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<title>class Rack::Handler::WEBrick - rack-2.2.22 Documentation</title>

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 <div id="parent-class-section" class="nav-section">
 <h3>Parent</h3>

WEBrick::HTTPServlet::AbstractServlet
 
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 <h3>Methods</h3>

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 <li class="calls-super" ><a href="#method-c-new">::new</a>
 
 <li ><a href="#method-c-run">::run</a>
 
 <li ><a href="#method-c-shutdown">::shutdown</a>
 
 <li ><a href="#method-c-valid_options">::valid_options</a>
 
 <li ><a href="#method-i-service">#service</a>
 
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 <h1 id="class-Rack::Handler::WEBrick" class="class">
 class Rack::Handler::WEBrick
 </h1>

<section id="public-class-5Buntitled-5D-method-details" class="method-section">
 <header>
 <h3>Public Class Methods</h3>
 </header>

<div id="method-c-new" class="method-detail ">
 
 <div class="method-heading">
 new(server, app)
 
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 </div>

<div class="method-description">
 
 
 
 
 <div class="method-calls-super">
 Calls superclass method
 
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<div class="method-source-code" id="new-source">
 <pre># File lib/rack/handler/webrick.rb, line 61
def initialize(server, app)
 super server
 @app = app
end</pre>
 </div>
 
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<div id="method-c-run" class="method-detail ">
 
 <div class="method-heading">
 run(app, **options) { |server| ... }
 
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<div class="method-source-code" id="run-source">
 <pre># File lib/rack/handler/webrick.rb, line 26
def self.run(app, **options)
 environment = ENV[&#39;RACK_ENV&#39;] || &#39;development&#39;
 default_host = environment == &#39;development&#39; ? &#39;localhost&#39; : nil

if !options[:BindAddress] || options[:Host]
 options[:BindAddress] = options.delete(:Host) || default_host
 end
 options[:Port] ||= 8080
 if options[:SSLEnable]
 require &#39;webrick/https&#39;
 end

@server = ::WEBrick::HTTPServer.new(options)
 @server.mount &quot;/&quot;, Rack::Handler::WEBrick, app
 yield @server if block_given?
 @server.start
end</pre>
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<div id="method-c-shutdown" class="method-detail ">
 
 <div class="method-heading">
 shutdown()
 
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<div class="method-source-code" id="shutdown-source">
 <pre># File lib/rack/handler/webrick.rb, line 54
def self.shutdown
 if @server
 @server.shutdown
 @server = nil
 end
end</pre>
 </div>
 
 </div>

</div>

<div id="method-c-valid_options" class="method-detail ">
 
 <div class="method-heading">
 valid_options()
 
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<div class="method-source-code" id="valid_options-source">
 <pre># File lib/rack/handler/webrick.rb, line 44
def self.valid_options
 environment = ENV[&#39;RACK_ENV&#39;] || &#39;development&#39;
 default_host = environment == &#39;development&#39; ? &#39;localhost&#39; : &#39;0.0.0.0&#39;

{
 &quot;Host=HOST&quot; =&gt; &quot;Hostname to listen on (default: #{default_host})&quot;,
 &quot;Port=PORT&quot; =&gt; &quot;Port to listen on (default: 8080)&quot;,
 }
end</pre>
 </div>
 
 </div>

</div>

</section>
 
 <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
 <header>
 <h3>Public Instance Methods</h3>
 </header>

<div id="method-i-service" class="method-detail ">
 
 <div class="method-heading">
 service(req, res)
 
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 </div>

<div class="method-source-code" id="service-source">
 <pre># File lib/rack/handler/webrick.rb, line 66
def service(req, res)
 res.rack = true
 env = req.meta_vars
 env.delete_if { |k, v| v.nil? }

rack_input = StringIO.new(req.body.to_s)
 rack_input.set_encoding(Encoding::BINARY)

env.update(
 RACK_VERSION =&gt; Rack::VERSION,
 RACK_INPUT =&gt; rack_input,
 RACK_ERRORS =&gt; $stderr,
 RACK_MULTITHREAD =&gt; true,
 RACK_MULTIPROCESS =&gt; false,
 RACK_RUNONCE =&gt; false,
 RACK_URL_SCHEME =&gt; [&quot;yes&quot;, &quot;on&quot;, &quot;1&quot;].include?(env[HTTPS]) ? &quot;https&quot; : &quot;http&quot;,
 RACK_IS_HIJACK =&gt; true,
 RACK_HIJACK =&gt; lambda { raise NotImplementedError, &quot;only partial hijack is supported.&quot;},
 RACK_HIJACK_IO =&gt; nil
 )

env[HTTP_VERSION] ||= env[SERVER_PROTOCOL]
 env[QUERY_STRING] ||= &quot;&quot;
 unless env[PATH_INFO] == &quot;&quot;
 path, n = req.request_uri.path, env[SCRIPT_NAME].length
 env[PATH_INFO] = path[n, path.length - n]
 end
 env[REQUEST_PATH] ||= [env[SCRIPT_NAME], env[PATH_INFO]].join

status, headers, body = @app.call(env)
 begin
 res.status = status.to_i
 io_lambda = nil
 headers.each { |k, vs|
 if k == RACK_HIJACK
 io_lambda = vs
 elsif k.downcase == &quot;set-cookie&quot;
 res.cookies.concat vs.split(&quot;\n&quot;)
 else
 # Since WEBrick won&#39;t accept repeated headers,
 # merge the values per RFC 1945 section 4.2.
 res[k] = vs.split(&quot;\n&quot;).join(&quot;, &quot;)
 end
 }

if io_lambda
 rd, wr = IO.pipe
 res.body = rd
 res.chunked = true
 io_lambda.call wr
 elsif body.respond_to?(:to_path)
 res.body = ::File.open(body.to_path, &#39;rb&#39;)
 else
 body.each { |part|
 res.body &lt;&lt; part
 }
 end
 ensure
 body.close if body.respond_to? :close
 end
end</pre>
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