+/** FEC parameters requested by FEC clients. */
+struct fec_client_parms {
+ /** Number of data slices plus redundant slices. */
+ uint8_t slices_per_group;
+ /** Number of slices minus number of redundant slices. */
+ uint8_t data_slices_per_group;
+ /** Whether the header must be sent periodically. */
+ bool need_periodic_header;
+ /**
+ * Transport-layer initialisation for FEC support.
+ *
+ * This optional function serves (a) to make the transport layer
+ * ready to send FEC slices and (b) to determine the Maximum
+ * Packet Size (MPS) supported by the connection. The MPS value
+ * determines the largest payload size. This value is used to
+ * send FEC slices that are not larger than the path MTU, to avoid
+ * fragmentation and to maximize packet utilization. The user can
+ * alternatively specify a slice size of up to this value.
+ */
+ int (*init_fec)(struct sender_client *sc);
+ /** Push out FEC-encoded packets */
+ void (*send_fec)(struct sender_client *sc, char *buf, size_t len);
+};
+
+/** Describes the current status of one paraslash sender. */
+struct sender_status {
+ /** Number of sockets to listen on, size of the two arrays below. */
+ unsigned num_listen_fds;
+ /** Derived from --http-listen-address and --dccp-listen-address. */
+ char **listen_addresses;
+ /** Default TCP/DCCP port number for addresses w/o port. */
+ int default_port;
+ /** The socket fd(s) this sender is listening on. */
+ int *listen_fds;
+ /** The current number of simultaneous connections. */
+ int num_clients;
+ /** The maximal number of simultaneous connections. */
+ int max_clients;
+ /** Whether the access control list is a whitelist. */
+ int default_deny;
+ /** The whitelist/blacklist. */
+ struct list_head acl;
+ /** The list of connected clients. */
+ struct list_head client_list;
+};
+
+/** Iterate over all listening addresses of the http/dccp sender. */
+#define FOR_EACH_LISTEN_FD(_n, _ss) for (_n = 0; _n < (_ss)->num_listen_fds; _n++)
+
+void shutdown_client(struct sender_client *sc, struct sender_status *ss);
+void shutdown_clients(struct sender_status *ss);
+void init_sender_status(struct sender_status *ss,
+ const struct lls_opt_result *acl_opt_result,
+ const struct lls_opt_result *listen_address_opt_result,
+ int default_port, int max_clients, int default_deny);
+void free_sender_status(const struct sender_status *ss);
+char *generic_sender_status(struct sender_status *ss, const char *name);
+void generic_com_allow(struct sender_command_data *scd,
+ struct sender_status *ss);
+void generic_com_deny(struct sender_command_data *scd,
+ struct sender_status *ss);
+void generic_com_on(struct sender_status *ss, unsigned protocol);
+void generic_acl_deplete(struct list_head *acl);
+void generic_com_off(struct sender_status *ss);
+char *generic_sender_help(void);
+struct sender_client *accept_sender_client(struct sender_status *ss, fd_set *rfds);
+int send_queued_chunks(int fd, struct chunk_queue *cq);
+int parse_fec_url(const char *arg, struct sender_command_data *scd);