(Day10)GCDWebServer 進階功能

12th鐵人賽

Terry

團隊imac_ios_sr

2020-09-23 14:23:42

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異步響應HTTP請求

上面的例子是同步處理響應HTTP請求，GCDWebServer 3.0 起新增了異步處理HTTP請求，方便我們在響應中進行耗時的操作(如網路請求，I/O讀寫操作)。使用時只需將 processBlock 改成 asyncProcessBlock。

import UIKit
import GCDWebServer
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let webServer = GCDWebServer()
        
        webServer.addDefaultHandler(forMethod: "GET", request: GCDWebServerRequest.self, asyncProcessBlock: { (request, completionBlock) in
            
            DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 5, execute: {
                let html = "<html><body>Hello World</body></html>"
                
                let response = GCDWebServerDataResponse(html: html)
                completionBlock(response)
                
            })
        })
        
        webServer.start(withPort: 8080, bonjourName: "GCD Web Server")
    }
}

啟動會訪問網址時會5秒後才顯示網頁。

HTTP請求重定向

以下是從"/"到"/index.html"的頁面從定向

import UIKit
import GCDWebServer
class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let webServer = GCDWebServer()
        
        webServer.addDefaultHandler(forMethod: "GET", request: GCDWebServerRequest.self, processBlock: { (request) -> GCDWebServerResponse? in
            
            let html = "<html><body>歡迎訪問</body></html>"
            return GCDWebServerDataResponse(html: html)
        })
        
        webServer.addHandler(forMethod: "GET", path: "/", request: GCDWebServerRequest.self, processBlock: { (request) -> GCDWebServerResponse? in
            
            let url = URL(string: "index.html", relativeTo: request.url)
            
            return GCDWebServerResponse(redirect: url!, permanent: false)
        });
        
        webServer.start(withPort: 8080, bonjourName: "GCD Web Server")
        print("服务启动成功，使用你的浏览器访问：\(webServer.serverURL!)")
    }
}