@loopback/docs

--- lang: en title: 'API docs: rest.httphandler' keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI sidebar: lb4_sidebar editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/rest permalink: /doc/en/lb4/apidocs.rest.httphandler.html ---  [Home](./index.md) > [@loopback/rest](./rest.md) > [HttpHandler](./rest.httphandler.md) ## HttpHandler class **Signature:** ```typescript export declare class HttpHandler ``` ## Constructors <table><thead><tr><th> Constructor </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [(constructor)(\_rootContext, \_serverConfig, \_routes)](./rest.httphandler._constructor_.md) </td><td markdown="1"> </td><td markdown="1"> Constructs a new instance of the `HttpHandler` class </td></tr> </tbody></table> ## Properties <table><thead><tr><th> Property </th><th> Modifiers </th><th> Type </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [\_openApiComponents](./rest.httphandler._openapicomponents.md) </td><td markdown="1"> `protected` </td><td markdown="1"> ComponentsObject </td><td markdown="1"> Shared OpenAPI spec objects as `components` </td></tr> <tr><td markdown="1"> [\_rootContext](./rest.httphandler._rootcontext.md) </td><td markdown="1"> `protected` `readonly` </td><td markdown="1"> [Context](./context.context.md) </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [\_routes](./rest.httphandler._routes.md) </td><td markdown="1"> `protected` `readonly` </td><td markdown="1"> [RoutingTable](./rest.routingtable.md) </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [\_serverConfig](./rest.httphandler._serverconfig.md) </td><td markdown="1"> `protected` `readonly` </td><td markdown="1"> [RestServerResolvedConfig](./rest.restserverresolvedconfig.md) </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [handleRequest](./rest.httphandler.handlerequest.md) </td><td markdown="1"> </td><td markdown="1"> (request: Request, response: Response) => Promise<void> </td><td markdown="1"> </td></tr> </tbody></table> ## Methods <table><thead><tr><th> Method </th><th> Modifiers </th><th> Description </th></tr></thead> <tbody><tr><td markdown="1"> [\_handleRequest(request, response)](./rest.httphandler._handlerequest.md) </td><td markdown="1"> `protected` </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [describeApiPaths()](./rest.httphandler.describeapipaths.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [findRoute(request)](./rest.httphandler.findroute.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [getApiComponents()](./rest.httphandler.getapicomponents.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [getApiDefinitions()](./rest.httphandler.getapidefinitions.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [registerApiComponents(defs)](./rest.httphandler.registerapicomponents.md) </td><td markdown="1"> </td><td markdown="1"> Merge components into the OpenApi spec </td></tr> <tr><td markdown="1"> [registerApiDefinitions(defs)](./rest.httphandler.registerapidefinitions.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [registerController(spec, controllerCtor, controllerFactory)](./rest.httphandler.registercontroller.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> <tr><td markdown="1"> [registerRoute(route)](./rest.httphandler.registerroute.md) </td><td markdown="1"> </td><td markdown="1"> </td></tr> </tbody></table>