{
  "id": "api/common/http/HttpHandler",
  "title": "HttpHandler",
  "contents": "\n\n<article>\n  <div class=\"breadcrumb-container\">\n    <div class=\"breadcrumb\">\n      <script type=\"application/ld+json\">\n        {\n          \"@context\": \"http://schema.org\",\n          \"@type\": \"BreadcrumbList\",\n          \"itemListElement\": [\n            { \"@type\": \"ListItem\", \"position\": 1, \"item\": { \"@id\": \"https://angular.io//api\", \"name\": \"API\" } },\n            { \"@type\": \"ListItem\", \"position\": 2, \"item\": { \"@id\": \"https://angular.io/api/common\", \"name\": \"@angular/common\" } },\n            { \"@type\": \"ListItem\", \"position\": 3, \"item\": { \"@id\": \"https://angular.io/api/common/http\", \"name\": \"@angular/common/http\" } },\n            { \"@type\": \"ListItem\", \"position\": 4, \"item\": { \"@id\": \"https://angular.io/api/common/http/HttpHandler\", \"name\": \"HttpHandler\" } }\n          ]\n        }\n      </script>\n        <a href=\"/api\">API</a> > <a href=\"api/common\">@angular/common</a> > <a href=\"api/common/http\">@angular/common/http</a>\n    </div>\n    <div class=\"github-links\">\n  <a href=\"https://github.com/angular/angular/edit/master/packages/common/http/src/backend.ts?message=docs(common)%3A%20describe%20your%20change...#L12-L27\" aria-label=\"Suggest Edits\" title=\"Suggest Edits\"><i class=\"material-icons\" aria-hidden=\"true\" role=\"img\">mode_edit</i></a>\n  <a href=\"https://github.com/angular/angular/tree/12.0.0-next.7/packages/common/http/src/backend.ts#L12-L27\" aria-label=\"View Source\" title=\"View Source\"><i class=\"material-icons\" aria-hidden=\"true\" role=\"img\">code</i></a>\n</div>\n  </div>\n  \n  <header class=\"api-header\">\n    <h1 id=\"httphandler\">HttpHandler<a title=\"Link to this heading\" class=\"header-link\" aria-hidden=\"true\" href=\"api/common/http/HttpHandler#httphandler\"><i class=\"material-icons\">link</i></a></h1>\n    \n    <label class=\"api-type-label class\">class</label>\n    \n    \n    \n  </header>\n  \n  <aio-toc class=\"embedded\"></aio-toc>\n\n  <div class=\"api-body\">\n    \n  <section class=\"short-description\">\n    <p>Transforms an <code><a href=\"api/common/http/HttpRequest\" class=\"code-anchor\">HttpRequest</a></code> into a stream of <code><a href=\"api/common/http/HttpEvent\" class=\"code-anchor\">HttpEvent</a></code>s, one of which will likely be a\n<code><a href=\"api/common/http/HttpResponse\" class=\"code-anchor\">HttpResponse</a></code>.</p>\n\n    <p><a href=\"api/common/http/HttpHandler#description\">See more...</a></p>\n  </section>\n  \n  \n  \n  <section class=\"class-overview\">\n<code-example language=\"ts\" hidecopy=\"true\">\nabstract class <a href=\"api/common/http/HttpHandler\" class=\"code-anchor\">HttpHandler</a> {\n  <a class=\"code-anchor\" href=\"api/common/http/HttpHandler#handle\">abstract <span class=\"member-name\">handle</span>(req: HttpRequest&#x3C;any>): Observable&#x3C;HttpEvent&#x3C;any>></a>\n}\n</code-example>\n\n  \n  \n  <div class=\"descendants class\">\n    <h2 id=\"subclasses\">Subclasses<a title=\"Link to this heading\" class=\"header-link\" aria-hidden=\"true\" href=\"api/common/http/HttpHandler#subclasses\"><i class=\"material-icons\">link</i></a></h2>\n    \n\n<ul>\n  \n    <li>\n      <code><a href=\"api/common/http/HttpBackend\" class=\"code-anchor\">HttpBackend</a></code>\n      \n\n<ul>\n  \n    <li>\n      <code><a href=\"api/common/http/JsonpClientBackend\" class=\"code-anchor\">JsonpClientBackend</a></code>\n      \n\n\n    </li>\n  \n    <li>\n      <code><a href=\"api/common/http/HttpXhrBackend\" class=\"code-anchor\">HttpXhrBackend</a></code>\n      \n\n\n    </li>\n  \n</ul>\n\n\n    </li>\n  \n</ul>\n\n\n  </div>\n  \n\n</section>\n\n\n  \n\n  \n  \n<section class=\"description\">\n  <h2 id=\"description\">Description<a title=\"Link to this heading\" class=\"header-link\" aria-hidden=\"true\" href=\"api/common/http/HttpHandler#description\"><i class=\"material-icons\">link</i></a></h2>\n  <p><code><a href=\"api/common/http/HttpHandler\" class=\"code-anchor\">HttpHandler</a></code> is injectable. When injected, the handler instance dispatches requests to the\nfirst interceptor in the chain, which dispatches to the second, etc, eventually reaching the\n<code><a href=\"api/common/http/HttpBackend\" class=\"code-anchor\">HttpBackend</a></code>.</p>\n<p>In an <code><a href=\"api/common/http/HttpInterceptor\" class=\"code-anchor\">HttpInterceptor</a></code>, the <code><a href=\"api/common/http/HttpHandler\" class=\"code-anchor\">HttpHandler</a></code> parameter is the next interceptor in the chain.</p>\n\n  \n</section>\n\n  \n\n\n\n\n\n\n\n\n\n\n\n\n<section class=\"instance-methods\">\n  <h2 id=\"methods\">Methods<a title=\"Link to this heading\" class=\"header-link\" aria-hidden=\"true\" href=\"api/common/http/HttpHandler#methods\"><i class=\"material-icons\">link</i></a></h2>\n  \n    <a id=\"handle\"></a>\n<table class=\"is-full-width method-table instance-method\">\n  <thead><tr><th>\n    <div class=\"with-github-links\">\n    <h3 id=\"handle\">\n      handle()\n      \n    <a title=\"Link to this heading\" class=\"header-link\" aria-hidden=\"true\" href=\"api/common/http/HttpHandler#handle\"><i class=\"material-icons\">link</i></a></h3>\n    <div class=\"github-links\">\n  <a href=\"https://github.com/angular/angular/edit/master/packages/common/http/src/backend.ts?message=docs(common)%3A%20describe%20your%20change...#L26-L26\" aria-label=\"Suggest Edits\" title=\"Suggest Edits\"><i class=\"material-icons\" aria-hidden=\"true\" role=\"img\">mode_edit</i></a>\n  <a href=\"https://github.com/angular/angular/tree/12.0.0-next.7/packages/common/http/src/backend.ts#L26-L26\" aria-label=\"View Source\" title=\"View Source\"><i class=\"material-icons\" aria-hidden=\"true\" role=\"img\">code</i></a>\n</div>\n    </div>\n  </th></tr></thead>\n  <tbody>\n    \n  \n    <tr>\n      <td>\n        <div class=\"overload-info\">\n  \n\n  <code-example language=\"ts\" hidecopy=\"true\" class=\"no-box api-heading\">abstract <span class=\"member-name\">handle</span>(req: HttpRequest&#x3C;any>): Observable&#x3C;HttpEvent&#x3C;any>></code-example>\n\n  \n\n  <h6 class=\"no-anchor\" id=\"parameters\">Parameters</h6>\n  <table class=\"is-full-width list-table parameters-table instance-method-overload-parameters\">\n  <tbody>\n  \n    <tr class=\"instance-method-overload-parameter\">\n      <td class=\"param-name\">\n        <a id=\"\"></a>\n        <code>req</code>\n      </td>\n      <td class=\"param-type\"><code><a href=\"api/common/http/HttpRequest\" class=\"code-anchor\">HttpRequest</a><any></any></code></td>\n      <td class=\"param-description\">\n                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          \n      </td>\n    </tr>\n  </tbody>\n</table>\n\n  \n  <h6 class=\"no-anchor\" id=\"returns\">Returns</h6>\n  <p><code>Observable&#x3C;<a href=\"api/common/http/HttpEvent\" class=\"code-anchor\">HttpEvent</a>&#x3C;any>></code></p>\n\n  \n\n\n  \n\n  \n</div>\n      </td>\n    </tr>\n  \n\n  \n\n  \n    </tbody>\n</table>\n\n  \n</section>\n\n\n\n  \n\n\n  </div>\n</article>\n\n<!-- links to this doc:\n - api/common/http\n - api/common/http/HttpBackend\n - api/common/http/HttpClientModule\n - api/common/http/HttpContext\n - api/common/http/HttpInterceptor\n - api/common/http/HttpXhrBackend\n - api/common/http/JsonpClientBackend\n - api/common/http/JsonpInterceptor\n - guide/http\n-->\n<!-- links from this doc:\n - /api\n - api/common\n - api/common/http\n - api/common/http/HttpBackend\n - api/common/http/HttpEvent\n - api/common/http/HttpHandler#description\n - api/common/http/HttpHandler#handle\n - api/common/http/HttpHandler#httphandler\n - api/common/http/HttpHandler#methods\n - api/common/http/HttpHandler#subclasses\n - api/common/http/HttpInterceptor\n - api/common/http/HttpRequest\n - api/common/http/HttpResponse\n - api/common/http/HttpXhrBackend\n - api/common/http/JsonpClientBackend\n - https://github.com/angular/angular/edit/master/packages/common/http/src/backend.ts?message=docs(common)%3A%20describe%20your%20change...#L12-L27\n - https://github.com/angular/angular/edit/master/packages/common/http/src/backend.ts?message=docs(common)%3A%20describe%20your%20change...#L26-L26\n - https://github.com/angular/angular/tree/12.0.0-next.7/packages/common/http/src/backend.ts#L12-L27\n - https://github.com/angular/angular/tree/12.0.0-next.7/packages/common/http/src/backend.ts#L26-L26\n-->"
}