负载测试 BindException

Load Test BindException

我们有2个APP,一个是服务端,一个是客户端。

服务器在 weblogic (APP A) 上,客户端在 spring-boot(在 tomcat - APP B 上)。当我们进行 A 向 B 发送请求的负载测试时。但是在某个时间点之后,有一段时间出现大量的 Bind Exception 错误,比负载测试保持 运行 正常,比 Bind Exception,比正常等。如果我们使用更高的 TPS 进行负载测试,我们会更频繁地遇到这些异常。这是场景:

错误是:

org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://XXXXXXX:9090/api/8252": Cannot assign requested address; nested exception is java.net.BindException: Cannot assign requested address
        at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:666)
        at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:613)
        at org.springframework.web.client.RestTemplate.postForLocation(RestTemplate.java:355)
        at com.ttech.tims.tes.pushws.impl.PushConsumerThread.tryToSendPushRequest(PushConsumerThread.java:207)
        at com.ttech.tims.tes.pushws.impl.PushConsumerThread.pushMessage(PushConsumerThread.java:162)
        at com.ttech.tims.tes.pushws.impl.PushConsumerThread.run(PushConsumerThread.java:350)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.net.BindException: Cannot assign requested address
        at sun.nio.ch.Net.connect0(Native Method)
        at sun.nio.ch.Net.connect(Net.java:454)
       at sun.nio.ch.Net.connect(Net.java:446)
        at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
        at weblogic.socket.NIOSocketMuxer.newSocket(NIOSocketMuxer.java:432)
        at weblogic.socket.NIOSocketMuxer.newSocket(NIOSocketMuxer.java:364)
        at weblogic.socket.ChannelSocketFactory.createSocket(ChannelSocketFactory.java:98)
        at weblogic.net.http.HttpClient.openServer(HttpClient.java:384)
        at weblogic.net.http.HttpClient.openServer(HttpClient.java:511)
        at weblogic.net.http.HttpClient.New(HttpClient.java:313)
        at weblogic.net.http.HttpClient.New(HttpClient.java:292)
        at weblogic.net.http.HttpURLConnection.connect(HttpURLConnection.java:295)
        at org.springframework.http.client.SimpleBufferingClientHttpRequest.executeInternal(SimpleBufferingClientHttpRequest.java:78)
        at org.springframework.http.client.AbstractBufferingClientHttpRequest.executeInternal(AbstractBufferingClientHttpRequest.java:48)
        at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:53)
        at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:652)
        ... 6 more

到目前为止我尝试过的:

到目前为止没有任何改进,在某些时候仍然会出现 BindExceptions。有什么建议吗?

感谢 EJP 的建议。这是我解决问题的方法。 Spring Rest 模板正在等待 unix 关闭连接。由于这个原因,在我达到最大套接字连接数后,连接会在 TIME_WAIT 状态下等待。当我们将 Apache ClientHttpRequestFactory 作为 spring RestTemplate 的工厂发送时,apache 会使用其连接池处理请求。这是实现:

    @Bean("apacheRequestFactory")
    public ClientHttpRequestFactory createRequestFactory() {

        PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();

        // maximum connections in the pool
        connectionManager.setMaxTotal(this.systemPropertyBean.getPushConsumerThreadCnt());

        // maximum concurrent connection to the hosts is equal to the our push thread count.
        connectionManager.setDefaultMaxPerRoute(this.systemPropertyBean.getPushConsumerThreadCnt());

        RequestConfig config = RequestConfig.custom()
                .setConnectTimeout(this.systemPropertyBean.getPushTimeoutMillis())// 3 sn
                .setConnectionRequestTimeout(this.systemPropertyBean.getPushTimeoutMillis())
                .setSocketTimeout(this.systemPropertyBean.getPushTimeoutMillis()).build(); // read timeout

/*      the Connection Timeout (http.connection.timeout) – the time to establish the connection with the remote host
        the Socket Timeout (http.socket.timeout) – the time waiting for data – after the connection was established; maximum time of inactivity between two data packets
        the Connection Manager Timeout (http.connection-manager.timeout) – the time to wait for a connection from the connection manager/pool
*/        
        CloseableHttpClient httpClient = HttpClientBuilder.create().setConnectionManager(connectionManager).setDefaultRequestConfig(config).build();
        return new HttpComponentsClientHttpRequestFactory(httpClient);
    }

    @Bean
    public RestTemplate restTemplate() {
// I was using SimpleClientHttpRequestFactory before.
        RestTemplate restTemplate = new RestTemplate(createRequestFactory());
        restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
        restTemplate.getMessageConverters().add(new StringHttpMessageConverter());
        return restTemplate;
    }