lc_ctx_coding_set3
Set librecast channel encoding options
Part of lc_channel_coding_set(3).
Usage
#include <librecast/net.h>
int lc_ctx_coding_set(lc_ctx_t *ctx, int coding); int lc_channel_coding_set(lc_channel_t *chan, int coding);
Compile and link with -llibrecast.
Library
Librecast library (liblibrecast, -llibrecast)
Overview
lc_ctx_coding_set() sets the default encoding options for sockets and channels subsequently created using context ctx.
lc_channel_coding_set() sets encoding options for a Librecast channel, chan, overriding any defaults inherited from the parent Librecast context.
chan is a pointer to a Librecast channel.
The coding argument can include the bitwise OR of any of the following coding options:
LC_CODE_SYMM-
Enable symmetric key encryption. Requires that a symmetric key has been assigned to the Channel with lc_channel_set_sym_key(3)
LC_CODE_FEC_RQ-
Enables RaptorQ Forwards Error Correction (FEC). Calling lc_channel_send(3) as normal encodes the data to be sent. Subsequent calls to lc_channel_send() with buf == NULL will send the next symbol/packet. To receive, call lc_channel_coding_set (chan, LC_CODE_FEC_RQ) on the receiver and then lc_channel_recv(). Encodings are per channel, not per socket, so it is necessary to use lc_channel_recv(), not lc_socket_recv(3).
LC_CODE_FEC_RAND-
Requires
LC_CODE_FEC_RQ.Use random symbols instead of sequential ESIs.
Return value
Returns the current value of the channel coding options.
Errors
None.