netread(3) - Linux man page

Name

netread - receive a message from a socket

Synopsis

#include "net.h"

int netread (int s, char *buf, int nbytes);

ssize_t netread_timeout (int s, void *buf, size_t nbytes, int timeout);

Description

netread receives a message from a socket. It overcomes the message fragmentation problem and always waits for all requested bytes to arrive or a timeout/error occurs.

Return Value

This routine returns the number of bytes if the operation was successful, 0 if the connection was closed by the remote end or -1 if the operation failed. In the latter case, serrno is set appropriately.

Errors

EINTR
The function was interrupted by a signal.
EBADF
s is not a valid descriptor.
EAGAIN
The socket is non-blocking and there is no message available.
EFAULT
buf is not a valid pointer.
EINVAL
nbytes is negative or zero.
ENOTSOCK
s is not a socket.
SECONNDROP
Connection closed by remote end.
SETIMEDOUT
Timed out.

See Also

recv(2), neterror(3)

Author

LCG Grid Deployment Team