extern void *ctxClientValueGet(struct AFB_clientCtx *clientCtx, int index);
extern void ctxClientValueSet(struct AFB_clientCtx *clientCtx, int index, void *value, void (*free_value)(void*));
extern void *ctxClientValueGet(struct AFB_clientCtx *clientCtx, int index);
extern void ctxClientValueSet(struct AFB_clientCtx *clientCtx, int index, void *value, void (*free_value)(void*));