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GETPEERNAME(2) | System Calls Manual | GETPEERNAME(2) |
NAME¶
getpeername
—
get name of connected peer
LIBRARY¶
Standard C Library (libc, -lc)SYNOPSIS¶
#include
<sys/types.h>
#include
<sys/socket.h>
int
getpeername
(int
s, struct
sockaddr * restrict name,
socklen_t * restrict
namelen);
DESCRIPTION¶
Thegetpeername
() system call returns the
name of the peer connected to socket s. The
namelen argument should be initialized to
indicate the amount of space pointed to by
name. On return it contains the actual size
of the name returned (in bytes). The name is truncated if the buffer provided
is too small.
RETURN VALUES¶
Thegetpeername
() function returns the
value 0 if successful; otherwise the value -1 is returned and
the global variable errno is set to indicate
the error.
ERRORS¶
The call succeeds unless:- [
EBADF
] - The argument s is not a valid descriptor.
- [
ECONNRESET
] - The connection has been reset by the peer.
- [
EINVAL
] - The value of the namelen argument is not valid.
- [
ENOTSOCK
] - The argument s is a file, not a socket.
- [
ENOTCONN
] - The socket is not connected.
- [
ENOBUFS
] - Insufficient resources were available in the system to perform the operation.
- [
EFAULT
] - The name argument points to memory not in a valid part of the process address space.
SEE ALSO¶
accept(2), bind(2), getsockname(2), socket(2)HISTORY¶
Thegetpeername
() system call appeared in
4.2BSD.June 4, 1993 | Debian |