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<title>Network/Wai/Middleware/Vhost.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE OverloadedStrings #-}</span>
<a name="line-2"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Wai</span><span class='hs-varop'>.</span><span class='hs-conid'>Middleware</span><span class='hs-varop'>.</span><span class='hs-conid'>Vhost</span> <span class='hs-layout'>(</span><span class='hs-varid'>vhost</span><span class='hs-layout'>,</span> <span class='hs-varid'>redirectWWW</span><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-3"></a>
<a name="line-4"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>Wai</span>
<a name="line-5"></a>
<a name="line-6"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Network</span><span class='hs-varop'>.</span><span class='hs-conid'>HTTP</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>H</span>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Encoding</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>TE</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Text</span> <span class='hs-layout'>(</span><span class='hs-conid'>Text</span><span class='hs-layout'>)</span>
<a name="line-9"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BS</span>
<a name="line-10"></a>
<a name="line-11"></a><a name="vhost"></a><span class='hs-definition'>vhost</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>Request</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>,</span> <span class='hs-conid'>Application</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Application</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Application</span>
<a name="line-12"></a><span class='hs-definition'>vhost</span> <span class='hs-varid'>vhosts</span> <span class='hs-varid'>def</span> <span class='hs-varid'>req</span> <span class='hs-keyglyph'>=</span>
<a name="line-13"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>b</span> <span class='hs-varid'>req</span><span class='hs-layout'>)</span> <span class='hs-varid'>vhosts</span> <span class='hs-keyword'>of</span>
<a name="line-14"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>def</span> <span class='hs-varid'>req</span>
<a name="line-15"></a> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-varid'>app</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>app</span> <span class='hs-varid'>req</span>
<a name="line-16"></a>
<a name="line-17"></a><a name="redirectWWW"></a><span class='hs-definition'>redirectWWW</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Text</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Application</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Application</span> <span class='hs-comment'>-- W.MiddleWare</span>
<a name="line-18"></a><span class='hs-definition'>redirectWWW</span> <span class='hs-varid'>home</span> <span class='hs-varid'>app</span> <span class='hs-varid'>req</span> <span class='hs-keyglyph'>=</span>
<a name="line-19"></a> <span class='hs-keyword'>if</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>isPrefixOf</span> <span class='hs-str'>"www"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>serverName</span> <span class='hs-varid'>req</span>
<a name="line-20"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>responseLBS</span> <span class='hs-conid'>H</span><span class='hs-varop'>.</span><span class='hs-varid'>status301</span>
<a name="line-21"></a> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-str'>"Content-Type"</span><span class='hs-layout'>,</span> <span class='hs-str'>"text/plain"</span><span class='hs-layout'>)</span> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-str'>"Location"</span><span class='hs-layout'>,</span> <span class='hs-conid'>TE</span><span class='hs-varop'>.</span><span class='hs-varid'>encodeUtf8</span> <span class='hs-varid'>home</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span> <span class='hs-str'>"Redirect"</span>
<a name="line-22"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>app</span> <span class='hs-varid'>req</span>
<a name="line-23"></a>
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