java版sdk运行一段时间后，出现客户端连接不够用的情况

[borenchan]

问题描述：

项目集成了SDK运行一段时间后，AppBuilderClient.createConversation或者chat 都提示客户端超时报错。本地压测时因为开启了百度云限流不能复现。

原因排查

AppBuilderClient内部创建的 httpclient 初始化时未设置连接池相关参数，且可能存在连接使用完毕未正确释放的情况。

SDK版本：1.0.3

        <!--百度 APP builder平台-->
        <dependency>
            <groupId>com.baidubce</groupId>
            <artifactId>appbuilder</artifactId>
            <version>1.0.3</version>
        </dependency>

错误日志：

org.apache.hc.core5.http.ConnectionRequestTimeoutException: Timeout deadline: 180000 MILLISECONDS, actual: 180000 MILLISECONDS
	at org.apache.hc.client5.http.impl.classic.InternalExecRuntime.acquireEndpoint(InternalExecRuntime.java:127)
	at org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:118)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)
	at org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:172)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)
	at org.apache.hc.client5.http.impl.classic.HttpRequestRetryExec.execute(HttpRequestRetryExec.java:93)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)
	at org.apache.hc.client5.http.impl.classic.ContentCompressionExec.execute(ContentCompressionExec.java:128)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement$1.proceed(ExecChainElement.java:57)
	at org.apache.hc.client5.http.impl.classic.RedirectExec.execute(RedirectExec.java:116)
	at org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
	at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute$original$yVoqgQH0(InternalHttpClient.java:178)
	at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute$original$yVoqgQH0$accessor$4KMyyT9m(InternalHttpClient.java)
	at org.apache.hc.client5.http.impl.classic.InternalHttpClient$auxiliary$O7QwN2M9.call(Unknown Source)
	at org.apache.skywalking.apm.agent.core.plugin.interceptor.enhance.InstMethodsInter.intercept(InstMethodsInter.java:86)
	at org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:67)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:200)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:143)
	at org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:117)
	at com.baidubce.appbuilder.base.utils.http.HttpClient.execute(HttpClient.java:203)
	at com.baidubce.appbuilder.console.appbuilderclient.AppBuilderClient.innerCreateConversation(AppBuilderClient.java:61)
	at com.baidubce.appbuilder.console.appbuilderclient.AppBuilderClient.createConversation(AppBuilderClient.java:46)

[userpj]

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