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getpeername (2)
  • getpeername (2) ( FreeBSD man: Системные вызовы )
  • getpeername (2) ( Русские man: Системные вызовы )
  • >> getpeername (2) ( Linux man: Системные вызовы )
  • getpeername (3) ( Solaris man: Библиотечные вызовы )
  • getpeername (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    getpeername - get name of connected peer socket
     
    

    SYNOPSIS

    #include <sys/socket.h>

    int getpeername(int s, struct sockaddr *name, socklen_t *namelen);  

    DESCRIPTION

    getpeername() 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 VALUE

    On success, zero is returned. On error, -1 is returned, and errno is set appropriately.  

    ERRORS

    EBADF
    The argument s is not a valid descriptor.
    EFAULT
    The name argument points to memory not in a valid part of the process address space.
    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.
     

    CONFORMING TO

    SVr4, 4.4BSD (the getpeername() function call first appeared in 4.2BSD), POSIX.1-2001.  

    NOTES

    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).  

    SEE ALSO

    accept(2), bind(2), getsockname(2), ip(7), unix(7)  

    COLOPHON

    This page is part of release 3.14 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    RETURN VALUE
    ERRORS
    CONFORMING TO
    NOTES
    SEE ALSO
    COLOPHON


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