iOS中的NSURLConnection和基本HTTP身份验证
iOS中的NSURLConnection和基本HTTP身份验证
提问于 2009-12-29 15:06:56
我需要用基本的Authentication调用一个初始GET HTTP request。这将是第一次将请求发送到服务器，并且我已经有了username & password，因此不需要来自服务器的授权质询。
第一个问题：
- 是否必须将
NSURLConnection设置为同步才能执行基本身份验证？根据此post上的答案，如果您选择异步路由，似乎无法执行基本身份验证。 - 是否有人知道在不需要质询响应的情况下说明
GET request上的基本身份验证的示例代码？Apple's documentation显示了一个示例，但仅在服务器向客户端发出质询请求之后。
我是SDK的网络部分的新手，我不确定我应该使用哪些其他类来使其工作。(我看到了NSURLCredential类，但它似乎只在客户端向服务器请求授权资源之后才与NSURLAuthenticationChallenge一起使用)。
回答 8
Stack Overflow用户
回答已采纳
发布于 2009-12-29 21:08:46
我使用MGTwitterEngine的异步连接，它在NSMutableURLRequest (theRequest)中设置授权，如下所示：
NSString *authStr = [NSString stringWithFormat:@"%@:%@", [self username], [self password]];
NSData *authData = [authStr dataUsingEncoding:NSASCIIStringEncoding];
NSString *authValue = [NSString stringWithFormat:@"Basic %@", [authData base64EncodingWithLineLength:80]];
[theRequest setValue:authValue forHTTPHeaderField:@"Authorization"];我不认为这种方法需要经历挑战循环，但我可能错了
Stack Overflow用户
发布于 2011-07-25 17:39:52
即使问题已经得到回答，我也想提出解决方案，它不需要外部库，我在另一个线程中找到的：
// Setup NSURLConnection
NSURL *URL = [NSURL URLWithString:url];
NSURLRequest *request = [NSURLRequest requestWithURL:URL
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:30.0];
NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
[connection start];
[connection release];
// NSURLConnection Delegates
- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
if ([challenge previousFailureCount] == 0) {
NSLog(@"received authentication challenge");
NSURLCredential *newCredential = [NSURLCredential credentialWithUser:@"USER"
password:@"PASSWORD"
persistence:NSURLCredentialPersistenceForSession];
NSLog(@"credential created");
[[challenge sender] useCredential:newCredential forAuthenticationChallenge:challenge];
NSLog(@"responded to authentication challenge");
}
else {
NSLog(@"previous authentication failure");
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
...
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
...
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
...
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
...
}Stack Overflow用户
发布于 2015-01-28 15:34:44
这是一个没有第三方参与的详细答案：
请在此处检查：
//username and password value
NSString *username = @“your_username”;
NSString *password = @“your_password”;
//HTTP Basic Authentication
NSString *authenticationString = [NSString stringWithFormat:@"%@:%@", username, password]];
NSData *authenticationData = [authenticationString dataUsingEncoding:NSASCIIStringEncoding];
NSString *authenticationValue = [authenticationData base64Encoding];
//Set up your request
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://www.your-api.com/“]];
// Set your user login credentials
[request setValue:[NSString stringWithFormat:@"Basic %@", authenticationValue] forHTTPHeaderField:@"Authorization"];
// Send your request asynchronously
[NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *responseCode, NSData *responseData, NSError *responseError) {
if ([responseData length] > 0 && responseError == nil){
//logic here
}else if ([responseData length] == 0 && responseError == nil){
NSLog(@"data error: %@", responseError);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Error accessing the data" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}else if (responseError != nil && responseError.code == NSURLErrorTimedOut){
NSLog(@"data timeout: %@”, NSURLErrorTimedOut);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"connection timeout" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}else if (responseError != nil){
NSLog(@"data download error: %@”,responseError);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"data download error" delegate:nil cancelButtonTitle:@"Close" otherButtonTitles:nil];
[alert show];
[alert release];
}
}]请让我知道你对此的反馈。
谢谢
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原文链接：
https://stackoverflow.com/questions/1973325
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