send / sendto TCP UDP

Copy bytes from an application memory buffer into a socket to send to a remote socket. See function NetSock_TxData() for more information.

Files

net_bsd.h/net_bsd.c

Prototypes

ssize_t  send (int      sock_id,
               void    *p_data,
              _size_t   data_len,
               int      flags);

ssize_t  sendto (         int         sock_id,
                          void       *p_data,
                         _size_t      data_len,
                          int         flags,
                 struct   sockaddr   *p_addr_remote,
                          socklen_t   addr_len);

Arguments

sock_id

Socket descriptor/handle identifier of socket to send data.

p_data

Pointer to application data to send.

data_len

Length of application data to send (in octets).

flags

Flags to select send options; bit-field flags logically OR'd:

0, No socket flags selected.

MSG_DONTWAIT, Send socket data without blocking.

p_addr_remote

Pointer to the destination address buffer; required for datagram sockets, optional for stream sockets.

addr_len

Length of destination address buffer (in octets).

Returned Value

The number of positive data octets sent if no error(s).

0, if socket connection closed.

-1, otherwise.