_send_tcp, tcp_socket->send_pid, 0);
return;
}
else if (get_waiting_connection_socket(tcp_socket->socket_id, ipv6_header,
tcp_header) != NULL) {
m_send_tcp.content.ptr = (char *)tcp_header;
net_msg_send_recv(&m_send_tcp, &m_recv_tcp, tcp_socket->recv_pid, TCP_ACK);
return;
}
else if (tcp_socket->socket_values.tcp_control.state == TCP_ESTABLISHED) {
if (check_tcp_consistency(&tcp_socket->socket_values, tcp_header, 0) == PACKET_OK) {
m_send_tcp.content.ptr = (char *)tcp_header;
net_msg_send(&m_send_tcp, tcp_socket->send_pid, 0, TCP_ACK);
return;
}
}
printf("NO WAY OF HANDLING THIS ACK!\n");
}
