这是我见过的最奇怪的事情。我有一部 iPhone 5 和一部 iPhone 5s,都在 iOS 7.1.2 上,完全干净。我运行以下代码:
NSString *userAgent = @"Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3";
NSURL *url = [NSURL URLWithString: deviceString];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc]initWithURL:url];
[request setValue:userAgent forHTTPHeaderField:@"User-Agent"];
NSHTTPURLResponse *response = nil;
NSError *error = nil;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSDictionary *dict = [response allHeaderFields];
NSLog(@"Status code: %d",[response statusCode]);
NSLog(@"Headers:\n %@",dict.description);
NSLog(@"Error: %@",error.description);
NSLog(@"Response data: %@",[[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);
iPhone 5s 返回了我正在寻找的正确页面源,并且与我从模拟器中获得的页面源相同。标题如下所示:
"Alternate-Protocol" = "80:quic";
"Cache-Control" = "no-cache";
"Content-Encoding" = gzip;
"Content-Length" = 5627;
"Content-Type" = "text/plain; charset=utf-8";
Date = "Fri, 01 Aug 2014 17:21:40 GMT";
Expires = "Tue, 27 Apr 1971 19:44:06 EST";
P3P = "CP=\"This is not a P3P policy! See http://support.google.com/accounts/bin/answer.py?answer=151657&hl=en for more info.\"";
Server = "gwiseguy/2.0";
"Set-Cookie" = "YSC=oohlyqgkgwg; path=/; domain=.youtube.com; httponly";
"X-Content-Type-Options" = nosniff;
"X-Frame-Options" = SAMEORIGIN;
"X-XSS-Protection" = "1; mode=block; report=https://www.google.com/appserve/security-bugs/log/youtube";
从 Content-Length 标头可以看出,iPhone 5 返回的内容不同,而且明显更短:
"Alternate-Protocol" = "80:quic";
"Cache-Control" = "no-cache";
"Content-Length" = 767;
"Content-Type" = "text/html; charset=utf-8";
Date = "Fri, 01 Aug 2014 17:23:06 GMT";
Expires = "Tue, 27 Apr 1971 19:44:06 EST";
P3P = "CP=\"This is not a P3P policy! See http://support.google.com/accounts/bin/answer.py?answer=151657&hl=en for more info.\"";
Server = "gwiseguy/2.0";
"Set-Cookie" = "YSC=2KFSqyO4p1k; path=/; domain=.youtube.com; httponly";
"X-Content-Type-Options" = nosniff;
"X-Frame-Options" = SAMEORIGIN;
"X-XSS-Protection" = "1; mode=block; report=https://www.google.com/appserve/security-bugs/log/youtube";
我很困惑。
编辑:
我现在发现了一个工作正常的 iPhone 5 和一个不工作的 iPhone 5s!?我们正在同一个 wifi 网络上进行测试,但手机在 AT&T 和 Verizon 服务之间分开。1 Verizon 正在运行,其他的则没有。所有 AT&T 都在工作。
更新:
我已经解决了这个问题。现在我需要一些帮助来理解我做了什么:/我注意到标题之间的区别是行"Content-Encoding" = gzip
所以我在我的代码中设置了这一行:
[request setValue:@"gzip" forHTTPHeaderField:@"Content-Encoding"];
现在请求按预期工作,但为什么我需要这样做?我过去没有,这不是一个新功能。