Java Spring - server.connection-timeout 不起作用
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Spring - server.connection-timeout not working
提问by Matthew Layton
In my application.propertiesfile I have...
在我的application.properties文件中，我有...
server.port=8086
server.connection-timeout=15000
I know that the file is being loaded correctly because the server is running on port 8086.
我知道文件正在正确加载，因为服务器在端口 8086 上运行。
In the application I have a RestController
在应用程序中，我有一个 RestController
@RestController
class TestController {
@GetMapping()
fun getValues(): ResponseEntity<*> {
return someLongRunningProcessPossiblyHanging()
}
}
When I call the endpoint, the request never times out, it just hangs indefinitely.
当我调用端点时，请求永远不会超时，它只是无限期挂起。
Am I missing something?
我错过了什么吗？
NOTE:I've also been informed that Tomcat uses this field in minutes, not milliseconds (rather unusual choice IMO). I've tried setting this to server.connection-timeout=1denoting 1 minute, but this didn't work either.
注意：我还被告知 Tomcat 在几分钟内使用此字段，而不是几毫秒（IMO 的选择非常不寻常）。我尝试将其设置为server.connection-timeout=1表示 1 分钟，但这也不起作用。
NOTE:I don't want anotherHTTP request to cause the previous request to time out, I want each HTTP request to timeout of it's own accord, should too much time elapse to serve the request.
注意：我不希望另一个HTTP 请求导致前一个请求超时，我希望每个 HTTP 请求都自行超时，如果处理请求的时间过长。
采纳答案by Andrei Damian-Fekete
connection-timeoutdoes not apply to long running requests. It does apply to the initial connection, when the server waits for the client to say something.
connection-timeout不适用于长时间运行的请求。当服务器等待客户端说些什么时，它确实适用于初始连接。
Tomcat docs (not Spring Boot) define it as The number of milliseconds this Connector will wait, after accepting a connection, for the request URI line to be presented [...]
Tomcat 文档（不是 Spring Boot）将其定义为该连接器在接受连接后等待请求 URI 行显示的毫秒数 [...]
To test the setting server.connection-timeout=4000I connect using netcatand I don't send any HTTP request/headers. I get:
为了测试server.connection-timeout=4000我使用的连接设置netcat，我不发送任何 HTTP 请求/标头。我得到：
$ time nc -vv localhost 1234
Connection to localhost 1234 port [tcp/*] succeeded!
real 0m4.015s
user 0m0.000s
sys 0m0.000s
Alternatives
备择方案
1) Async
1) 异步
From brightinventions.pl - Spring MVC Thread Pool Timeouts:
从Brightinventions.pl - Spring MVC 线程池超时：
In Spring MVC there is no way to configure a timeout unless you use async method. With async method one can use spring.mvc.async.request-timeout= to set amount of time (in milliseconds) before asynchronous request handling times out.
在 Spring MVC 中，除非您使用异步方法，否则无法配置超时。使用异步方法，可以使用 spring.mvc.async.request-timeout= 设置异步请求处理超时之前的时间量（以毫秒为单位）。
I've set spring.mvc.async.request-timeout=4000and I get a timeout in the browser with this:
我已经设置spring.mvc.async.request-timeout=4000并在浏览器中超时：
@GetMapping("/test-async")
public Callable<String> getFoobar() {
return () -> {
Thread.sleep(12000); //this will cause a timeout
return "foobar";
};
}
See Spring Boot REST API - request timeout?
请参阅Spring Boot REST API - 请求超时？
2) Servlet filter
2) Servlet 过滤器
Another solution would be to use a servlet filter brightinventions.pl - Request timeouts in Spring MVC(Kotlin):
另一种解决方案是使用 servlet 过滤器Brightinventions.pl - Spring MVC(Kotlin) 中的请求超时：
override fun doFilterInternal(request: HttpServletRequest, response: HttpServletResponse, filterChain: FilterChain) {
val completed = AtomicBoolean(false)
val requestHandlingThread = Thread.currentThread()
val timeout = timeoutsPool.schedule({
if (completed.compareAndSet(false, true)) {
requestHandlingThread.interrupt()
}
}, 5, TimeUnit.SECONDS)
try {
filterChain.doFilter(request, response)
timeout.cancel(false)
} finally {
completed.set(true)
}
}
3) Tomcat Stuck Thread Detection Valve?
3）Tomcat卡住线程检测阀？
Tomcat has a Stuck Thread Detection Valvebut I don't know if this can be configured programmatically using Spring Boot.
Tomcat 有一个Stuck Thread Detection Valve，但我不知道是否可以使用 Spring Boot 以编程方式配置它。
回答by Pankaj Singhal
From the official docs:
来自官方文档：
server.connection-timeout= # Time that connectors wait for another HTTP request before closing the connection. When not set, the connector's container-specific default is used. Use a value of -1 to indicate no (that is, an infinite) timeout.
server.connection-timeout = # 连接器在关闭连接之前等待另一个 HTTP 请求的时间。如果未设置，则使用连接器特定于容器的默认值。使用值 -1 表示没有（即无限）超时。
Another ref, also mentions the same. It should work for you.
另一个ref也提到了相同的内容。它应该适合你。
回答by user207421
When I call the endpoint, the request never times out, it just hangs indefinitely.
当我调用端点时，请求永远不会超时，它只是无限期挂起。
server.connection-timeoutisn't a request timeout. It is a timeout for idle connections, i.e. those that have already had a request/response pair and on which the server is now awaiting a second request. It is essentially a server-side read timeout.
server.connection-timeout不是请求超时。这是空闲连接的超时，即那些已经有请求/响应对并且服务器现在正在等待第二个请求的连接。它本质上是服务器端读取超时。
