/* Add a TCP relay tied to a connection. * * return 0 on success. * return -1 on failure. */ int add_tcp_relay_connection(TCP_Connections *tcp_c, int connections_number, IP_Port ip_port, const uint8_t *relay_pk) { TCP_Connection_to *con_to = get_connection(tcp_c, connections_number); if (!con_to) return -1; int tcp_connections_number = find_tcp_connection_relay(tcp_c, relay_pk); if (tcp_connections_number != -1) { return add_tcp_number_relay_connection(tcp_c, connections_number, tcp_connections_number); } else { int tcp_connections_number = add_tcp_relay(tcp_c, ip_port, relay_pk); if (add_tcp_connection_to_conn(con_to, tcp_connections_number) == -1) { return -1; } TCP_con *tcp_con = get_tcp_connection(tcp_c, tcp_connections_number); if (!tcp_con) return -1; ++tcp_con->lock_count; return 0; } }
/* Add a TCP relay tied to a connection. * * This should be called with the same relay by two peers who want to create a TCP connection with each other. * * return 0 on success. * return -1 on failure. */ int add_tcp_relay_connection(TCP_Connections *tcp_c, int connections_number, IP_Port ip_port, const uint8_t *relay_pk) { TCP_Connection_to *con_to = get_connection(tcp_c, connections_number); if (!con_to) { return -1; } int tcp_connections_number = find_tcp_connection_relay(tcp_c, relay_pk); if (tcp_connections_number != -1) { return add_tcp_number_relay_connection(tcp_c, connections_number, tcp_connections_number); } if (online_tcp_connection_from_conn(con_to) >= RECOMMENDED_FRIEND_TCP_CONNECTIONS) { return -1; } tcp_connections_number = add_tcp_relay_instance(tcp_c, ip_port, relay_pk); TCP_con *tcp_con = get_tcp_connection(tcp_c, tcp_connections_number); if (!tcp_con) { return -1; } if (add_tcp_connection_to_conn(con_to, tcp_connections_number) == -1) { return -1; } return 0; }