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Merge pull request #233 from nats-io/2.4.4
2.4.4
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package io.nats.examples; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.io.OutputStream; | ||
| import java.net.InetSocketAddress; | ||
| import java.net.ServerSocket; | ||
| import java.net.Socket; | ||
| import java.net.SocketException; | ||
| import java.util.logging.Level; | ||
| import java.util.logging.Logger; | ||
|
|
||
| public class RawTCPLatencyTest { | ||
|
|
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| static boolean isServer; | ||
| static String host = "localhost"; | ||
| static int port = 1234; | ||
| static int warmIters = 1000, runIters = 10000; | ||
|
|
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| static InputStream in; | ||
| static OutputStream out; | ||
|
|
||
| public static void main(String[] args) { | ||
| if (args.length < 1) { | ||
| System.out.println("Parameters: server/client host port"); | ||
| return; | ||
| } | ||
| isServer = args[0].startsWith("s"); | ||
| if (args.length > 1) { | ||
| host = args[1]; | ||
| } | ||
| if (args.length > 2) { | ||
| port = Integer.parseInt(args[2]); | ||
| } | ||
| try { | ||
| if (isServer) { | ||
| runServer(); | ||
| } else { | ||
| runClient(); | ||
| } | ||
| } catch (IOException ex) { | ||
| Logger.getLogger(RawTCPLatencyTest.class.getName()).log(Level.SEVERE, null, ex); | ||
| } | ||
| } | ||
|
|
||
| private static void runServer() throws IOException { | ||
| ServerSocket serverSocket = new ServerSocket(port); | ||
| while (true) { | ||
| Socket socket = serverSocket.accept(); | ||
| System.out.println("Connected"); | ||
| socket.setTcpNoDelay(true); | ||
| socket.setReceiveBufferSize(2 * 1024 * 1024); | ||
| socket.setSendBufferSize(2 * 1024 * 1024); | ||
| in = socket.getInputStream(); | ||
| out = socket.getOutputStream(); | ||
| try { | ||
| while (true) { | ||
| int rq = in.read(); | ||
| out.write(rq); | ||
| } | ||
| } catch (IOException e) { | ||
| System.out.println("Disconnected"); | ||
| } | ||
| } | ||
| } | ||
|
|
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| private static void runClient() throws SocketException, IOException { | ||
| Socket socket = new Socket(); | ||
| socket.setTcpNoDelay(true); | ||
| socket.setReceiveBufferSize(2 * 1024 * 1024); | ||
| socket.setSendBufferSize(2 * 1024 * 1024); | ||
| socket.connect(new InetSocketAddress(host, port), 1000); | ||
| in = socket.getInputStream(); | ||
| out = socket.getOutputStream(); | ||
| System.out.println("Connected"); | ||
| for (int i = 0; i < warmIters; i++) { | ||
| sendRecv(); | ||
| } | ||
| System.out.println("Warmed"); | ||
| long t0 = System.nanoTime(); | ||
| for (int i = 0; i < runIters; i++) { | ||
| sendRecv(); | ||
| } | ||
| long t1 = System.nanoTime(); | ||
| System.out.println("Average latency " + (1.0 * (t1 - t0)) / (1000000.0 * runIters) + " ms"); | ||
| socket.close(); | ||
| } | ||
|
|
||
| private static void sendRecv() throws IOException { | ||
| out.write(11); | ||
| in.read(); | ||
| } | ||
| } |
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