A version of LWIP, provided for backwards compatibility.
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api_lib.c File Reference
Sequential API External module. More...
Go to the source code of this file.
Functions | |
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. | |
err_t | netconn_delete (struct netconn *conn) |
Close a netconn 'connection' and free its resources. | |
enum netconn_type | netconn_type (struct netconn *conn) |
Get the type of a netconn (as enum netconn_type). | |
err_t | netconn_getaddr (struct netconn *conn, struct ip_addr *addr, u16_t *port, u8_t local) |
Get the local or remote IP address and port of a netconn. | |
err_t | netconn_bind (struct netconn *conn, struct ip_addr *addr, u16_t port) |
Bind a netconn to a specific local IP address and port. | |
err_t | netconn_connect (struct netconn *conn, struct ip_addr *addr, u16_t port) |
Connect a netconn to a specific remote IP address and port. | |
err_t | netconn_disconnect (struct netconn *conn) |
Disconnect a netconn from its current peer (only valid for UDP netconns). | |
err_t | netconn_listen_with_backlog (struct netconn *conn, u8_t backlog) |
Set a TCP netconn into listen mode. | |
struct netconn * | netconn_accept (struct netconn *conn) |
Accept a new connection on a TCP listening netconn. | |
struct netbuf * | netconn_recv (struct netconn *conn) |
Receive data (in form of a netbuf containing a packet buffer) from a netconn. | |
err_t | netconn_sendto (struct netconn *conn, struct netbuf *buf, struct ip_addr *addr, u16_t port) |
Send data (in form of a netbuf) to a specific remote IP address and port. | |
err_t | netconn_send (struct netconn *conn, struct netbuf *buf) |
Send data over a UDP or RAW netconn (that is already connected). | |
err_t | netconn_write (struct netconn *conn, const void *dataptr, int size, u8_t apiflags) |
Send data over a TCP netconn. | |
err_t | netconn_close (struct netconn *conn) |
Close a TCP netconn (doesn't delete it). | |
err_t | netconn_join_leave_group (struct netconn *conn, struct ip_addr *multiaddr, struct ip_addr *interface, enum netconn_igmp join_or_leave) |
Join multicast groups for UDP netconns. | |
err_t | netconn_gethostbyname (const char *name, struct ip_addr *addr) |
Execute a DNS query, only one IP address is returned. |
Detailed Description
Sequential API External module.
Definition in file 7/Core/lwIP/api/api_lib.c.
Function Documentation
Accept a new connection on a TCP listening netconn.
- Parameters:
-
conn the TCP listen netconn
- Returns:
- the newly accepted netconn or NULL on timeout
Definition at line 267 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_bind | ( | struct netconn * | conn, |
struct ip_addr * | addr, | ||
u16_t | port | ||
) |
Bind a netconn to a specific local IP address and port.
Binding one netconn twice might not always be checked correctly!
- Parameters:
-
conn the netconn to bind addr the local IP address to bind the netconn to (use IP_ADDR_ANY to bind to all addresses) port the local port to bind the netconn to (not used for RAW)
- Returns:
- ERR_OK if bound, any other err_t on failure
Definition at line 176 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_close | ( | struct netconn * | conn ) |
Close a TCP netconn (doesn't delete it).
- Parameters:
-
conn the TCP netconn to close
- Returns:
- ERR_OK if the netconn was closed, any other err_t on error
Definition at line 488 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_connect | ( | struct netconn * | conn, |
struct ip_addr * | addr, | ||
u16_t | port | ||
) |
Connect a netconn to a specific remote IP address and port.
- Parameters:
-
conn the netconn to connect addr the remote IP address to connect to port the remote port to connect to (no used for RAW)
- Returns:
- ERR_OK if connected, return value of tcp_/udp_/raw_connect otherwise
Definition at line 199 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_delete | ( | struct netconn * | conn ) |
Close a netconn 'connection' and free its resources.
UDP and RAW connection are completely closed, TCP pcbs might still be in a waitstate after this returns.
- Parameters:
-
conn the netconn to delete
- Returns:
- ERR_OK if the connection was deleted
Definition at line 103 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_disconnect | ( | struct netconn * | conn ) |
Disconnect a netconn from its current peer (only valid for UDP netconns).
- Parameters:
-
conn the netconn to disconnect
- Returns:
- TODO: return value is not set here...
Definition at line 221 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_getaddr | ( | struct netconn * | conn, |
struct ip_addr * | 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
Definition at line 147 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_gethostbyname | ( | const char * | name, |
struct ip_addr * | addr | ||
) |
Execute a DNS query, only one IP address is returned.
- Parameters:
-
name a string representation of the DNS host name to query addr a preallocated struct ip_addr where to store the resolved IP address
- Returns:
- ERR_OK: resolving succeeded ERR_MEM: memory error, try again later ERR_ARG: dns client not initialized or invalid hostname ERR_VAL: dns server response was invalid
Definition at line 543 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_join_leave_group | ( | struct netconn * | conn, |
struct ip_addr * | multiaddr, | ||
struct ip_addr * | interface, | ||
enum netconn_igmp | join_or_leave | ||
) |
Join multicast groups for UDP netconns.
- Parameters:
-
conn the UDP netconn for which to change multicast addresses multiaddr IP address of the multicast group to join or leave interface the IP address of the network interface on which to send the igmp message join_or_leave flag whether to send a join- or leave-message
- Returns:
- ERR_OK if the action was taken, any err_t on error
Definition at line 512 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_listen_with_backlog | ( | struct netconn * | conn, |
u8_t | backlog | ||
) |
Set a TCP netconn into listen mode.
- Parameters:
-
conn the tcp netconn to set to listen mode backlog the listen backlog, only used if TCP_LISTEN_BACKLOG==1
- Returns:
- ERR_OK if the netconn was set to listen (UDP and RAW netconns don't return any error (yet?))
Definition at line 242 of file 7/Core/lwIP/api/api_lib.c.
struct netconn* netconn_new_with_proto_and_callback | ( | enum netconn_type | t, |
u8_t | proto, | ||
netconn_callback | callback | ||
) | [read] |
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
Definition at line 68 of file 7/Core/lwIP/api/api_lib.c.
struct netbuf* netconn_recv | ( | struct netconn * | conn ) | [read] |
Receive data (in form of a netbuf containing a packet buffer) from a netconn.
- Parameters:
-
conn the netconn from which to receive data
- Returns:
- a new netbuf containing received data or NULL on memory error or timeout
Definition at line 306 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_send | ( | struct netconn * | conn, |
struct netbuf * | buf | ||
) |
Send data over a UDP or RAW netconn (that is already connected).
- Parameters:
-
conn the UDP or RAW netconn over which to send data buf a netbuf containing the data to send
- Returns:
- ERR_OK if data was sent, any other err_t on error
Definition at line 436 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_sendto | ( | struct netconn * | conn, |
struct netbuf * | buf, | ||
struct ip_addr * | addr, | ||
u16_t | port | ||
) |
Send data (in form of a netbuf) to a specific remote IP address and port.
Only to be used for UDP and RAW netconns (not TCP).
- Parameters:
-
conn the netconn over which to send data buf a netbuf containing the data to send addr the remote IP address to which to send the data port the remote port to which to send the data
- Returns:
- ERR_OK if data was sent, any other err_t on error
Definition at line 418 of file 7/Core/lwIP/api/api_lib.c.
enum netconn_type netconn_type | ( | struct netconn * | conn ) |
Get the type of a netconn (as enum netconn_type).
- Parameters:
-
conn the netconn of which to get the type
- Returns:
- the netconn_type of conn
Definition at line 129 of file 7/Core/lwIP/api/api_lib.c.
err_t netconn_write | ( | struct netconn * | conn, |
const void * | dataptr, | ||
int | size, | ||
u8_t | apiflags | ||
) |
Send data over a TCP netconn.
- Parameters:
-
conn the TCP netconn over which to send data dataptr pointer to the application buffer that contains the data to send size size of the application data to send apiflags combination of following flags : - NETCONN_COPY (0x01) data will be copied into memory belonging to the stack
- NETCONN_MORE (0x02) for TCP connection, PSH flag will be set on last segment sent
- Returns:
- ERR_OK if data was sent, any other err_t on error
Definition at line 462 of file 7/Core/lwIP/api/api_lib.c.
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