# Google Toolbox for Mac - Session Fetcher # **Project site**
**Discussion group** [![Build Status](https://travis-ci.org/google/gtm-session-fetcher.svg?branch=master)](https://travis-ci.org/google/gtm-session-fetcher) `GTMSessionFetcher` makes it easy for Cocoa applications to perform http operations. The fetcher is implemented as a wrapper on `NSURLSession`, so its behavior is asynchronous and uses operating-system settings on iOS and Mac OS X. Features include: - Simple to build; only one source/header file pair is required - Simple to use: takes just two lines of code to fetch a request - Supports upload and download sessions - Flexible cookie storage - Automatic retry on errors, with exponential backoff - Support for generating multipart MIME upload streams - Easy, convenient logging of http requests and responses - Supports plug-in authentication such as with GTMAppAuth - Easily testable; self-mocking - Automatic rate limiting when created by the `GTMSessionFetcherService` factory class - Fully independent of other projects