Question

我正在设置webview，但我需要使用代理加载webview的内容。你们中的任何人都知道如何在NSURLRequest中实现代理？

例如：

    NSString *location=@"http://google.com";
    NSURL *url=[NSURL URLWithString:location];
    NSURLRequest *request=[NSURLRequest requestWithURL:url];
//    some code to set the proxy

    [self.myWebView loadRequest:request];

我真的很感谢你的帮助

Answer 1

查看iOS URL Loading System以及NSURLProtocol

您可以为NSURLRequest编写自定义NSURLProtocol类。自定义NSURLProtocol可以拦截您的请求并为每个请求添加代理。相关方法是-(void)startLoading，在这个方法中你可以使用Core-Function，它是iOS中的一个小级别的api，可以为每个请求添加代理：

//"request" is your NSURLRequest
NSURL *url = [request URL];
NSString *urlString = [url absoluteString];

CFStringRef urlStringRef = (CFStringRef) urlString;
CFURLRef myURL = CFURLCreateWithString(kCFAllocatorDefault, urlStringRef, NULL);
CFStringRef requestMethod = CFSTR("GET");

CFHTTPMessageRef myRequest = CFHTTPMessageCreateRequest(kCFAllocatorDefault, requestMethod, myURL, kCFHTTPVersion1_1);

self.httpMessageRef = CFHTTPMessageCreateCopy(kCFAllocatorDefault, myRequest);

CFReadStreamRef myReadStream = CFReadStreamCreateForHTTPRequest(kCFAllocatorDefault, myRequest);

// You can add body, headers.... using core function api, CFNetwork.etc

// below code is to set proxy from code if needs
NSString *hostKey;
NSString *portKey;
if ([[[urlString scheme] lowercaseString] isEqualToString:@"https"]) {
    hostKey = (NSString *)kCFStreamPropertyHTTPSProxyHost;
    portKey = (NSString *)kCFStreamPropertyHTTPSProxyPort;
} else {
    hostKey = (NSString *)kCFStreamPropertyHTTPProxyHost;
    portKey = (NSString *)kCFStreamPropertyHTTPProxyPort;
}

//set http or https proxy, change "localhost" to your proxy host, change "5566" to your proxy port 
NSMutableDictionary *proxyToUse = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"localhost",hostKey,[NSNumber numberWithInt:5566],portKey,nil];

CFReadStreamSetProperty(myReadStream, kCFStreamPropertyHTTPProxy, proxyToUse);
CFReadStreamOpen(myReadStream);

希望这可以帮到你。

忘记将自定义NSURLProtocol注册到您的代表。

Answer 2

您无法向NSURLRequest添加代理。您需要使用第三方库，例如 ASIHTTPRequest 。

// Configure a proxy server manually
NSURL *url = [NSURL URLWithString:@"http://allseeing-i.com/ignore"];
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url];
[request setProxyHost:@"192.168.0.1"];
[request setProxyPort:3128];

Answer 3

我已将以下代码用于Http代理。

let sessionConfiguration = NSURLSessionConfiguration.defaultSessionConfiguration();
sessionConfiguration.connectionProxyDictionary = [
    kCFNetworkProxiesHTTPEnable: true,
    kCFNetworkProxiesHTTPPort: myPortInt,
    kCFNetworkProxiesHTTPProxy: myProxyUrlString,
]
let url = NSURL(string: endPointUrl)
let postRequest = NSMutableURLRequest(URL: url!, cachePolicy: NSURLRequestCachePolicy.ReloadIgnoringLocalAndRemoteCacheData, timeoutInterval: 10.0)


let jsonString =  bodyString
postRequest.HTTPBody = jsonString 
postRequest.HTTPMethod = "POST"
postRequest.setValue("application/json", forHTTPHeaderField: "Content-Type")

let session = NSURLSession(configuration: sessionConfiguration)       
let task = session.dataTaskWithRequest(postRequest){}

iOS任何机构都知道如何向NSURLRequest添加代理？

3 个答案: