解决Windows jmeter Non HTTP response message: Address already in use: connect 错误

jMeter报错：

Response code: Non HTTP response code: java.net.BindException
Response message: Non HTTP response message: Address already in use: connect

原因：

When an HTTP request is made, an ephemeral port is allocated for the TCP / IP connection. The ephemeral port range is 32678 – 61000. After the client closes the connection, the connection is placed in the TIME-WAIT state for 60 seconds.

If JMeter (HttpClient) is sending thousands of HTTP requests per second and creating new TCP / IP connections, the system will run out of available ephemeral ports for allocation.

Otherwise, the following messages may appear in the JMeter JTL files:

Non HTTP response code: java.net.BindException
Non HTTP response message: Address already in use

The solution is to enable fast recycling TIME_WAIT sockets.

就是处于等待的60s的临时端口不够用了，解决方法就是降低TIME_WAIT时间

方法：

打开注册列表
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

右击Parameters -> 新建 -> DWORD(32位)值(D) -> name：TcpTimedWaitDe，value：30    –> 设置为30秒，默认是240秒
右击Parameters -> 新建 -> DWORD(32位)值(D) -> name：MaxUserPort，value：65534（十进制） –> 设置最大连接数65534

最后重启电脑