void iohandler_write(struct IODescriptor *iofd, const char *line);
void iohandler_send(struct IODescriptor *iofd, const char *data, size_t datalen);
void iohandler_printf(struct IODescriptor *iofd, const char *text, ...);
void iohandler_close(struct IODescriptor *iofd);
void iohandler_update(struct IODescriptor *iofd);
void iohandler_write(struct IODescriptor *iofd, const char *line);
void iohandler_send(struct IODescriptor *iofd, const char *data, size_t datalen);
void iohandler_printf(struct IODescriptor *iofd, const char *text, ...);
void iohandler_close(struct IODescriptor *iofd);
void iohandler_update(struct IODescriptor *iofd);