NAME

       lc_recvtree, lc_recvchunk - receive data over multicast

LIBRARY

       Librecast library (liblibrecast, -llibrecast)

SYNOPSIS

       #include <librecast/sync.h>

       ssize_t lc_recvtree(lc_ctx_t *lctx, unsigned char *hash, mtree_t *tree
                           lc_stat_t *stats, lc_sync_options_t *opt, int flags);
       ssize_t lc_recvchunk(lc_ctx_t *lctx, unsigned char *hash, void *data, const size_t len
                           lc_stat_t *stats, lc_sync_options_t *opt, int flags);

       Compile and link with -llibrecast.

DESCRIPTION

       Each  of  these  functions  receives  data over multicast by joining the librecast channel
       formed from the supplied hash.

       The lc_recvtree function receives the merkle tree structure from channel hash into tree.

       The lc_recvchunk function receives a chunk of data of length len (which can be  fragmented
       over several packets) from channel hash, writing it into the memory pointed to by 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.

       flags is not used, at present, and must be zero for compatibility with future versions.

RETURN VALUE

       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.

ERRORS

       EINVAL Invalid argument.

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

SEE ALSO

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