ios下https代理訪問認證問題

標籤：

在ios下，需要開啟https連結，但是如果其中使用了代理訪問，則會被預設返回認證驗證錯誤，無法正常訪問

通常是在國內訪問國外facebook的情況下

這是因為

https訪問的時候，會驗證一次認證，如果用了代理，認證驗證的時候會被認為有風險，則會拒絕掉串連

也就是為了避免中間人攻擊而做的限制

這裡可以考慮先用NSURLConnection建立一個https串連，讓本次針對目標地址的串連在驗證時忽略認證，就可以保證之後的串連再也沒認證驗證問題了

           NSString* strUrl = [NSString stringWithFormat:@https://graph.facebook.com/me];           NSURLRequest* reqUrl = [NSURLRequest requestWithURL:[NSURL URLWithString:strUrl]];           NSURLConnection* conn = [NSURLConnection connectionWithRequest:reqUrl delegate:self];                       [conn start]; - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    NSLog(@"connection didFailWithError result: %@", error);}- (BOOL)connectionShouldUseCredentialStorage:(NSURLConnection *)connection{    return NO;}- (void)connection:(NSURLConnection *)connection willSendRequestForAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{   //第一次驗證通過，之後取消驗證    if ([challenge previousFailureCount] ==0)            {        NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust]; 
       [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];             }    else    {                [[challenge sender] cancelAuthenticationChallenge:challenge];            }}// Deprecated authentication delegates.- (BOOL)connection:(NSURLConnection *)connection canAuthenticateAgainstProtectionSpace:(NSURLProtectionSpace *)protectionSpace{    return [protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust];}- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{   //第一次驗證通過，之後取消驗證    if ([challenge previousFailureCount] ==0)            {                NSURLCredential *credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];  
        [[challenge sender] useCredential:credential forAuthenticationChallenge:challenge];    }    else            {                [[challenge sender] cancelAuthenticationChallenge:challenge];            }}- (void)connection:(NSURLConnection *)connection didCancelAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge{    }- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    //做你需要做的事情}

不過這個最好看看最新的sdk支不支援了。。

ios下https代理訪問認證問題