lc_sendtree, lc_sendchunk - send data over multicast

       Each of these functions sends data over multicast on the librecast channel formed from the supplied hash.
       LCRQ  (RaptorQ)  encoding is used when sending. Trees, for which the length is not known by the receiver,
       include an OTI header (RaptorQ FEC Object Transmission Information header  -  see  RFC  6330)  with  each
       packet.

       Sending continues in a loop until the calling thread is cancelled.

       The lc_sendtree function sends the merkle tree structure tree on channel hash.  The lc_sendchunk function
       sends len bytes of data.

       If stats is not NULL, transfer statistics will be returned in this structure.

       opt is not used, at present, and must be NULL for compatibility with future versions.

       The flags argument is the bitwise OR of zero of more of the following flags:

       LC_SHARE_LOOPBACK
              Set the loopback option IPV6_MULTICAST_LOOP on the sending socket.

EINVAL Invalid argument.

       ENOMEM Not enough space/cannot allocate memory (POSIX.1-2001).

       Librecast library (liblibrecast, -llibrecast)

       lc_sendtree, lc_sendchunk - send data over multicast

       These  calls  return the number of bytes received, or -1 if an error occurred.  In the event of an error,
       errno is set to indicate the error.

lc_ctx_new(3),lc_share(3), lc_sendtree(3), lc_sendchunk(3)

LIBRECAST                                          2023-08-02                                         LC_SEND(3)

#include<librecast/sync.h>ssize_tlc_sendtree(lc_ctx_t*lctx,unsignedchar*hash,constmtree_t*tree,lc_stat_t*stats,lc_sync_options_t*opt,intflags);ssize_tlc_sendchunk(lc_ctx_t*lctx,unsignedchar*hash,constvoid*data,constsize_tlen,lc_stat_t*stats,lc_sync_options_t*opt,intflags);

       Compile and link with -llibrecast.