go的net/http中，client的timeout是否存在问题？

Question

typeClientstruct{
//Transportspecifiesthemechanismbywhichindividual
//HTTPrequestsaremade.
//Ifnil,DefaultTransportisused.
TransportRoundTripper
//CheckRedirectspecifiesthepolicyforhandlingredirects.
//IfCheckRedirectisnotnil,theclientcallsitbefore
//followinganHTTPredirect.Theargumentsreqandviaare
//theupcomingrequestandtherequestsmadealready,oldest
//first.IfCheckRedirectreturnsanerror,theClient'sGet
//methodreturnsboththepreviousResponseand
//CheckRedirect'serror(wrappedinaurl.Error)insteadof
//issuingtheRequestreq.
//
//IfCheckRedirectisnil,theClientusesitsdefaultpolicy,
//whichistostopafter10consecutiverequests.
CheckRedirectfunc(req*Request,via[]*Request)error
//Jarspecifiesthecookiejar.
//IfJarisnil,cookiesarenotsentinrequestsandignored
//inresponses.
JarCookieJar
//Timeoutspecifiesatimelimitforrequestsmadebythis
//Client.Thetimeoutincludesconnectiontime,any
//redirects,andreadingtheresponsebody.Thetimerremains
//runningafterGet,Head,Post,orDoreturnandwill
//interruptreadingoftheResponse.Body.
//
//ATimeoutofzeromeansnotimeout.
//
//TheClient'sTransportmustsupporttheCancelRequest
//methodorClientwillreturnerrorswhenattemptingtomake
//arequestwithGet,Head,Post,orDo.Client'sdefault
//Transport(DefaultTransport)supportsCancelRequest.
Timeouttime.Duration
}
以上是部分源码。之前有同学问，client的timeout存在问题，请问有其他人遇见了同样的问题么？

Answer 1

题主的问题很有些莫名其妙，只说有问题但没说明究竟什么问题……不过我还是尝试答一下吧。如果要说Timeout有什么问题，需要注意注释文档里的这句话。ATimeoutofzeromeansnotimeout.如果你要发送很多请求，这个默认特性会害死人，在网络有问题的时候它会造成Client生成的Request和Response对象以及相关goroutine得不到释放，逐渐就吃满内存导致程序挂掉。所以使用go的时候最好不要直接使用http.Get之类的函数，这些都是使用默认Client的，没有Timeout，如果非要用，那就把http.DefaultClient的Timeout设置上吧。最后，我还是预感题主要问的问题跟我说的其实不搭界，啊，题主快现身把你的题目写清楚吧~