iOS_防截屏_基于DRM隐藏敏感信息

Overview ======== [](https://travis-ci.org/swisspol/GCDWebServer) [](https://cocoapods.org/pods/GCDWebServer) [](https://github.com/swisspol/GCDWebServer) [](LICENSE) GCDWebServer is a modern and lightweight GCD based HTTP 1.1 server designed to be embedded in iOS, macOS & tvOS apps. It was written from scratch with the following goals in mind: * Elegant and easy to use architecture with only 4 core classes: server, connection, request and response (see "Understanding GCDWebServer's Architecture" below) * Well designed API with fully documented headers for easy integration and customization * Entirely built with an event-driven design using [Grand Central Dispatch](http://en.wikipedia.org/wiki/Grand_Central_Dispatch) for best performance and concurrency * No dependencies on third-party source code * Available under a friendly [New BSD License](LICENSE) Extra built-in features: * Allow implementation of fully asynchronous handlers of incoming HTTP requests * Minimize memory usage with disk streaming of large HTTP request or response bodies * Parser for [web forms](http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4) submitted using "application/x-www-form-urlencoded" or "multipart/form-data" encodings (including file uploads) * [JSON](http://www.json.org/) parsing and serialization for request and response HTTP bodies * [Chunked transfer encoding](https://en.wikipedia.org/wiki/Chunked_transfer_encoding) for request and response HTTP bodies * [HTTP compression](https://en.wikipedia.org/wiki/HTTP_compression) with gzip for request and response HTTP bodies * [HTTP range](https://en.wikipedia.org/wiki/Byte_serving) support for requests of local files * [Basic](https://en.wikipedia.org/wiki/Basic_access_authentication) and [Digest Access](https://en.wikipedia.org/wiki/Digest_access_authentication) authentications for password protection * Automatically handle transitions between foreground, background and suspended modes in iOS apps * Full support for both IPv4 and IPv6 * NAT port mapping (IPv4 only) Included extensions: * [GCDWebUploader](GCDWebUploader/GCDWebUploader.h): subclass of ```GCDWebServer``` that implements an interface for uploading and downloading files using a web browser * [GCDWebDAVServer](GCDWebDAVServer/GCDWebDAVServer.h): subclass of ```GCDWebServer``` that implements a class 1 [WebDAV](https://en.wikipedia.org/wiki/WebDAV) server (with partial class 2 support for macOS Finder) What's not supported (but not really required from an embedded HTTP server): * Keep-alive connections * HTTPS Requirements: * macOS 10.7 or later (x86_64) * iOS 8.0 or later (armv7, armv7s or arm64) * tvOS 9.0 or later (arm64) * ARC memory management only (if you need MRC support use GCDWebServer 3.1 or earlier) Getting Started =============== Download or check out the [latest release](https://github.com/swisspol/GCDWebServer/releases) of GCDWebServer then add the entire "GCDWebServer" subfolder to your Xcode project. If you intend to use one of the extensions like GCDWebDAVServer or GCDWebUploader, add these subfolders as well. Finally link to `libz` (via Target > Build Phases > Link Binary With Libraries) and add `$(SDKROOT)/usr/include/libxml2` to your header search paths (via Target > Build Settings > HEADER_SEARCH_PATHS). Alternatively, you can install GCDWebServer using [CocoaPods](http://cocoapods.org/) by simply adding this line to your Podfile: ``` pod "GCDWebServer", "~> 3.0" ``` If you want to use GCDWebUploader, use this line instead: ``` pod "GCDWebServer/WebUploader", "~> 3.0" ``` Or this line for GCDWebDAVServer: ``` pod "GCDWebServer/WebDAV", "~> 3.0" ``` And finally run `$ pod install`. You can also use [Carthage](https://github.com/Carthage/Carthage) by adding this line to your Cartfile (3.2.5 is the first release with Carthage support): ``` github "swisspol/GCDWebServer" ~> 3.2.5 ``` Then run `$ carthage update` and add the generated frameworks to your Xcode projects (see [Carthage instructions](https://github.com/Carthage/Carthage#adding-frameworks-to-an-application)). Help & Support ============== For help with using GCDWebServer, it's best to ask your question on Stack Overflow with the [`gcdwebserver`](http://stackoverflow.com/questions/tagged/gcdwebserver) tag. For bug reports and enhancement requests you can use [issues](https://github.com/swisspol/GCDWebServer/issues) in this project. Be sure to read this entire README first though! Hello World =========== These code snippets show how to implement a custom HTTP server that runs on port 8080 and returns a "Hello World" HTML page to any request. Since GCDWebServer uses GCD blocks to handle requests, no subclassing or delegates are needed, which results in very clean code. **IMPORTANT:** If not using CocoaPods, be sure to add the `libz` shared system library to the Xcode target for your app. **macOS version (command line tool):** ```objectivec #import "GCDWebServer.h" #import "GCDWebServerDataResponse.h" int main(int argc, const char* argv[]) { @autoreleasepool { // Create server GCDWebServer* webServer = [[GCDWebServer alloc] init]; // Add a handler to respond to GET requests on any URL [webServer addDefaultHandlerForMethod:@"GET" requestClass:[GCDWebServerRequest class] processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) { return [GCDWebServerDataResponse responseWithHTML:@"<html><body><p>Hello World</p></body></html>"]; }]; // Use convenience method that runs server on port 8080 // until SIGINT (Ctrl-C in Terminal) or SIGTERM is received [webServer runWithPort:8080 bonjourName:nil]; NSLog(@"Visit %@ in your web browser", webServer.serverURL); } return 0; } ``` **iOS version:** ```objectivec #import "GCDWebServer.h" #import "GCDWebServerDataResponse.h" @interface AppDelegate : NSObject <UIApplicationDelegate> { GCDWebServer* _webServer; } @end @implementation AppDelegate - (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions { // Create server _webServer = [[GCDWebServer alloc] init]; // Add a handler to respond to GET requests on any URL [_webServer addDefaultHandlerForMethod:@"GET" requestClass:[GCDWebServerRequest class] processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) { return [GCDWebServerDataResponse responseWithHTML:@"<html><body><p>Hello World</p></body></html>"]; }]; // Start server on port 8080 [_webServer startWithPort:8080 bonjourName:nil]; NSLog(@"Visit %@ in your web browser", _webServer.serverURL); return YES; } @end ``` **macOS Swift version (command line tool):** ***webServer.swift*** ```swift import Foundation import GCDWebServer func initWebServer() { let webServer = GCDWebServer() webServer.addDefaultHandler(forMethod: "GET", request: GCDWebServerRequest.self, processBlock: {request in return GCDWebServerDataResponse(html:"<html><body><p>Hello World</p></body></html>") }) webServer.start(withPort: 8080, bonjourName: "GCD Web Server") print("Visit \(webServer.serverURL) in your web browser") } ``` ***WebServer-Bridging-Header.h*** ```objectivec #import <GCDWebServer/GCDWebServer.h> #import <GCDWebServer/GCDWebServerDataResponse.h> ``` Web Based Uploads in iOS Apps ============================= GCDWebUploader is a subclass of ```GCDWebServer``` that provides a ready-to-use HTML 5 file uploader & downloader. This lets users upload, download, delete files and create di