LWIP-API 函数.docVIP

TCP Raw API functions API function Description TCP connection setup tcp_new Creates a new TCP PCB (protocol control block). 创建TCP PCB（协议控制块） tcp_bind Binds a TCP PCB to a local IP address and port. 绑定TCP PCB到本地IP和端口 tcp_listen Starts the listening process on the TCP PCB. 开始监听 tcp_accept Assigns a callback function that will be called when a new TCP connection arrives. 设置回调函数，在接收到新的TCP链接时调用 tcp_accepted Informs the lwIP stack that an incoming TCP connection has been accepted. tcp_connect Used to connect to a remote TCP host. Sending TCP data tcp_write Queues up data to be sent. tcp_sent Assigns a callback function that will be called when sent data is acknowledged by the remote host. tcp_output Forces queued data to be sent. Receiving TCP data tcp_recv Sets the callback function that will be called when new data arrives tcp_recved Must be called when the application has processed the incoming data packet (for TCP window management). Application polling tcp_poll Assigns a callback functions that will be called periodically. It can be used by the application to check if there is remaining application data that needs to be sent or if there are connections that need to be closed. Closing and aborting connections tcp_close Closes a TCP connection with a remote host. tcp_err Assigns a callback function for handling connections aborted by the lwIP due to errors (such as memory shortage errors). tcp_abort Aborts a TCP connection. UDP Raw API functions API function Description udp_new Creates a new UDP PCB. udp_remove Removes and de-allocates a UDP PCB. udp_bind Binds a UDP PCB with a local IP address and port. udp_connect Sets up a UDP PCB remote IP address and port. udp_disconnect Removes a UDP PCB remote IP and port. udp_send Sends UDP data. udp_recv Specifies a callback function which is called when a datagram is received. Netconn API functions API function Description netconn_new Creates a new connection. netconn_delete Deletes an existing connection. netconn_bind B