断线重连
一对一请求
通知、粘性通知
串行请求合并
包分片处理(AbstractFragmentRequestQueue)
缓存
拦截器
支持rxjava，提供类似于retrofit的支持
Maven
<dependency> <groupId>com.github.typ0520</groupId> <artifactId>bizsocket-rx</artifactId> <version>1.0.0</version> </dependency>
or Gradle
buildscript { repositories { jcenter() } } dependencies { compile 'com.github.typ0520:bizsocket-rx:1.0.0' }
如果想使用此库，客户端和服务器的通讯协议中必须要有命令号、包序列号这两个字段
命令号代表请求类型，可以想象成http中url的作用
包序列号是数据包的唯一索引，客户端发起请求时为数据包生成一个唯一索引，服务器返回请求对应的结果时把这个包序列号带回去
协议可以类似于下面这种：
也可以类似于下面这样的每个数据包都是一段json字符串，包与包之间用换行符分割
{"cmd": xxx , "packetId": xxx , ...... }
数据包的创建是通过这两个抽象类PacketFactory、Packet，整个库的数据流转都是通过命令号、包序列号这两个字段来完成的，字段名、出现的位置以及形式不限，只要有这两个字段就适用此库
sample中client与server之间的通讯协议是
下面的代码片段来自sample，建议把代码拉下来看
1、 首先需要创建一个数据包类继承自Packet
public class SamplePacket extends Packet { static volatile int currentSeq = 0; public int length; public int cmd; public int seq; public String content; @Override public int getCommand() { //覆盖父类的抽象方法 return cmd; } @Override public String getPacketID() { //覆盖父类的抽象方法 return String.valueOf(seq); } //获取请求数据包byte[]，写给服务器 public byte[] toBytes() { ByteArrayOutputStream bos = new ByteArrayOutputStream(); BufferedSink bufferedSink = Okio.buffer(Okio.sink(bos)); try { //包长 = 内容长度 + 包头固定的12个字节 ByteString byteString = ByteString.encodeUtf8(content); bufferedSink.writeInt(byteString.size() + 12); bufferedSink.writeInt(cmd); bufferedSink.writeInt(seq); bufferedSink.write(byteString); bufferedSink.flush(); } catch (IOException e) { e.printStackTrace(); } return bos.toByteArray(); } }
2、创建PacketFactory，主要用来从流中解析出server发给client的数据包
public class SamplePacketFactory extends PacketFactory { @Override public Packet getRequestPacket(Packet reusable,Request request) { return new SamplePacket(request.command(),request.body()); } @Override public Packet getHeartBeatPacket(Packet reusable) { return new SamplePacket(SampleCmd.HEARTBEAT.getValue(), ByteString.encodeUtf8("{}")); } @Override public Packet getRemotePacket(Packet reusable,BufferedSource source) throws IOException { SamplePacket packet = new SamplePacket(); packet.length = reader.readInt(); packet.cmd = reader.readInt(); packet.seq = reader.readInt(); //减去协议头的12个字节长度 packet.content = reader.readString(packet.length - 12, Charset.forName("utf-8")); return packet; } }
3、配置client
public class SampleClient extends AbstractBizSocket { public SampleClient(Configuration configuration) { super(configuration); } @Override protected PacketFactory createPacketFactory() { return new SamplePacketFactory(); } }
3、启动client，以j2se为例写一个main方法
public static void main(String[] args) { SampleClient client = new SampleClient(new Configuration.Builder() .host(“127.0.0.1”) .port(9103) .readTimeout(TimeUnit.SECONDS,30) .heartbeat(60) .build());
client.getInterceptorChain().addInterceptor(new Interceptor() { @Override public boolean postRequestHandle(RequestContext context) throws Exception { System.out.println(“发现一个请求postRequestHandle: ” + context); return false; }
@Override public boolean postResponseHandle(int command, Packet responsePacket) throws Exception { System.out.println(“收到一个包postResponseHandle: ” + responsePacket); return false; } });
try { //连接 client.connect(); //启动断线重连 client.getSocketConnection().bindReconnectionManager(); //开启心跳 client.getSocketConnection().startHeartBeat(); } catch (Exception e) { e.printStackTrace(); }
//注册通知，接收服务端的推送 client.subscribe(client, SampleCmd.NOTIFY_PRICE.getValue(), new ResponseHandler() { @Override public void sendSuccessMessage(int command, ByteString requestBody, Packet responsePacket) { System.out.println(“cmd: ” + command + ” ,requestBody: ” + requestBody + ” responsePacket: ” + responsePacket); }
@Override public void sendFailureMessage(int command, Throwable error) { System.out.println(command + ” ,err: ” + error); } });
//发起一对一请求
String json = ”{"productId" : "1","isJuan" : "0","type" : "2","sl" : "1"}”; client.request(new Request.Builder().command(SampleCmd.CREATE_ORDER.getValue()).utf8body(json).build(), new ResponseHandler() { @Override public void sendSuccessMessage(int command, ByteString requestBody, Packet responsePacket) { System.out.println(“cmd: ” + command + ” ,requestBody: ” + requestBody + ” attach: ” + ” responsePacket: ” + responsePacket); }
//如果想用rxjava的形式调用也是支持的,提供了类似于retrofit通过动态代理创建的service类来调用
BizSocketRxSupport rxSupport = new BizSocketRxSupport.Builder() .requestConverter(new JSONRequestConverter()) .requestConverter(new JSONRequestConverter()) .bizSocket(client) .build(); SampleService service = rxSupport.create(SampleService.class);
JSONObject params = new JSONObject(); try { params.put(“pageSize”,”10000”); } catch (JSONException e) { e.printStackTrace(); } service.queryOrderList(params).subscribe(new Subscriber() { @Override public void onCompleted() {
}
@Override public void onError(Throwable e) {
@Override public void onNext(JSONObject jsonObject) { System.out.println(“rx response: ” + jsonObject); } });
//阻塞主线程，防止程序退出，可以想象成android中的Looper类
while (true) { try { Thread.sleep(10000); } catch (InterruptedException e) { e.printStackTrace(); } } }
