Jmeter报错：readResponse: java.net.BindException: Address already in use: connect

原创已于 2022-03-04 17:53:24 修改 · 550 阅读

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于 2022-03-03 19:50:05 首次发布

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当在Windows系统上进行大量HTTP请求时，由于默认的端口范围和回收时间限制，可能会遇到端口耗尽的问题。为解决此问题，可以调整Windows的TCP/IP参数以扩大端口范围和缩短回收时间，并优化JMeter配置，如在user.properties中设置httpclient4.retrycount和启用http.connection.stalecheck。如果已调优仍出错，检查是否使用了HttpClient4实现，并确保其配置正确。

原因：windows提供给TCP/IP链接的端口为 1024-5000，并且要四分钟（默认时间长度）来回收它们，就导致我们在短时间内跑大量的请求时，无端口可用，所以导致如上报错。

这里需要对windows负载机的参数进行调优，参见文章:Windows压测负载机调优_饭特稀cn-优快云博客

如果负载机注册表参数已经调优，仍然报错，可以尝试如下方法：

If you are absolutely sure that your server is not overloaded and is configured to accept 100+ connections (defaults are good for development, not for production, they need to be tweaked) you can try work it around as follows:

In user.properties file add the next 2 lines:

httpclient4.retrycount=1
hc.parameters.file=hc.parameters

In hc.parameters file add the following line:
```
http.connection.stalecheck$Boolean=true
```
Both files live in JMeter's bin folder.
You need to restart JMeter to pick the properties up.

Above instructions are applicable for HttpClient4 implementation, make sure you use it, the fastest and the easiest way to set HttpClient4 implementation for all the HTTP Request samplers is using