晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<h1>Servlet Engine</h1><h2 id="top">Table of Contents</h2><section class="toc"><section class="toc-row"><header>Servlet Engine</header><p>
<a href="#extAppName">Name</a> | <a href="#extAppAddress">Address</a> | <a href="#maxConns">Max Connections</a> | <a href="#pcKeepAliveTimeout">Connection Keepalive Timeout</a> | <a href="#env">Environment</a> | <a href="#initTimeout">Initial Request Timeout (secs)</a> | <a href="#retryTimeout">Retry Timeout (secs)</a> | <a href="#respBuffer">Response Buffering</a></p></section>
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<section><div class="helpitem"><article class="ls-helpitem"><div><header id="extAppName"><h3>Name<span class="ls-permlink"><a href="#extAppName"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>A unique name for this external application. You will refer to it by this name when you use it in other parts of the configuration.</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="extAppAddress"><h3>Address<span class="ls-permlink"><a href="#extAppAddress"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>A unique socket address used by the external application. IPv4/IPv6 sockets and Unix Domain Sockets (UDS) are supported. IPv4/IPv6 sockets can be used for communication over the network. UDS can only be used when the external application resides on the same machine as the server.</p> <h4>Syntax</h4><p>IPv4 or IPV6 address:port or UDS://path</p> <h4>Example</h4><div class="ls-example">127.0.0.1:5434<br/> UDS://tmp/lshttpd/php.sock.</div><h4>Tips</h4><p><span title="Security" class="ls-icon-security"></span> If the external application runs on the same machine, UDS is preferred. If you have to use an IPv4|IPV6 socket, set the IP address to <span class="val">localhost</span> or <span class="val">127.0.0.1</span>, so the external application is inaccessible from other machines.<br/> <span title="Performance" class="ls-icon-performance"></span> Unix Domain Sockets generally provide higher performance than IPv4 sockets.</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="maxConns"><h3>Max Connections<span class="ls-permlink"><a href="#maxConns"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies the maximum number of concurrent connections that can be established between the server and an external application. This setting controls how many requests can be processed concurrently by an external application, however, the real limit also depends on the external application itself. Setting this value higher will not help if the external application is not fast enough or cannot scale to a large number of concurrent requests.</p> <h4>Syntax</h4><p>Integer number</p> <h4>Tips</h4><p><span title="Performance" class="ls-icon-performance"></span> Setting a high value does not directly translate to higher performance. Setting the limit to a value that will not overload the external application will provide the best performance/throughput.</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="pcKeepAliveTimeout"><h3>Connection Keepalive Timeout<span class="ls-permlink"><a href="#pcKeepAliveTimeout"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies the maximum time in seconds to keep an idle persistent connection open.<br/><br/> When set to "-1", the connection will never timeout. When set to 0 or greater, the connection will be closed after this time in seconds has passed.</p> <h4>Syntax</h4><p>int</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="env"><h3>Environment<span class="ls-permlink"><a href="#env"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies extra environment variables for the external application.</p> <h4>Syntax</h4><p>Key=value. Multiple variables can be separated by "ENTER"</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="initTimeout"><h3>Initial Request Timeout (secs)<span class="ls-permlink"><a href="#initTimeout"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies the maximum time in seconds the server will wait for the external application to respond to the first request over a new established connection. If the server does not receive any data from the external application within this timeout limit, it will mark this connection as bad. This helps to identify communication problems with external applications as quickly as possible. If some requests take longer to process, increase this limit to avoid 503 error messages.</p> <h4>Syntax</h4><p>Integer number</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="retryTimeout"><h3>Retry Timeout (secs)<span class="ls-permlink"><a href="#retryTimeout"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies the period of time that the server waits before retrying an external application that had a prior communication problem.</p> <h4>Syntax</h4><p>Integer number</p> </article> </div>
<div class="helpitem"><article class="ls-helpitem"><div><header id="respBuffer"><h3>Response Buffering<span class="ls-permlink"><a href="#respBuffer"></a></span><span class="top"><a href="#top">⇑</a></span></h3></header></div><h4>Description</h4><p>Specifies whether to buffer responses received from external applications. If a "nph-" (Non-Parsed-Header) script is detected, buffering is turned off for responses with full HTTP headers.</p> <h4>Syntax</h4><p>Select from drop down list</p> </article> </div>
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