asio的事件投递主要由aico完成，除了accept只需要一次投递，永久有效外，其他事件投递都是一次性的，每次投递后，回调处理完，根据返回的状态，来判断是否需要继续投递。

/*! init the aico
 *
 * @param aicp      the aicp
 *
 * @return          the aico
 */
tb_aico_ref_t       tb_aico_init(tb_aicp_ref_t aicp);
 
/*! open the sock aico
 *
 * @param aicp      the aicp
 * @param sock      the socket
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_open_sock(tb_aico_ref_t aico, tb_socket_ref_t sock);
 
/*! open the sock aico from the socket type
 *
 * @param aicp      the aicp
 * @param type      the socket type
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_open_sock_from_type(tb_aico_ref_t aico, tb_size_t type);
 
/*! open the file aico
 *
 * @param aicp      the aicp
 * @param file      the file 
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_open_file(tb_aico_ref_t aico, tb_file_ref_t file);
 
/*! open the file aico from path
 *
 * @param aicp      the aicp
 * @param path      the file path
 * @param mode      the file mode
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_open_file_from_path(tb_aico_ref_t aico, tb_char_t const* path, tb_size_t mode);
 
/*! open the task aico 
 *
 * @param aicp      the aicp
 * @param ltimer    is the lower precision timer? 
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_open_task(tb_aico_ref_t aico, tb_bool_t ltimer);
 
/*! kill the aico
 *
 * @param aico      the aico
 */
tb_void_t           tb_aico_kill(tb_aico_ref_t aico);
 
/*! exit the aico
 *
 * @param aico      the aico
 */
tb_void_t           tb_aico_exit(tb_aico_ref_t aico);
 
/*! the aico aicp
 *
 * @param aico      the aico
 *
 * @return          the aico aicp
 */
tb_aicp_ref_t       tb_aico_aicp(tb_aico_ref_t aico);
 
/*! the aico type
 *
 * @param aico      the aico
 *
 * @return          the aico type
 */
tb_size_t           tb_aico_type(tb_aico_ref_t aico);
 
/*! get the socket if the aico is socket type
 *
 * @param aico      the aico
 *
 * @return          the socket
 */
tb_socket_ref_t     tb_aico_sock(tb_aico_ref_t aico);
 
/*! get the file if the aico is file type
 *
 * @param aico      the aico
 *
 * @return          the file
 */
tb_file_ref_t       tb_aico_file(tb_aico_ref_t aico);
 
/*! try to close it
 *
 * @param aico      the aico
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_clos_try(tb_aico_ref_t aico);
 
/*! the aico timeout
 *
 * @param aico      the aico
 * @param type      the timeout type
 *
 * @return          the timeout
 */
tb_long_t           tb_aico_timeout(tb_aico_ref_t aico, tb_size_t type);
 
/*! set the aico timeout
 *
 * @param aico      the aico
 * @param type      the timeout type
 * @param timeout   the timeout
 */
tb_void_t           tb_aico_timeout_set(tb_aico_ref_t aico, tb_size_t type, tb_long_t timeout);
 
/*! post the clos
 *
 * @param aicp      the aicp
 * @param func      the func
 * @param priv      the func private data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_clos(tb_aico_ref_t aico, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the acpt
 *
 * @param aico      the aico
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_acpt(tb_aico_ref_t aico, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the conn
 *
 * @param aico      the aico
 * @param addr      the addr
 * @param port      the port
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_conn(tb_aico_ref_t aico, tb_ipv4_t const* addr, tb_uint16_t port, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the recv for sock
 *
 * @param aico      the aico
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_recv(tb_aico_ref_t aico, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the send for sock
 *
 * @param aico      the aico
 * @param data      the data
 * @param size      the size, send the left file data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_send(tb_aico_ref_t aico, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the urecv for sock
 *
 * @param aico      the aico
 * @param addr      the addr
 * @param port      the port
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_urecv(tb_aico_ref_t aico, tb_ipv4_t const* addr, tb_uint16_t port, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the usend for sock
 *
 * @param aico      the aico
 * @param addr      the addr
 * @param port      the port
 * @param data      the data
 * @param size      the size, send the left file data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_usend(tb_aico_ref_t aico, tb_ipv4_t const* addr, tb_uint16_t port, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the recvv for sock
 *
 * @param aico      the aico
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_recvv(tb_aico_ref_t aico, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the sendv for sock
 *
 * @param aico      the aico
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_sendv(tb_aico_ref_t aico, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the urecvv for sock
 *
 * @param aico      the aico
 * @param addr      the addr
 * @param port      the port
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_urecvv(tb_aico_ref_t aico, tb_ipv4_t const* addr, tb_uint16_t port, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the usendv for sock
 *
 * @param aico      the aico
 * @param addr      the addr
 * @param port      the port
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_usendv(tb_aico_ref_t aico, tb_ipv4_t const* addr, tb_uint16_t port, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the sendfile for sock
 *
 * @param aico      the aico
 * @param file      the file handle
 * @param seek      the seek
 * @param size      the size, send the left data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_sendf(tb_aico_ref_t aico, tb_file_ref_t file, tb_hize_t seek, tb_hize_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the read for file
 *
 * @param aico      the aico
 * @param seek      the seek
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_read(tb_aico_ref_t aico, tb_hize_t seek, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the writ for file
 *
 * @param aico      the aico
 * @param seek      the seek
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_writ(tb_aico_ref_t aico, tb_hize_t seek, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the readv for file
 *
 * @param aico      the aico
 * @param seek      the seek
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_readv(tb_aico_ref_t aico, tb_hize_t seek, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the writv for file
 *
 * @param aico      the aico
 * @param seek      the seek
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_writv(tb_aico_ref_t aico, tb_hize_t seek, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the fsync for file
 *
 * @param aico      the aico
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_fsync(tb_aico_ref_t aico, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the clos after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_clos_after(tb_aico_ref_t aico, tb_size_t delay, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the acpt after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_acpt_after(tb_aico_ref_t aico, tb_size_t delay, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the conn after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param addr      the addr
 * @param port      the port
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_conn_after(tb_aico_ref_t aico, tb_size_t delay, tb_ipv4_t const* addr, tb_uint16_t port, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the recv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_recv_after(tb_aico_ref_t aico, tb_size_t delay, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the send for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param data      the data
 * @param size      the size, send the left file data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_send_after(tb_aico_ref_t aico, tb_size_t delay, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the urecv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param addr      the addr
 * @param port      the port
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_urecv_after(tb_aico_ref_t aico, tb_size_t delay, tb_ipv4_t const* addr, tb_uint16_t port, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the usend for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param addr      the addr
 * @param port      the port
 * @param data      the data
 * @param size      the size, send the left file data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_usend_after(tb_aico_ref_t aico, tb_size_t delay, tb_ipv4_t const* addr, tb_uint16_t port, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the recvv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_recvv_after(tb_aico_ref_t aico, tb_size_t delay, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the sendv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_sendv_after(tb_aico_ref_t aico, tb_size_t delay, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the urecvv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param addr      the addr
 * @param port      the port
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_urecvv_after(tb_aico_ref_t aico, tb_size_t delay, tb_ipv4_t const* addr, tb_uint16_t port, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the usendv for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param addr      the addr
 * @param port      the port
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_usendv_after(tb_aico_ref_t aico, tb_size_t delay, tb_ipv4_t const* addr, tb_uint16_t port, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the sendfile for sock after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param file      the file handle
 * @param seek      the seek
 * @param size      the size, send the left data if size == 0
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_sendf_after(tb_aico_ref_t aico, tb_size_t delay, tb_file_ref_t file, tb_hize_t seek, tb_hize_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the read for file after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param seek      the seek
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_read_after(tb_aico_ref_t aico, tb_size_t delay, tb_hize_t seek, tb_byte_t* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the writ for file after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param seek      the seek
 * @param data      the data
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_writ_after(tb_aico_ref_t aico, tb_size_t delay, tb_hize_t seek, tb_byte_t const* data, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the readv for file after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param seek      the seek
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_readv_after(tb_aico_ref_t aico, tb_size_t delay, tb_hize_t seek, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the writv for file after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param seek      the seek
 * @param list      the list
 * @param size      the size
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_writv_after(tb_aico_ref_t aico, tb_size_t delay, tb_hize_t seek, tb_iovec_t const* list, tb_size_t size, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! post the fsync for file after the delay time
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_fsync_after(tb_aico_ref_t aico, tb_size_t delay, tb_aico_func_t func, tb_cpointer_t priv);
 
/*! run aico task after timeout and will be auto-remove it after be expired
 *
 * only once, need continue to call it again if want to repeat task
 *
 * @param aico      the aico
 * @param delay     the delay time, ms
 * @param func      the callback func
 * @param priv      the callback data
 *
 * @return          tb_true or tb_false
 */
tb_bool_t           tb_aico_task_run(tb_aico_ref_t aico, tb_size_t delay, tb_aico_func_t func, tb_cpointer_t priv);