Apache camel 使用Netty4Http确保只有一个TCP连接

我正在尝试使用Netty4Http组件发送大量HTTPS请求。 下面是一个示例代码来测试这一点：

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import org.apache.camel.CamelContext;
import org.apache.camel.CamelExecutionException;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.component.netty4.http.NettyHttpComponent;
import org.apache.camel.impl.DefaultCamelContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DataWriter {

    private static final Logger LOG = LoggerFactory.getLogger(DataWriter.class);
    private static DataWriter dataWriter;
    private final CamelContext context;
    private final Map<String, Object> headers = new HashMap<>();
 // private NettyHttpEndpoint nettyHttpEndpoint;
    private ProducerTemplate template;
    private String endpoint;

public static void createDataWriterInstance() {
    if (dataWriter == null) {
        dataWriter = new DataWriter();
    }
}

public static DataWriter getDataWriterInstance() {
    return dataWriter;
}

private DataWriter() {
    this.context = new DefaultCamelContext();
    try {
        final NettyHttpComponent nettyHttpComponent = this.context.getComponent("netty4-http",
                org.apache.camel.component.netty4.http.NettyHttpComponent.class);
        this.context.addComponent("fcpnettyhttpComponent", nettyHttpComponent);
        this.template = this.context.createProducerTemplate();
        this.headers.put("Content-Type", "application/json");
        this.headers.put("Connection", "keep-alive");
        this.headers.put("CamelHttpMethod", "POST");
        String trustCertificate = "&ssl=true&passphrase=" + "123456" + "&keyStoreFile="
                + "C:/Users/jpisaac/certs/publicKey.store"
                + "&trustStoreFile=C:/Users/jpisaac/certs/publicKey.store" ;

        this.endpoint = "netty4-http:"+ "https://xx.xx.xx.xx:8443/server"
                + "?useByteBuf=true&disableStreamCache=true&connectTimeout=30000&requestTimeout=30000&reuseChannel=true"
                + "&keepAlive=true&tcpNoDelay=true&sync=false&reuseAddress=true&sendBufferSize=1000"
                + trustCertificate;
        this.template.start();
        this.context.start();
    } catch (final Exception e) {
        LOG.error("Exception while starting Camel context ", e);
    }
}

public void sendData(final String message) {
    try {
        CompletableFuture<Object> future=this.template.asyncRequestBodyAndHeaders(this.endpoint, message, this.headers);
        System.err.println("Sent data "+message);
    } catch (final CamelExecutionException e) {
        LOG.error("Error while sending data", e);
    }
}

public void stop() {
    try {
        this.template.stop();
        this.context.stop();
    } catch (final Exception e) {
        LOG.error("Exception while stopping Camel context ", e);
    }
}

public static void main(String[] args) throws Exception {
    createDataWriterInstance();
    DataWriter test = getDataWriterInstance();
    int i = 0;
    while (i<50) {
        test.sendData("Hello " + i++);
    }
    while (true) {}
}
}

---

添加HTTP头

连接：保持活动状态
，否则服务器应在每次请求后关闭连接

2017-07-03 11:25:32.367 [Camel (camel-1) thread #0 - ProducerTemplate] DEBUG o.a.c.component.netty4.NettyProducer.openConnection(NettyProducer.java:436) - Created new TCP client bootstrap connecting to 10.194.242.10:8443 with options: Bootstrap(BootstrapConfig(group: NioEventLoopGroup, channelFactory: NioSocketChannel.class, options: {SO_KEEPALIVE=true, TCP_NODELAY=true, SO_REUSEADDR=true, CONNECT_TIMEOUT_MILLIS=30000}, handler: org.apache.camel.component.netty4.http.HttpClientInitializerFactory@4d814f1e, resolver: io.netty.resolver.DefaultAddressResolverGroup@488dff6f))
2017-07-03 11:25:32.366 [Camel (camel-1) thread #4 - ProducerTemplate] DEBUG o.a.c.component.netty4.NettyProducer.openConnection(NettyProducer.java:436) - Created new TCP client bootstrap connecting to 10.194.242.10:8443 with options: Bootstrap(BootstrapConfig(group: NioEventLoopGroup, channelFactory: NioSocketChannel.class, options: {SO_KEEPALIVE=true, TCP_NODELAY=true, SO_REUSEADDR=true, CONNECT_TIMEOUT_MILLIS=30000}, handler: org.apache.camel.component.netty4.http.HttpClientInitializerFactory@4d814f1e, resolver: io.netty.resolver.DefaultAddressResolverGroup@488dff6f))
2017-07-03 11:25:32.366 [Camel (camel-1) thread #3 - ProducerTemplate] DEBUG o.a.c.component.netty4.NettyProducer.openConnection(NettyProducer.java:436) - Created new TCP client bootstrap connecting to 10.194.242.10:8443 with options: Bootstrap(BootstrapConfig(group: NioEventLoopGroup, channelFactory: NioSocketChannel.class, options: {SO_KEEPALIVE=true, TCP_NODELAY=true, SO_REUSEADDR=true, CONNECT_TIMEOUT_MILLIS=30000}, handler: org.apache.camel.component.netty4.http.HttpClientInitializerFactory@4d814f1e, resolver: io.netty.resolver.DefaultAddressResolverGroup@488dff6f))
2017-07-03 11:25:32.367 [Camel (camel-1) thread #1 - ProducerTemplate] DEBUG o.a.c.component.netty4.NettyProducer.openConnection(NettyProducer.java:436) - Created new TCP client bootstrap connecting to 10.194.242.10:8443 with options: Bootstrap(BootstrapConfig(group: NioEventLoopGroup, channelFactory: NioSocketChannel.class, options: {SO_KEEPALIVE=true, TCP_NODELAY=true, SO_REUSEADDR=true, CONNECT_TIMEOUT_MILLIS=30000}, handler: org.apache.camel.component.netty4.http.HttpClientInitializerFactory@4d814f1e, resolver: io.netty.resolver.DefaultAddressResolverGroup@488dff6f))
2017-07-03 11:25:32.366 [Camel (camel-1) thread #2 - ProducerTemplate] DEBUG o.a.c.component.netty4.NettyProducer.openConnection(NettyProducer.java:436) - Created new TCP client bootstrap connecting to 10.194.242.10:8443 with options: Bootstrap(BootstrapConfig(group: NioEventLoopGroup, channelFactory: NioSocketChannel.class, options: {SO_KEEPALIVE=true, TCP_NODELAY=true, SO_REUSEADDR=true, CONNECT_TIMEOUT_MILLIS=30000}, handler: org.apache.camel.component.netty4.http.HttpClientInitializerFactory@4d814f1e, resolver: io.netty.resolver.DefaultAddressResolverGroup@488dff6f))