GNU/Linux man pages
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GNU/Linux |
CentOS 5.2 |
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getpeername(2) |
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getpeername − get name of connected peer socket
#include <sys/socket.h>
int getpeername(int s, struct sockaddr *name, socklen_t *namelen);
getpeername() returns the name of the peer connected to socket s. The namelen parameter 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.
On success, zero is returned. On error, −1 is returned, and errno is set appropriately.
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EBADF |
The argument s is not a valid descriptor. | ||
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EFAULT |
The name parameter points to memory not in a valid part of the process address space. | ||
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EINVAL |
namelen is invalid (e.g., is negative). |
ENOBUFS
Insufficient resources were available in the system to perform the operation.
ENOTCONN
The socket is not connected.
ENOTSOCK
The argument s is a file, not a socket.
SVr4, 4.4BSD (the getpeername() function call first appeared in 4.2BSD), POSIX.1-2001.
The third argument of getpeername() is in reality an int * (and this is what 4.x BSD and libc4 and libc5 have). Some POSIX confusion resulted in the present socklen_t, also used by glibc. See also accept(2).
accept(2), bind(2), getsockname(2)
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getpeername(2) | |