mirror of https://github.com/vapor/docs.git
521 lines
22 KiB
HTML
521 lines
22 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Vapor Documentation</title>
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<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Source+Code+Pro">
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<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Quicksand:400,700,300">
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<link rel="stylesheet" href="/1.5/styles/vapor-code.css">
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<link rel="stylesheet" href="/1.5/styles/main.css">
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</head>
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<body>
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<header>
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<a class="logo" href="/1.5/">
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<img src="/1.5/images/droplet.svg" alt="Vapor">
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<h1>Vapor <em>Docs</em></h1>
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</a>
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<ul>
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<li>
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<a href="http://vapor.codes">Home</a>
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</li>
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<li>
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<a href="http://example.vapor.codes">Example</a>
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</li>
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<li>
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<a href="https://github.com/vapor/vapor">GitHub</a>
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</li>
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<li>
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<a href="https://twitter.com/@codevapor">Twitter</a>
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</li>
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<li>
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<a href="http://vapor.team">Slack</a>
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</li>
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</ul>
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</header>
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<nav>
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<a href="#" class="toggle show">☰</a>
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<a href="#" class="toggle close">×</a>
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<div class="scroll">
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<section>
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<h3>Getting Started</h3>
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<ul>
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<li class="">
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<a href="/1.5/getting-started/install-swift-3-macos.html">
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Install Swift 3: macOS
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</a>
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</li>
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<li class="">
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<a href="/1.5/getting-started/install-swift-3-ubuntu.html">
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Install Swift 3: Ubuntu
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</a>
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</li>
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<li class="">
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<a href="/1.5/getting-started/install-toolbox.html">
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Install Toolbox
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</a>
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</li>
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<li class="">
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<a href="/1.5/getting-started/hello-world.html">
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Hello, World
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</a>
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</li>
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<li class="">
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<a href="/1.5/getting-started/manual.html">
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Manual
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</a>
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</li>
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<li class="">
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<a href="/1.5/getting-started/xcode.html">
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Xcode
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Guide</h3>
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<ul>
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<li class="">
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<a href="/1.5/guide/droplet.html">
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Droplet
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/folder-structure.html">
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Folder Structure
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/json.html">
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JSON
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/config.html">
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Config
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/views.html">
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Views
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/leaf.html">
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Leaf
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/controllers.html">
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Controllers
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/middleware.html">
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Middleware
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/validation.html">
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Validation
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/provider.html">
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Provider
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/sessions.html">
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Sessions
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/hash.html">
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Hash
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</a>
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</li>
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<li class="">
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<a href="/1.5/guide/commands.html">
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Commands
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Routing</h3>
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<ul>
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<li class="">
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<a href="/1.5/routing/basic.html">
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Basic
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</a>
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</li>
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<li class="">
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<a href="/1.5/routing/parameters.html">
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Route Parameters
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</a>
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</li>
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<li class="">
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<a href="/1.5/routing/query-parameters.html">
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Query Parameters
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</a>
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</li>
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<li class="">
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<a href="/1.5/routing/group.html">
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Group
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</a>
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</li>
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<li class="">
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<a href="/1.5/routing/collection.html">
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Collection
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Fluent</h3>
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<ul>
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<li class="">
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<a href="/1.5/fluent/driver.html">
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Driver
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</a>
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</li>
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<li class="">
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<a href="/1.5/fluent/model.html">
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Model
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</a>
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</li>
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<li class="">
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<a href="/1.5/fluent/query.html">
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Query
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</a>
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</li>
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<li class="">
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<a href="/1.5/fluent/relation.html">
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Relation
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Auth</h3>
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<ul>
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<li class="">
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<a href="/1.5/auth/user.html">
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User
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</a>
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</li>
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<li class="">
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<a href="/1.5/auth/middleware.html">
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Middleware
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</a>
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</li>
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<li class="">
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<a href="/1.5/auth/request.html">
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Request
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</a>
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</li>
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<li class="">
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<a href="/1.5/auth/protect.html">
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Protect
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>HTTP</h3>
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<ul>
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<li class="">
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<a href="/1.5/http/request.html">
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Request
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/response.html">
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Response
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/body.html">
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Body
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/response-representable.html">
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ResponseRepresentable
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</a>
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</li>
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<li class="active">
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<a href="/1.5/http/responder.html">
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Responder
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/client.html">
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Client
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/server.html">
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Server
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</a>
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</li>
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<li class="">
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<a href="/1.5/http/cors.html">
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CORS
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>WebSockets</h3>
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<ul>
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<li class="">
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<a href="/1.5/websockets/droplet.html">
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Droplet
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</a>
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</li>
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<li class="">
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<a href="/1.5/websockets/custom.html">
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Custom
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Testing</h3>
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<ul>
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<li class="">
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<a href="/1.5/testing/modules.html">
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Modules
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</a>
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</li>
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<li class="">
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<a href="/1.5/testing/basic.html">
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Basic
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Deploy</h3>
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<ul>
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<li class="">
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<a href="/1.5/deploy/nginx.html">
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Nginx
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</a>
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</li>
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<li class="">
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<a href="/1.5/deploy/supervisor.html">
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Supervisor
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</a>
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</li>
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</ul>
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</section>
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<section>
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<h3>Version (1.5)</h3>
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<ul>
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<li class="">
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<a href="/1.5/switch/1_5.html">
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1.5
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</a>
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</li>
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<li class="">
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<a href="/1.5/switch/2_0.html">
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2.0
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</a>
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</li>
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</ul>
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</section>
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</div>
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</nav>
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<main>
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<a href="https://github.com/vapor/documentation/blob/master/CONTRIBUTING.md" class="edit">✎ Edit on GitHub</a>
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<blockquote>
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<p>Module: <code>import HTTP</code></p>
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</blockquote>
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<h1 id="responder">Responder</h1>
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<p>The <code>Responder</code> is a simple protocol defining the behavior of objects that can accept a <code>Request</code> and return a <code>Response</code>. Most notably in Vapor, it is the core API endpoint that connects the <code>Droplet</code> to the <code>Server</code>. Let's look at the definition:</p>
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<pre><code class="language-swift">public protocol Responder {
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func respond(to request: Request) throws -> Response
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}</code></pre>
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<blockquote>
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<p>The responder protocol is most notably related to Droplet and it's relationship with a server. Average users will not likely interact with it much.</p>
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</blockquote>
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<h2 id="simple">Simple</h2>
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<p>Of course, Vapor provides some conveniences for this, and in practice, we will often call:</p>
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<pre><code class="language-swift">try drop.run()</code></pre>
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<h2 id="manual">Manual</h2>
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<p>As we just mentioned, the Vapor <code>Droplet</code> itself conforms to <code>Responder</code>, connecting it to the <code>Server</code>. This means if we wanted to serve our droplet manually, we could do:</p>
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<pre><code class="language-swift">let server = try Server<TCPServerStream, Parser<Request>, Serializer<Response>>(port: port)
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try server.start(responder: droplet) { error in
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print("Got error: \(error)")
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}</code></pre>
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<h2 id="advanced">Advanced</h2>
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<p>We can conform our own objects to <code>Responder</code> and pass them to <code>Servers</code>. Let's look at an example:</p>
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<pre><code class="language-swift">final class Responder: HTTP.Responder {
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func respond(to request: Request) throws -> Response {
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let body = "Hello World".makeBody()
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return Response(body: body)
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}
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}</code></pre>
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<p>This only returns <code>"Hello World"</code> for every request, it's most commonly going to be linked with a router of some type.</p>
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<pre><code class="language-swift">final class Responder: HTTP.Responder {
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let router: Router = ...
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func respond(to request: Request) throws -> Response {
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return try router.route(request)
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}
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}</code></pre>
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<p>We'll then pass this responder to a server and let it go.</p>
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<pre><code class="language-swift">let server = try Server<TCPServerStream, Parser<Request>, Serializer<Response>>(port: port)
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print("visit http://localhost:\(port)/")
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try server.start(responder: Responder()) { error in
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print("Got error: \(error)")
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}</code></pre>
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<p>This can be used as a jumping off point for applications looking to implement features manually.</p>
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<h2 id="client">Client</h2>
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<p>The <code>HTTP.Client</code> is itself a <code>Responder</code> although, instead of handling the <code>Request</code> itself, it passes it on to the underlying URI. </p>
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</main>
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<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
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<script src="/1.5/scripts/highlight.pack.js"></script>
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