how to use this TAP protocol?

static void tap_mutation_callback( libcouchbase_t instance, const void *cookie, const void *key, libcouchbase_size_t nkey, const void *
data, libcouchbase_size_t nbytes, libcouchbase_uint32_t flags, libcouchbase_time_t exp, libcouchbase_cas_t cas, libcouchbase_vbucket_t 
vbucket, const void *es, libcouchbase_size_t nes )
{
    (void)instance;
    (void)cookie;
    (void)flags;
    (void)cas;
    (void)vbucket;
    (void)exp;
    string akey;
    string adata;
    string aes;
    akey.append( (char*)key, nkey );
    adata.append( (char*)data, nbytes);
    aes.append( (char*)es, nes );
 
    printf("[CALLBACK] key : %s, data : %s, es : %s \n", akey.c_str(), adata.c_str(), aes.c_str() );
 
}
 int main()
 {
     libcouchbase_t instance = libcouchbase_create( "172.16.0.117", "hi", "hello", "default", NULL );
 
     libcouchbase_set_tap_mutation_callback( instance, tap_mutation_callback );
 
     libcouchbase_connect( instance );
     printf("CONNECTED\n");
 
     libcouchbase_tap_filter_t filter = libcouchbase_tap_filter_create();
 
     libcouchbase_tap_filter_set_keys_only( filter, 0 );
//   while( 1 )
//   {}
 
     libcouchbase_tap_filter_destroy( filter );
 
     return 0;
 }