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服务器保持大量TIME_WAIT和CLOSE_WAIT的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...时间,但是有这么多状态要维护总是不好。 HTTP协议1.1规定default行为是Keep-Alive,也就是会重用TCP连接传输多个 request/response,一个主要原因就是发现了这个问题。 也就是说HTTP的交互跟上面画的那个图是不一样的,关闭连...
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Keystore type: which one to use?

...urther reading: Mind Your Keys? A Security Evaluation of Java Keystores (PDF) Java KeyStores – the gory details share | improve this answer | follow | ...
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What is an efficient way to implement a singleton pattern in Java? [closed]

... video. Also see slides 30-32 of his presentation (effective_java_reloaded.pdf): The Right Way to Implement a Serializable Singleton public enum Elvis { INSTANCE; private final String[] favoriteSongs = { "Hound Dog", "Heartbreak Hotel" }; public void printFavorites() { ...
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What is the http-header “X-XSS-Protection”?

...understood-x-xss-protection/ http://p42.us/ie8xss/Abusing_IE8s_XSS_Filters.pdf https://www.slideshare.net/masatokinugawa/xxn-en https://bugs.chromium.org/p/chromium/issues/detail?id=396544 https://bugs.chromium.org/p/chromium/issues/detail?id=498982 ...
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Setting PayPal return URL and making it auto return?

...umentation for IPN is here: https://www.x.com/sites/default/files/ipnguide.pdf Online Documentation for IPN: https://developer.paypal.com/docs/classic/ipn/gs_IPN/ The general procedure is that you pass a notify_url parameter with the request, and set up a page which handles and validates IPN notif...
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What does “default” mean after a class' function declaration?

...tandard draft https://github.com/cplusplus/draft/blob/master/papers/n4659.pdf 11.4.2 "Explicitly-defaulted functions": 1 A function definition of the form: attribute-specifier-seq opt decl-specifier-seq opt declarator virt-specifier-seq opt = default ; is called an explicitly-defaulted d...
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How does `is_base_of` work?

...n get a draft for free: open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1804.pdf – sellibitze May 26 '10 at 13:16 ...
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Detect network connection type on Android

...: http://dl.google.com/io/2009/pres/W_0300_CodingforLife-BatteryLifeThatIs.pdf ConnectivityManager mConnectivity = null; TelephonyManager mTelephony = null; // Skip if no connection, or background data disabled NetworkInfo info = mConnectivity.getActiveNetworkInfo(); if (info == null || !mConnectiv...
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Why is NaN not equal to NaN? [duplicate]

..."undefined" - see http://www.cs.berkeley.edu/~wkahan/ieee754status/IEEE754.PDF, page 7 (search for the word "undefined"). As that document confirms, NaN is a well-defined concept. Furthermore, IEEE approach was to follow the regular mathematics rules as much as possible, and when they couldn't, fol...
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How do I associate file types with an iPhone application?

....apple.nspboard-typ</string> <string>com.adobe.pdf</string> <string>com.adobe.postscript</string> <string>com.adobe.encapsulated-​postscript</string> <string>com.adobe.photoshop-​image...