send

send

Sends a Message to a Connected Socket

Portability: UNIX compatible

SYNOPSIS
DESCRIPTION
RETURN VALUE
PORTABILITY
RELATED FUNCTIONS

SYNOPSIS

#include <sys/types.h>
#include <sys/socket.h>

int send(int s, const void *buf, int len, int flags);

DESCRIPTION

send transmits a message to socket descriptor s . The socket must be connected or associated with a foreign peer via the connect function. buf points to the buffer that contains the message. len is the number of bytes to be sent.

flags consists of the following:

MSG_OOB: requests that message buffers be sent as out-of-band data.
MSG_DONTROUTE: bypasses routing; uses the network portion of the destination address to select a network interface.

RETURN VALUE

If send succeeds, it returns the number of characters sent. If there is an error, it returns a -1 .

PORTABILITY

send is portable to other environments, including most UNIX systems, that implement BSD sockets.

RELATED FUNCTIONS

recv , recvfrom , recvmsg , sendmsg , sendto , write

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