Edgecast HTTP Large Administration Guide Disclaimer Care was taken in the creation of this guide. However, Edgecast cannot accept any responsibility for errors or omissions. There are no warranties, expressed or implied, including the warranty of merchantability or fitness for a particular purpose, accompanying this product. Trademark Information EDGECAST is a registered trademark of Verizon Digital Media Services Inc. WINDOWS and SILVERLIGHT are registered trademarks of Microsoft Corporation. About This Guide HTTP Large Administration Guide Version 5.30 8/28/2021 ©2021 Verizon Media. All rights reserved. Table of Contents Data Delivery Platforms ................................................................................................................................ 1 Introduction .............................................................................................................................................. 1 Choosing an HTTP Platform ...................................................................................................................... 2 HTTP Large Platform ..................................................................................................................................... 3 How Does It Work? ................................................................................................................................... 3 Indicating Where Your Content Can Be Found ......................................................................................... 5 Accessing Your Content ............................................................................................................................ 6 CDN URL ................................................................................................................................................ 7 Edge CNAME URL .................................................................................................................................. 9 How Requests are Handled ..................................................................................................................... 10 Phase 1: Request ................................................................................................................................. 10 Phase 2: Security ................................................................................................................................. 10 Phase 3: Check for Cached Content .................................................................................................... 12 Phase 4: Retrieval, Delivery, and Caching ........................................................................................... 14 Common HTTP Status Codes ............................................................................................................... 15 Configuring an Origin Server ....................................................................................................................... 16 Overview ................................................................................................................................................. 16 Customer Origin Server ........................................................................................................................... 17 Origin Configuration ............................................................................................................................ 18 Directory Name ................................................................................................................................... 18 Domain – IP Address Configuration .................................................................................................... 19 HTTP Host Header ............................................................................................................................... 21 Load Balancing .................................................................................................................................... 21 Origin Shield ........................................................................................................................................ 22 Customer Origin Management ........................................................................................................... 24 Response Headers ............................................................................................................................... 27 Table of Contents Edgecast Page i Firewall Access .................................................................................................................................... 27 Best Practices (Dynamic Application) ................................................................................................. 27 CDN Origin Servers .................................................................................................................................. 28 Masking the URL of a CDN Origin Server (CNAME)................................................................................. 29 Setting up DNS for an Edge CNAME Deactivation .................................................................................. 31 Edge CNAME Deactivation .................................................................................................................. 31 Securing Your Content ................................................................................................................................ 32 Overview ................................................................................................................................................. 32 Secure HTTP Requests (HTTPS) ............................................................................................................... 32 Certificate Provisioning System .......................................................................................................... 32 Legacy HTTPS ...................................................................................................................................... 39 Token-Based Authentication .................................................................................................................. 41 Country Filtering ..................................................................................................................................... 41 Administering Country Filtering Configurations ................................................................................. 42 Protecting Assets Using Both Country Filtering and Token-Based Authentication ............................ 45 Cache Management .................................................................................................................................... 46 Default Cache Management ................................................................................................................... 46 Caching & Incomplete Downloads (Complete Cache Fill) ................................................................... 47 Loading Assets ......................................................................................................................................... 47 Automatically Loading Assets through the Web Services REST API ................................................... 49 Purging Assets ......................................................................................................................................... 50 Automated Purging Through the Web Services REST API .................................................................. 50 Manually Purging Assets ..................................................................................................................... 51 Purge and Load History ........................................................................................................................... 56 Query String Caching ............................................................................................................................... 57 Query String Logging ........................................................................................................................... 58 Asset Compression .................................................................................................................................. 58 Customer Origin Server Compression ................................................................................................. 58 Edge Server Compression ................................................................................................................... 62 Overwriting Cache Headers .................................................................................................................... 64 Bandwidth Throttling .................................................................................................................................. 65 Overview ................................................................................................................................................. 65 Table of Contents Edgecast Page ii Configuring Bandwidth Throttling .......................................................................................................... 65 HTTP Streaming Solutions ........................................................................................................................... 67 Overview ................................................................................................................................................