http

• BaseRequestOptions
• BaseResponseOptions
• BrowserXhr
• Connection
• ConnectionBackend
• CookieXSRFStrategy
• Headers
• Http
• HttpModule
• JSONPBackend
• JSONPConnection
• Jsonp
• JsonpModule
• QueryEncoder
• ReadyState
• Request
• RequestMethod
• RequestOptions
• RequestOptionsArgs
• Response
• ResponseContentType
• ResponseOptions
• ResponseOptionsArgs
• ResponseType
• URLSearchParams
• XHRBackend
• XHRConnection
• XSRFStrategy

defined in @angular/http/index.ts