接続している相手のアドレスを取得
~
''int PASCAL FAR getpeername(''
''SOCKET'' s'',''
''struct sockaddr FAR *'' name'',''
''int FAR *'' namelen
'');''
----
s
- A descriptor identifying a connected socket. 

name
- The structure which is to receive the name of the peer. 

namelen
- A pointer to the size of the name structure.

*返り値 [#ja2c670f]
成功時は 0 を返しエラーの場合は SOCKET_ERROR を返す
*エラー [#r9c34446]
WSAENOTINITIALISED
-A successful WSAStartup() must occur before using this API. 

WSAENETDOWN
-The Windows Sockets implementation has detected that the network subsystem has failed. 

WSAEFAULT
-The namelen argument is not large enough. 

WSAEINPROGRESS
-A blocking Windows Sockets call is in progress. 

WSAENOTCONN
-The socket is not connected. 

WSAENOTSOCK
-The descriptor is not a socket.