{"id":1065,"date":"2020-01-04T16:29:18","date_gmt":"2020-01-04T08:29:18","guid":{"rendered":"http:\/\/www.max-shu.com\/blog\/?p=1065"},"modified":"2020-01-04T16:29:18","modified_gmt":"2020-01-04T08:29:18","slug":"android%e4%b8%8budp-socket%e6%94%b6%e5%8f%91%ef%bc%88%e5%90%ab64k%e5%ad%97%e8%8a%82%e5%a4%a7%e5%8c%85%ef%bc%89","status":"publish","type":"post","link":"http:\/\/www.max-shu.com\/blog\/?p=1065","title":{"rendered":"Android\u4e0bUDP socket\u6536\u53d1\uff08\u542b>64K\u5b57\u8282\u5927\u5305\uff09"},"content":{"rendered":"<p>\u4e00\u4e2a\u5b9e\u73b0udp\u6536\u53d1\u7684\u4f8b\u5b50\uff0c\u5728Android 3.x\u4ee5\u4e0a\u7248\u672c\uff0c\u4e0d\u80fd\u76f4\u63a5\u5728\u4e3b\u7ebf\u7a0b\u4e2d\u53d1\u9001\u7f51\u7edc\u6570\u636e\u5305\uff0c\u4ee5\u514dui\u7ebf\u7a0b\u963b\u585e\u3002<\/p>\n<p>\u8fd9\u4e2a\u65b9\u5f0f\u6548\u7387\u4e0d\u9ad8\uff0c\u4e00\u65b9\u9762\u8fd8\u5f97\u51cf\u5c11\u62f7\u8d1d\u6b21\u6570\uff0c\u53e6\u4e00\u65b9\u9762\u6700\u597d\u8fd8\u662f\u4ee5c\u5b9e\u73b0\uff0c\u5c01\u88c5\u6210so\u5e93\uff0c\u7136\u540ejniLib\u65b9\u5f0f\u6765\u8c03\u7528\u3002<\/p>\n<p>\u56e0\u4e3aUDP\u5355\u6b21\u6700\u5927\u53d1\u900164kB\u7684\u5305\uff0c\u6240\u4ee5\u66f4\u5927\u7684\u5305\u53d1\u9001\u524d\u9700\u8981\u62c6\u5206\uff0c\u63a5\u6536\u65f6\u9700\u8981\u5408\u5e76\u3002<\/p>\n<p>\u4ee3\u7801\u5f88\u7b80\u5355\uff0c\u4e0d\u505a\u8fc7\u591a\u89e3\u91ca\u3002<\/p>\n<h3><strong>\u53d1\u9001\u7c7b\uff1a<\/strong><\/h3>\n<div>\n<div>public\u00a0class\u00a0UdpSendThread\u00a0extends\u00a0Thread\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0static\u00a0\u00a0final\u00a0\u00a0String\u00a0TAG\u00a0=\u00a0&#8220;UdpSendThread&#8221;;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0boolean\u00a0isRunning\u00a0=\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0DatagramSocket\u00a0mSocket;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0static\u00a0\u00a0final\u00a0\u00a0int\u00a0UDP_PACKET_USER_MAX_SIZE\u00a0=\u00a065506;\u00a0\/\/UDP\u5305\u957f65535\u00a0&#8211;\u00a020Bytes\u00a0IP\u00a0header\u00a0&#8211;\u00a08Bytes\u00a0UDP\u00a0header\u00a0&#8211;\u00a01Byte\u81ea\u5b9a\u4e49\u7684\u5934\u5e8f\u5217\u53f7<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0ArrayList&lt;SendMsg&gt;\u00a0mArrayListSnd\u00a0=\u00a0new\u00a0ArrayList&lt;SendMsg&gt;();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0boolean\u00a0mArrayListSndSync\u00a0=\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0class\u00a0SendMsg{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0byte[]\u00a0bytes;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0length;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0delayMs;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String\u00a0address;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0port;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0UdpSendThread()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0isRunning\u00a0=\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.clear();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0Stop()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0isRunning\u00a0=\u00a0false;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mSocket\u00a0!=\u00a0null)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.close();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0null;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.clear();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0@Override<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0run()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0super.run();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0new\u00a0DatagramSocket();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}catch\u00a0(SocketException\u00a0e){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;DatagramSocket\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while\u00a0(true)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if\u00a0(!isRunning)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mArrayListSnd.isEmpty()){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Thread.sleep(10);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}catch\u00a0(Exception\u00a0e){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;Thread.sleep\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0continue;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0SendMsg\u00a0sendMsg\u00a0=\u00a0mArrayListSnd.get(0);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*******************\u53d1\u9001\u6570\u636e***********************\/<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0InetAddress\u00a0address\u00a0=\u00a0InetAddress.getByName(sendMsg.address);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/1.\u6784\u9020\u6570\u636e\u5305<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0DatagramPacket\u00a0packet\u00a0=\u00a0new\u00a0DatagramPacket(sendMsg.bytes,<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sendMsg.length,\u00a0address,\u00a0sendMsg.port);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/3.\u4ece\u6b64\u5957\u63a5\u5b57\u53d1\u9001\u6570\u636e\u62a5\u5305\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.send(packet);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0delay\u00a0=\u00a0sendMsg.delayMs;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.remove(0);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Thread.sleep(delay);\u00a0\/\/\u9632\u6b62\u4e22\u5305\uff0c\u4f46\u662f\u53d1\u9001\u592a\u5feb\u8fd8\u662f\u4f1a\u4e22\u5305\uff0c\u770b\u6765\u8fd8\u662f\u5f97\u4ecelinux\u5c42\u5c01\u88c5\u6210so\u6765\u7528\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(UnknownHostException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;run:\u00a0socket.send\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(SocketException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;run:\u00a0socket.send\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(IOException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;run:\u00a0DatagramSocket\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(InterruptedException\u00a0e){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;run:\u00a0Thread.sleep\u00a0interrupted!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mSocket\u00a0!=\u00a0null)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.close();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0null;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.clear();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\/**<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u53d1\u9001\u6d88\u606f<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0boolean\u00a0SendUdpMsg(byte[]\u00a0bytes,\u00a0int\u00a0length,\u00a0String\u00a0address,\u00a0int\u00a0port)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u4e0b\u9762\u00a0UDP_PACKET_USER_MAX_SIZE\u00a0+\u00a01\u00a0\u76841\u00a0\u8868\u793a\u4fdd\u7559\u4e00\u5b57\u8282\u6d88\u606f\u5934\uff0c\u5373\u5e8f\u5217\u53f7\uff0c\u6700\u5927\u652f\u6301\u4e0a\u5c42length\u5927\u5c0f\u4e3aUDP\u5305\u6700\u5927\u768464kBytes\uff08\u5b9e\u9645\u4e2d\u8fd8\u8981\u53bb\u9664\u5934\uff09\u4e58\u4ee5254\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u5e8f\u5217\u53f7\uff1a\u00a0255\u8868\u793a\u8be5\u5305\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u4e0a\u5c42\u6570\u636e\u5305\uff0c\u65e0\u987b\u7ec4\u88c5\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a00\u00a0\u00a0\u8868\u793a\u8be5\u5305\u7684\u4e0a\u5c42\u6570\u636e\u5305\u592a\u5927\uff0c\u8be5\u5305\u662f\u5b83\u7684\u4e00\u4e2a\u8d77\u59cb\u5b50\u5305\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a01,2,3&#8230;250\u00a0\u8868\u793a\u7ee7\u7eed\u4e0a\u97620\u5b50\u5305\u7684\u6570\u636e\u5305\uff0c\u8be5\u5305\u662f\u5b83\u7684\u4e2d\u95f4\u5b50\u5305\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0254\u00a0\u8868\u793a\u4e0a\u9762\u4e00\u7cfb\u5217\u5b50\u5305\u6240\u8868\u793a\u7684\u4e0a\u5c42\u5b50\u5305\u7ed3\u675f\uff0c\u8be5\u5305\u662f\u6700\u540e\u4e00\u4e2a\u5b50\u5305\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u5982\u679c\u4e2d\u95f4\u5e8f\u53f7\u65ad\u4e86\uff0c\u8868\u793a\u4e2d\u95f4\u6709\u4e22\u5305\uff0c\u65e0\u6cd5\u7ec4\u88c5\u7ed9\u4e0a\u5c42\uff0c\u6536\u5230\u7684\u5176\u4ed6\u4e2d\u95f4\u5b50\u5305\u76f4\u63a5\u4e22\u5f03\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if\u00a0((length\u00a0&gt;\u00a0(UDP_PACKET_USER_MAX_SIZE\u00a0*\u00a0254))\u00a0||\u00a0length\u00a0==\u00a00)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;SendUdpMsg:\u00a0length\u00a0is\u00a0too\u00a0big\u00a0or\u00a0zero,\u00a0can&#8217;t\u00a0support:\u00a0&#8221;\u00a0+\u00a0length);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0false;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0userBytesOffset\u00a0=\u00a00;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0userBytesRemainLen\u00a0=\u00a0length;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if\u00a0(length\u00a0&gt;\u00a0UDP_PACKET_USER_MAX_SIZE)\u00a0{\u00a0\u00a0\/\/\u9700\u62c6\u5305<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0packetNum\u00a0=\u00a0length\u00a0\/\u00a0UDP_PACKET_USER_MAX_SIZE;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0packetM\u00a0=\u00a0length\u00a0%\u00a0UDP_PACKET_USER_MAX_SIZE;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if\u00a0(packetM\u00a0==\u00a00)\u00a0{\u00a0\/\/\u521a\u597d\u6574\u9664\uff0c\u5219\u5faa\u73af\u91cc\u9762\u5c11\u53d1\u4e00\u4e2a\u5305\uff0c\u56e0\u4e3a\u6700\u540e\u4e00\u4e2a\u5305\u7684header\u00a0serial\u4e0d\u4e00\u6837<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetNum\u00a0-=\u00a01;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0i;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for\u00a0(i\u00a0=\u00a00;\u00a0i\u00a0&lt;\u00a0packetNum;\u00a0i++)\u00a0{\u00a0\/\/\u53d1\u9001\u524d\u9762\u7684\u5b50\u5305<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0SendMsg\u00a0msg\u00a0=\u00a0new\u00a0SendMsg();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.length\u00a0=\u00a0UDP_PACKET_USER_MAX_SIZE\u00a0+\u00a01;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.bytes\u00a0=\u00a0new\u00a0byte[msg.length];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.bytes[0]\u00a0=\u00a0(byte)\u00a0i;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(bytes,\u00a0i\u00a0*\u00a0UDP_PACKET_USER_MAX_SIZE,\u00a0msg.bytes,\u00a01,\u00a0UDP_PACKET_USER_MAX_SIZE);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.address\u00a0=\u00a0new\u00a0String(address);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.port\u00a0=\u00a0port;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.delayMs\u00a0=\u00a020;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.add(msg);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0userBytesOffset\u00a0=\u00a0i\u00a0*\u00a0UDP_PACKET_USER_MAX_SIZE;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0userBytesRemainLen\u00a0=\u00a0length\u00a0&#8211;\u00a0userBytesOffset;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u53d1\u9001\u6700\u540e\u4e00\u4e2a\u5b50\u5305\uff0c\u6216\u8005\u6574\u4e2a\u4e0a\u5c42\u5305\u4e00\u6b21\u53d1\u9001<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0SendMsg\u00a0msg\u00a0=\u00a0new\u00a0SendMsg();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.length\u00a0=\u00a0userBytesRemainLen\u00a0+\u00a01;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.bytes\u00a0=\u00a0new\u00a0byte[msg.length];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if\u00a0(userBytesOffset\u00a0==\u00a00)\u00a0{\u00a0\/\/\u4e0a\u5c42\u957f\u5ea6\u53ef\u4ee5\u5728\u4e00\u4e2aUDP\u5305\u4e2d\u53d1\u9001\uff0c\u4e0d\u62c6\u5305<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.bytes[0]\u00a0=\u00a0(byte)\u00a0255;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.delayMs\u00a0=\u00a010;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0else\u00a0{\u00a0\/\/\u6700\u540e\u4e00\u4e2a\u5b50\u5305<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.bytes[0]\u00a0=\u00a0(byte)\u00a0254;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.delayMs\u00a0=\u00a010;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(bytes,\u00a0userBytesOffset,\u00a0msg.bytes,\u00a01,\u00a0userBytesRemainLen);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.address\u00a0=\u00a0new\u00a0String(address);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.port\u00a0=\u00a0port;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mArrayListSnd.add(msg);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>}<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n<h3><strong>\u63a5\u6536\u7c7b\uff1a<\/strong><\/h3>\n<div>\n<div>public\u00a0class\u00a0UdpReceiveThread\u00a0extends\u00a0Thread\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0static\u00a0\u00a0final\u00a0\u00a0String\u00a0TAG\u00a0=\u00a0&#8220;UdpReceiveThread&#8221;;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\/\/IP\u5730\u5740<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0String\u00a0mAddress;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\/\/\u7aef\u53e3<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0int\u00a0mPort;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0Handler\u00a0mHandler;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0DatagramSocket\u00a0mSocket;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0boolean\u00a0isRunning\u00a0=\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0byte[]\u00a0packetBuffer;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0int\u00a0packetBufferLen;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0\u00a0static\u00a0\u00a0final\u00a0\u00a0int\u00a0UDP_PACKET_USER_MAX_SIZE\u00a0=\u00a065506;\u00a0\/\/UDP\u5305\u957f65535\u00a0&#8211;\u00a020Bytes\u00a0IP\u00a0header\u00a0&#8211;\u00a08Bytes\u00a0UDP\u00a0header\u00a0&#8211;\u00a01Byte\u81ea\u5b9a\u4e49\u7684\u5934\u5e8f\u5217\u53f7<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0UdpReceiveThread(Handler\u00a0handler,\u00a0String\u00a0address,\u00a0int\u00a0port)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this.mHandler\u00a0=\u00a0handler;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this.mAddress\u00a0=\u00a0address;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0this.mPort\u00a0=\u00a0port;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0isRunning\u00a0=\u00a0true;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0Stop()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0isRunning\u00a0=\u00a0false;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mSocket\u00a0!=\u00a0null)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.close();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0null;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0@Override<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0public\u00a0void\u00a0run()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0super.run();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ReceivePacket();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\/**<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u8bbe\u7f6e<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0void\u00a0ReceivePacket()\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0new\u00a0DatagramSocket(mPort);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}catch\u00a0(SocketException\u00a0e){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;DatagramSocket\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int\u00a0packetNo\u00a0=\u00a00;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while\u00a0(true)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(!\u00a0isRunning){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*******************\u63a5\u6536\u6570\u636e***********************\/<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/1.\u6784\u9020\u00a0DatagramPacket\uff0c\u7528\u6765\u63a5\u6536\u957f\u5ea6\u4e3a\u00a0length\u00a0\u7684\u6570\u636e\u5305\u3002<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0final\u00a0byte[]\u00a0bytes1\u00a0=\u00a0new\u00a0byte[UDP_PACKET_USER_MAX_SIZE\u00a0+\u00a0100];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0DatagramPacket\u00a0receiverPacket\u00a0=\u00a0new\u00a0DatagramPacket(bytes1,\u00a0bytes1.length);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.receive(receiverPacket);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0byte\u00a0headSerial\u00a0=\u00a0receiverPacket.getData()[0];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/Log.e(TAG,\u00a0&#8220;headSerial:\u00a0&#8221;\u00a0+\u00a0headSerial);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(headSerial\u00a0==\u00a0(byte)255)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBufferLen\u00a0=\u00a0receiverPacket.getLength()\u00a0&#8211;\u00a01;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBuffer\u00a0=\u00a0new\u00a0byte[packetBufferLen];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(receiverPacket.getData(),\u00a01,\u00a0packetBuffer,\u00a00,\u00a0packetBufferLen);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sendMsg(0,\u00a0new\u00a0String(packetBuffer,\u00a00,\u00a0packetBufferLen));<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}else\u00a0if(headSerial\u00a0==\u00a0(byte)254){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(packetBufferLen\u00a0&gt;=\u00a0packetBuffer.length){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;ReceivePacket:\u00a0packetBufferLen\u00a0is\u00a0too\u00a0big:\u00a0&#8220;+\u00a0packetBufferLen);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0continue;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(receiverPacket.getData(),\u00a01,\u00a0packetBuffer,\u00a0packetBufferLen,\u00a0receiverPacket.getLength()\u00a0-1);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBufferLen\u00a0=\u00a0packetBufferLen\u00a0+\u00a0receiverPacket.getLength()\u00a0&#8211;\u00a01;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/Log.e(TAG,\u00a0&#8220;Len:\u00a0&#8221;\u00a0+\u00a0packetBufferLen);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0sendMsg(0,\u00a0new\u00a0String(packetBuffer,\u00a00,\u00a0packetBufferLen));<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}else\u00a0if(headSerial\u00a0==\u00a0(byte)0){<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBufferLen\u00a0=\u00a0UDP_PACKET_USER_MAX_SIZE;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBuffer\u00a0=\u00a0new\u00a0byte[UDP_PACKET_USER_MAX_SIZE\u00a0*\u00a0254];<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(receiverPacket.getData(),\u00a01,\u00a0packetBuffer,\u00a00,\u00a0UDP_PACKET_USER_MAX_SIZE);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}else{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0packetBufferLen\u00a0+=\u00a0UDP_PACKET_USER_MAX_SIZE;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0System.arraycopy(receiverPacket.getData(),\u00a01,\u00a0packetBuffer,\u00a0headSerial\u00a0*\u00a0UDP_PACKET_USER_MAX_SIZE,\u00a0UDP_PACKET_USER_MAX_SIZE);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(UnknownHostException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;socket.receive\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(SocketException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;socket.receive\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(IOException\u00a0e)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Log.e(TAG,\u00a0&#8220;socket.receive\u00a0error\u00a0!!!&#8221;);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if(mSocket\u00a0!=\u00a0null)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket.close();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mSocket\u00a0=\u00a0null;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\/**<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u53d1\u9001\u6d88\u606f\u5230UI<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0private\u00a0void\u00a0sendMsg(int\u00a0what,\u00a0Object\u00a0object)\u00a0{<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Message\u00a0msg\u00a0=\u00a0new\u00a0Message();<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.what\u00a0=\u00a0what;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msg.obj\u00a0=\u00a0object;<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mHandler.sendMessage(msg);<\/div>\n<div>\u00a0\u00a0\u00a0\u00a0}<\/div>\n<div>}<\/div>\n<\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u4e2a\u5b9e\u73b0udp\u6536\u53d1\u7684\u4f8b\u5b50\uff0c\u5728Android 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