api_lib.c File Reference

#include "lwip/opt.h"
#include "lwip/api.h"
#include "lwip/memp.h"
#include "lwip/ip.h"
#include "lwip/raw.h"
#include "lwip/udp.h"
#include "lwip/priv/api_msg.h"
#include "lwip/priv/tcp_priv.h"
#include "lwip/priv/tcpip_priv.h"
#include "path/to/my/lwip_hooks.h"
#include <string.h>

Functions
struct netconn *	netconn_new_with_proto_and_callback (enum netconn_type t, u8_t proto, netconn_callback callback)
err_t	netconn_prepare_delete (struct netconn *conn)
err_t	netconn_delete (struct netconn *conn)
err_t	netconn_getaddr (struct netconn *conn, ip_addr_t *addr, u16_t *port, u8_t local)
err_t	netconn_bind (struct netconn *conn, const ip_addr_t *addr, u16_t port)
err_t	netconn_bind_if (struct netconn *conn, u8_t if_idx)
err_t	netconn_connect (struct netconn *conn, const ip_addr_t *addr, u16_t port)
err_t	netconn_disconnect (struct netconn *conn)
err_t	netconn_listen_with_backlog (struct netconn *conn, u8_t backlog)
err_t	netconn_accept (struct netconn *conn, struct netconn **new_conn)
err_t	netconn_recv_tcp_pbuf (struct netconn *conn, struct pbuf **new_buf)
err_t	netconn_recv_tcp_pbuf_flags (struct netconn *conn, struct pbuf **new_buf, u8_t apiflags)
err_t	netconn_recv_udp_raw_netbuf (struct netconn *conn, struct netbuf **new_buf)
err_t	netconn_recv_udp_raw_netbuf_flags (struct netconn *conn, struct netbuf **new_buf, u8_t apiflags)
err_t	netconn_recv (struct netconn *conn, struct netbuf **new_buf)
err_t	netconn_sendto (struct netconn *conn, struct netbuf *buf, const ip_addr_t *addr, u16_t port)
err_t	netconn_send (struct netconn *conn, struct netbuf *buf)
err_t	netconn_write_partly (struct netconn *conn, const void *dataptr, size_t size, u8_t apiflags, size_t *bytes_written)
err_t	netconn_write_vectors_partly (struct netconn *conn, struct netvector *vectors, u16_t vectorcnt, u8_t apiflags, size_t *bytes_written)
err_t	netconn_close (struct netconn *conn)
err_t	netconn_err (struct netconn *conn)
err_t	netconn_shutdown (struct netconn *conn, u8_t shut_rx, u8_t shut_tx)

Detailed Description

Sequential API External module

Function Documentation

netconn_getaddr()

err_t netconn_getaddr	(	struct netconn *	conn,
		ip_addr_t *	addr,
		u16_t *	port,
		u8_t	local )

Get the local or remote IP address and port of a netconn. For RAW netconns, this returns the protocol instead of a port!

Parameters

conn	the netconn to query
addr	a pointer to which to save the IP address
port	a pointer to which to save the port (or protocol for RAW)
local	1 to get the local IP address, 0 to get the remote one

Returns

ERR_CONN for invalid connections ERR_OK if the information was retrieved

netconn_new_with_proto_and_callback()

struct netconn * netconn_new_with_proto_and_callback	(	enum netconn_type	t,
		u8_t	proto,
		netconn_callback	callback )

Create a new netconn (of a specific type) that has a callback function. The corresponding pcb is also created.

Parameters

t	the type of 'connection' to create (

See also

enum netconn_type)

Parameters

proto	the IP protocol for RAW IP pcbs
callback	a function to call on status changes (RX available, TX'ed)

Returns

a newly allocated struct netconn or NULL on memory error

netconn_recv_udp_raw_netbuf()

err_t netconn_recv_udp_raw_netbuf	(	struct netconn *	conn,
		struct netbuf **	new_buf )

Receive data (in form of a netbuf) from a UDP or RAW netconn

Parameters

conn	the netconn from which to receive data
new_buf	pointer where a new netbuf is stored when received data

Returns

ERR_OK if data has been received, an error code otherwise (timeout, memory error or another error) ERR_ARG if conn is not a UDP/RAW netconn

netconn_recv_udp_raw_netbuf_flags()

err_t netconn_recv_udp_raw_netbuf_flags	(	struct netconn *	conn,
		struct netbuf **	new_buf,
		u8_t	apiflags )

Receive data (in form of a netbuf) from a UDP or RAW netconn

Parameters

conn	the netconn from which to receive data
new_buf	pointer where a new netbuf is stored when received data
apiflags	flags that control function behaviour. For now only: NETCONN_DONTBLOCK: only read data that is available now, don't wait for more data

Returns

ERR_OK if data has been received, an error code otherwise (timeout, memory error or another error) ERR_ARG if conn is not a UDP/RAW netconn

netconn_write_vectors_partly()

err_t netconn_write_vectors_partly	(	struct netconn *	conn,
		struct netvector *	vectors,
		u16_t	vectorcnt,
		u8_t	apiflags,
		size_t *	bytes_written )

Send vectorized data atomically over a TCP netconn.

Parameters

conn	the TCP netconn over which to send data
vectors	array of vectors containing data to send
vectorcnt	number of vectors in the array
apiflags	combination of following flags : NETCONN_COPY: data will be copied into memory belonging to the stack NETCONN_MORE: for TCP connection, PSH flag will be set on last segment sent NETCONN_DONTBLOCK: only write the data if all data can be written at once
bytes_written	pointer to a location that receives the number of written bytes

Returns

ERR_OK if data was sent, any other err_t on error