Hi,
Let's try another API for statistics:
uint64_t stat[NN_STAT_NUM];
nn_getsockopt(sock, NN_SOL_SOCKET, NN_STATISTICS, &stat, sizeof(stat));
printf("stat: %d\n", stat[NN_STAT_MSGCOUNTER]);
Note: we have nn_symbol to iterate over symbols, that may be used to
enumerate NN_STAT_* constants.
To be able to find out a reason for asynchronous errors, we should
provide an option similar to SO_ERROR in posix:
int err;
nn_getsockopt(sock, NN_SOL_SOCKET, NN_ERROR, &err, sizeof(err));
Pros:
1. Keping nanomsg simpler
2. No need to agree on socket names, it's left up to the application
Cons:
1. More work to integrate in each app
2. Everybody will use it's own version
3. Statistics may be accessed from separate thread, so options should
be lock-free (shouldn't be a problem looking at the code).
(Note: first two cons may be addressed by reference implementation
outside of nanomsg itself)
Thoughts?
