1 '\" te
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   6 .TH GETPEERNAME 3SOCKET "Mar 26, 1998"
   7 .SH NAME
   8 getpeername \- get name of connected peer
   9 .SH SYNOPSIS
  10 .LP
  11 .nf
  12 \fBcc\fR [ \fIflag\fR ... ] \fIfile\fR ... \fB-lsocket\fR \fB -lnsl \fR [ \fIlibrary\fR ... ]
  13 #include <sys/types.h>
  14 #include <sys/socket.h>
  15 
  16 \fBint\fR \fBgetpeername\fR(\fBint\fR \fIs\fR, \fBstruct sockaddr *\fR\fIname\fR, \fBsocklen_t *\fR\fInamelen\fR);
  17 .fi
  18 
  19 .SH DESCRIPTION
  20 .LP
  21 \fBgetpeername()\fR returns the name of the peer connected to socket \fIs\fR.
  22 The \fBint\fR pointed to by the \fInamelen\fR parameter should be initialized
  23 to indicate the amount of space pointed to by \fIname\fR. On return it contains
  24 the actual size of the name returned (in bytes), prior to any truncation. The
  25 name is truncated if the buffer provided is too small.
  26 .SH RETURN VALUES
  27 .LP
  28 If successful, \fBgetpeername()\fR returns  \fB0\fR; otherwise it returns
  29 \fB\(mi1\fR and sets \fBerrno\fR to indicate the error.
  30 .SH ERRORS
  31 .LP
  32 The call succeeds unless:
  33 .sp
  34 .ne 2
  35 .na
  36 \fB\fBEBADF\fR\fR
  37 .ad
  38 .RS 12n
  39 The argument \fIs\fR is not a valid descriptor.
  40 .RE
  41 
  42 .sp
  43 .ne 2
  44 .na
  45 \fB\fBENOMEM\fR\fR
  46 .ad
  47 .RS 12n
  48 There was insufficient user memory for the operation to complete.
  49 .RE
  50 
  51 .sp
  52 .ne 2
  53 .na
  54 \fB\fBENOSR\fR\fR
  55 .ad
  56 .RS 12n
  57 There were insufficient STREAMS resources available for the operation to
  58 complete.
  59 .RE
  60 
  61 .sp
  62 .ne 2
  63 .na
  64 \fB\fBENOTCONN\fR\fR
  65 .ad
  66 .RS 12n
  67 The socket is not connected.
  68 .RE
  69 
  70 .sp
  71 .ne 2
  72 .na
  73 \fB\fBENOTSOCK\fR\fR
  74 .ad
  75 .RS 12n
  76 The argument \fIs\fR is not a socket.
  77 .RE
  78 
  79 .SH ATTRIBUTES
  80 .LP
  81 See \fBattributes\fR(5) for descriptions of the following attributes:
  82 .sp
  83 
  84 .sp
  85 .TS
  86 box;
  87 c | c
  88 l | l .
  89 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  90 _
  91 MT-Level        Safe
  92 .TE
  93 
  94 .SH SEE ALSO
  95 .LP
  96 \fBaccept\fR(3SOCKET), \fBbind\fR(3SOCKET), \fBgetsockname\fR(3SOCKET),
  97 \fBsockaddr\fR(3SOCKET),
  98 \fBsocket\fR(3SOCKET), \fBattributes\fR(5), \fBsocket.h\fR(3HEAD)