Android 与 native C 利用本地socket进行消息传递_native层c++编写socket与android通讯-优快云博客

本文链接：https://blog.youkuaiyun.com/sunlion81/article/details/10137905

这篇博客详细介绍了如何在Android应用层与native C代码之间利用本地socket进行消息的双向传递，包括Java源码和C代码的实现细节。

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Android 与 native C 利用本地socket进行消息传递

Java源码：

// 服务器端
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import android.net.LocalServerSocket;
import android.net.LocalSocket;
import android.util.Log;

public class SocketListener extends Thread {
	
	@Override
	public void run() {
		Log.i(getClass().getName(), "run()");
		try {
			LocalServerSocket server = new LocalServerSocket("com.example.mysoftphone.localsocket");
			while (true) {
				LocalSocket receiver = server.accept();
				Log.i(getClass().getName(), "server.accept()");
				if (receiver != null) {
					InputStream input = receiver.getInputStream();
					InputStreamReader inputReader = new InputStreamReader(input);					
					BufferedReader bufferReader = new BufferedReader(inputReader);
					String line = bufferReader.readLine();
					// String line1 = new String(line.getBytes("UTF-8"));
					Log.i(getClass().getName(), line);
				}
			}
		} catch (Exception e) {
			Log.e(getClass().getName(), e.getMessage());
		} finally {
			
		}
	}
	
}

C代码：

// 客户端
#include <sys/types.h>  
#include <sys/socket.h>  
#include <sys/un.h>  
#include <unistd.h>  
#include <stdlib.h>  
#include <stdio.h>  
#include <android/log.h>

#define THIS_FILE "ipc_client.c"


int send_remote_request(char *msg, int size)
{
	int result;

	int len;
	int namelen;

	int localsocket;
	struct sockaddr_un remote;

	char *name = "com.example.mysoftphone.localsocket";//与java上层相同哦

	localsocket = socket(AF_UNIX, SOCK_STREAM, 0);
	if (localsocket == -1) 
	{
		__android_log_print(ANDROID_LOG_ERROR, THIS_FILE, "socket failed!");
		return -1;
	}	

	remote.sun_family = AF_UNIX;

	remote.sun_path[0] = '\0';  /* abstract namespace */
	strcpy(remote.sun_path+1, name);

	namelen = strlen(name);
	len = 1 + namelen + offsetof(struct sockaddr_un, sun_path);

	result = connect(localsocket, (struct sockaddr *)&remote, len);
	if (result == -1) 
	{
		__android_log_print(ANDROID_LOG_ERROR, THIS_FILE, "connect failed!");
		return -1;
	}

	result = send(localsocket, msg, size,0);
	if (result == -1) 
	{
		__android_log_print(ANDROID_LOG_ERROR, THIS_FILE, "send failed!");
		return -1;
	}

	close(localsocket);

	return 0;
}