Android local socket 进程间通讯实验

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目的：实现本地 C程序与apk的socket通信。

原理：没有涉及到网络通信，所以使用Android封装的local socket要更简单

参考：系统源码RIL模块

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C程序 服务端：

    1)  server_fd = socket_local_server (SOCKET_NAME_XXH,

                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);

2)  s_fdListen = listen(server_fd, 4);

3)  while((socket = accept(server_fd, NULL, NULL)) > 0)

C 客户端：

        1)  fd =socket_local_client(OCKET_NAME_XXH,

                ANDROID_SOCKET_NAMESPACE_ABSTRACT, SOCK_STREAM);

        2)  write(fd, "hello", 5);

JAVA 客户端：

        1)  localSocket = new LocalSocket();

        2)  localSocket.connect(new LocalSocketAddress(socketAddress));

        3)  OutputStream os = localSocket.getOutputStream();

Namespace:

LocalSocketAddress.Namespace  ABSTRACT  A socket in the Linux abstract namespace   

LocalSocketAddress.Namespace  FILESYSTEM  A socket named with a normal filesystem path.  

LocalSocketAddress.Namespace  RESERVED  A socket in the Android reserved namespace in /dev/socket. 

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