如何將驗證過的請求發送給Google Reader？

Question

Google似乎禁用了將cookie SID發送到其Google Data Services（特別是Google Reader）的舊方式。

This way不爲我至少工作：

//create request 
NSString* content = [NSString stringWithFormat:@"accountType=HOSTED_OR_GOOGLE&Email=%@&Passwd=%@&service=ah&source=myapp", [loginView username].text, [loginView password].text]; 
NSURL* authUrl = [NSURL URLWithString:@"https://www.google.com/accounts/ClientLogin"]; 
NSMutableURLRequest* authRequest = [[NSMutableURLRequest alloc] initWithURL:authUrl]; 
[authRequest setHTTPMethod:@"POST"]; 
[authRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-type"]; 
[authRequest setHTTPBody:[content dataUsingEncoding:NSASCIIStringEncoding]]; 

NSHTTPURLResponse* authResponse; 
NSError* authError; 
NSData * authData = [NSURLConnection sendSynchronousRequest:authRequest returningResponse:&authResponse error:&authError];  

NSString *authResponseBody = [[NSString alloc] initWithData:authData encoding:NSASCIIStringEncoding]; 

//loop through response body which is key=value pairs, seperated by \n. The code below is not optimal and certainly error prone. 
NSArray *lines = [authResponseBody componentsSeparatedByString:@"\n"]; 
NSMutableDictionary* token = [NSMutableDictionary dictionary]; 
for (NSString* s in lines) { 
     NSArray* kvpair = [s componentsSeparatedByString:@"="]; 
     if ([kvpair count]>1) 
       [token setObject:[kvpair objectAtIndex:1] forKey:[kvpair objectAtIndex:0]]; 
} 

//if google returned an error in the body [google returns Error=Bad Authentication in the body. which is weird, not sure if they use status codes] 
if ([token objectForKey:@"Error"]) { 
     //handle error 
}; 

和請求：

TTURLRequest *request = [TTURLRequest requestWithURL:url delegate:self]; 
request.cachePolicy = cachePolicy; 
request.cacheExpirationAge = TT_CACHE_EXPIRATION_AGE_NEVER; 

NSString *cookieHeader = [NSString stringWithFormat:@"Name=SID;SID=%@;Domain=.google.com;Path=/;Expires=160000000000", sid]; 
[request setValue:cookieHeader forHTTPHeaderField:@"Cookie"]; 

[request setHttpMethod:@"GET"]; 
[request setValue:@"myapp" forHTTPHeaderField:@"User-agent"]; 

更改使用的GoogleLogin AUTH = XXX給了我一個NSURLErrorDomain 401

TTURLRequest *request = [TTURLRequest requestWithURL:url delegate:self]; 
request.cachePolicy = cachePolicy; 
request.cacheExpirationAge = TT_CACHE_EXPIRATION_AGE_NEVER; 

NSString *authorizationHeader = [NSString stringWithFormat:@"GoogleLogin auth=%@", auth]; 
[request setValue:authorizationHeader forHTTPHeaderField:@"Authorization"]; 

[request setHttpMethod:@"GET"]; 
[request setValue:@"myapp" forHTTPHeaderField:@"User-agent"]; 

結果始終是401錯誤代碼。有人能告訴我如何解決這個特定情況？先謝謝你。

Error Domain=NSURLErrorDomain Code=401 "Operation could not be completed. (NSURLErrorDomain error 401.)" 
    Error description: Operation could not be completed. (NSURLErrorDomain error 401.) 

Answer 1

更改POST的正文解決了401錯誤。差異在service，source & continue。

NSString* content = [NSString stringWithFormat:@"Email=%@&Passwd=%@&service=reader&source=yourapp&continue=http://www.google.com", username, password];