118 lines
3.2 KiB
Java
118 lines
3.2 KiB
Java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.net;
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import java.io.IOException;
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import java.io.FileDescriptor;
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/**
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* non-standard class for creating inbound UNIX-domain socket
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* on the Android platform, this is created in the Linux non-filesystem
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* namespace.
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*
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* On simulator platforms, this may be created in a temporary directory on
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* the filesystem
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*/
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public class LocalServerSocket {
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private final LocalSocketImpl impl;
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private final LocalSocketAddress localAddress;
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/** 50 seems a bit much, but it's what was here */
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private static final int LISTEN_BACKLOG = 50;
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/**
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* Crewates a new server socket listening at specified name.
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* On the Android platform, the name is created in the Linux
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* abstract namespace (instead of on the filesystem).
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*
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* @param name address for socket
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* @throws IOException
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*/
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public LocalServerSocket(String name) throws IOException
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{
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impl = new LocalSocketImpl();
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impl.create(true);
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localAddress = new LocalSocketAddress(name);
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impl.bind(localAddress);
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impl.listen(LISTEN_BACKLOG);
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}
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/**
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* Create a LocalServerSocket from a file descriptor that's already
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* been created and bound. listen() will be called immediately on it.
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* Used for cases where file descriptors are passed in via environment
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* variables
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*
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* @param fd bound file descriptor
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* @throws IOException
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*/
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public LocalServerSocket(FileDescriptor fd) throws IOException
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{
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impl = new LocalSocketImpl(fd);
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impl.listen(LISTEN_BACKLOG);
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localAddress = impl.getSockAddress();
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}
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/**
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* Obtains the socket's local address
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*
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* @return local address
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*/
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public LocalSocketAddress getLocalSocketAddress()
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{
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return localAddress;
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}
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/**
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* Accepts a new connection to the socket. Blocks until a new
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* connection arrives.
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*
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* @return a socket representing the new connection.
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* @throws IOException
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*/
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public LocalSocket accept() throws IOException
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{
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LocalSocketImpl acceptedImpl = new LocalSocketImpl();
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impl.accept (acceptedImpl);
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return new LocalSocket(acceptedImpl);
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}
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/**
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* Returns file descriptor or null if not yet open/already closed
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*
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* @return fd or null
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*/
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public FileDescriptor getFileDescriptor() {
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return impl.getFileDescriptor();
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}
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/**
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* Closes server socket.
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*
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* @throws IOException
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*/
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public void close() throws IOException
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{
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impl.close();
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}
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}
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