/** \file send.h Sender-related defines and structures. */
+/**
+ * A little preprocessor fu helps to create the sender_subcommand enumeration
+ * below and the list of sender name strings without duplicating the commands.
+ */
#define SENDER_SUBCOMMANDS \
SENDER_SUBCOMMAND(add) /**< Add a target (udp only). */ \
SENDER_SUBCOMMAND(delete) /**< Delete a target (udp only). */ \
SENDER_SUBCOMMAND(on) /**< Activate the sender. */ \
SENDER_SUBCOMMAND(off) /**< Deactivate the sender. */ \
+/** Concatenate "SENDER_" and the given arg and append a comma. */
#define SENDER_SUBCOMMAND(_name) SENDER_ ## _name,
+
+/**
+ * Each sender subcommand gets an SENDER_xxx identifier. The identifier is
+ * passed from the sender command handler to the server process via shared
+ * memory.
+ */
enum sender_subcommand {
- SENDER_SUBCOMMANDS
+ SENDER_SUBCOMMANDS /**< List of SENDER_xxx identifiers. */
NUM_SENDER_CMDS /**< Used as array size in struct \ref sender. */
};
+
#undef SENDER_SUBCOMMAND
+
+/**
+ * Redefine it to expand to the stringified name of the sender so that
+ * SENDER_SUBCOMMANDS above now expands to the comma-separated list of sender
+ * name strings. This is used in command.c to define and initialize an array of
+ * char pointers.
+ */
#define SENDER_SUBCOMMAND(_name) #_name,
/**
void (*send)(long unsigned current_chunk, long unsigned chunks_sent,
const char *buf, size_t len, const char *header_buf,
size_t header_len);
- /**
- * Add file descriptors to fd_sets.
- *
- * The pre_select function of each supported sender is called just before
- * para_server enters its main select loop. Each sender may add its own
- * file descriptors to the \a rfds or the \a wfds set.
- *
- * If a file descriptor was added, \a max_fileno must be increased by
- * this function, if necessary.
- *
- * \sa select(2).
- */
- void (*pre_select)(int *max_fileno, fd_set *rfds, fd_set *wfds);
- /**
- * Handle the file descriptors which are ready for I/O.
- *
- * If the pre_select hook added one ore more file descriptors to the
- * read or write set, this is the hook to check the result and do any
- * I/O on those descriptors which are ready for reading/writing.
- */
- void (*post_select)(fd_set *rfds, fd_set *wfds);
+ /** Ask the scheduler to monitor file descriptors. */
+ void (*pre_monitor)(struct sched *s);
+ /** Perform I/O on the file descriptors which are ready. */
+ void (*post_monitor)(struct sched *s);
/**
* Terminate all connected clients.
*
/** Describes the current status of one paraslash sender. */
struct sender_status {
- /** The file descriptor of the socket this sender is listening on. */
- int listen_fd;
- /** The TCP/DCCP port used by this sender. */
- int port;
+ /** 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. */
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, int port,
- int max_clients, int default_deny);
+ 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_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);
+struct sender_client *accept_sender_client(struct sender_status *ss);
int send_queued_chunks(int fd, struct chunk_queue *cq);
int parse_fec_url(const char *arg, struct sender_command_data *scd);