如何以编程方式将代理添加到NSURLSession [英] How to programmatically add a proxy to an NSURLSession

问题描述

查看 NSURLSession 和 NSURLSessionConfiguration 的文档，我的印象是我应该用字典配置它如下所示：

Looking over the documentation of NSURLSession and NSURLSessionConfiguration, I was under the impression I should configure it with a dictionary like the following:

    // Create a dictionary to describe the proxy 
    NSDictionary *proxyDict = @{
        (NSString *)kCFProxyHostNameKey   : @"myProxyHost.com",
        (NSString *)kCFProxyPortNumberKey : @"12345",
        (NSString *)kCFProxyTypeKey       : (NSString*)kCFProxyTypeHTTP
    };

    // Create a configuration that uses the dictionary
    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    [configuration setConnectionProxyDictionary:proxyDict];

然而，来自 NSURLSession 的请求是用这个配置直接连接。

However, the requests from NSURLSession created with this configuration connect directly.

推荐答案

事实证明，你想要的字典键是Stream变体，它们是解析的下到HTTPProxy等：

It turns out, the dictionary keys you want are the Stream variants, they are the ones that resolve down to "HTTPProxy" and such:

NSString* proxyHost = @"myProxyHost.com";
NSNumber* proxyPort = [NSNumber numberWithInt: 12345];

// Create an NSURLSessionConfiguration that uses the proxy
NSDictionary *proxyDict = @{
    @"HTTPEnable"  : [NSNumber numberWithInt:1],
    (NSString *)kCFStreamPropertyHTTPProxyHost  : proxyHost,
    (NSString *)kCFStreamPropertyHTTPProxyPort  : proxyPort,

    @"HTTPSEnable" : [NSNumber numberWithInt:1],
    (NSString *)kCFStreamPropertyHTTPSProxyHost : proxyHost,
    (NSString *)kCFStreamPropertyHTTPSProxyPort : proxyPort,
};

NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration ephemeralSessionConfiguration];
configuration.connectionProxyDictionary = proxyDict;

// Create a NSURLSession with our proxy aware configuration
NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration delegate:self delegateQueue:[NSOperationQueue mainQueue]];

// Form the request
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"https://www.google.com?2"]];

// Dispatch the request on our custom configured session
NSURLSessionDataTask *task = [session dataTaskWithRequest:request completionHandler:
                              ^(NSData *data, NSURLResponse *response, NSError *error) {
                                  NSLog(@"NSURLSession got the response [%@]", response);
                                  NSLog(@"NSURLSession got the data [%@]", data);
                              }];

NSLog(@"Lets fire up the task!");
[task resume];

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