com.sun.jna.platform.win32.Winsock2 Maven / Gradle / Ivy
/* Copyright (c) 2017 Matthias Bläsing, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna.platform.win32;
import com.sun.jna.Library;
import com.sun.jna.Native;
import com.sun.jna.win32.W32APIOptions;
public interface Winsock2 extends Library {
Winsock2 INSTANCE = (Winsock2) Native.load("ws2_32", Winsock2.class, W32APIOptions.ASCII_OPTIONS);
/**
* The gethostname function retrieves the standard host name for the local
* computer.
*
*
* Remarks
*
*
* The gethostname function returns the name of the local host into the
* buffer specified by the name parameter. The host name is returned as a
* null-terminated string. The form of the host name is dependent on the
* Windows Sockets provider—it can be a simple host name, or it can be a
* fully qualified domain name. However, it is guaranteed that the name
* returned will be successfully parsed by gethostbyname and
* WSAAsyncGetHostByName.
*
*
* The maximum length of the name returned in the buffer pointed to by the
* name parameter is dependent on the namespace provider.
*
*
* If the gethostname function is used on a cluster resource on Windows
* Server 2008, Windows Server 2003, or Windows 2000 Server and the
* _CLUSTER_NETWORK_NAME_ environment variable is defined, then the value in
* this environment variable overrides the actual hostname and is returned.
* On a cluster resource, the _CLUSTER_NETWORK_NAME_ environment variable
* contains the name of the cluster.
*
*
* The gethostname function queries namespace providers to determine the
* local host name using the SVCID_HOSTNAME GUID defined in the Svgguid.h
* header file. If no namespace provider responds, then the gethostname
* function returns the NetBIOS name of the local computer.
*
*
* The maximum length, in bytes, of the string returned in the buffer
* pointed to by the name parameter is dependent on the namespace provider,
* but this string must be 256 bytes or less. So if a buffer of 256 bytes is
* passed in the name parameter and the namelen parameter is set to 256, the
* buffer size will always be adequate.
*
* @param name A bytearray that receives the local host name.
* @param namelen The length, in bytes, of the buffer pointed to by the name parameter.
* @return If no error occurs, gethostname returns zero. Otherwise, it returns SOCKET_ERROR and a specific error code can be retrieved by calling WSAGetLastError.
*/
public int gethostname(byte[] name, int namelen);
}