6
從安全URL下載安全牆後的圖像。一個URL,如https://foo.com/bar.pngNSURLSession變得間歇性SSLHandshake失敗(-9810)錯誤
有時我得到一個SSLHandshake錯誤。有時錯誤發生一次,但有時錯誤是不變的,我無法下載文件。
DownloadImageApp[2914] <Warning>: CHALLENGE!!! (NSURLAuthenticationMethodServerTrust)
DownloadImageApp[2914] <Warning>: server = foo.com
DownloadImageApp[2914] <Warning>: CFNetwork SSLHandshake failed (-9810)
DownloadImageApp[2914] <Warning>: CHALLENGE!!! (NSURLAuthenticationMethodServerTrust)
DownloadImageApp[2914] <Warning>: server = foo.com
DownloadImageApp[2914] <Warning>: CHALLENGE!!! (NSURLAuthenticationMethodNTLM)
DownloadImageApp[2914] <Warning>: NSURLAuthenticationMethodNTLM
我用下面的代碼來處理的挑戰
- (void)URLSession:(NSURLSession *)session didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition, NSURLCredential *))completionHandler {
NSLog(@"CHALLENGE!!! (%@)", challenge.protectionSpace.authenticationMethod);
if (challenge.error)
NSLog(@" -- error: %@", challenge.error.description);
if (challenge.previousFailureCount > 0)
NSLog(@" -- previous failure count = %d", challenge.previousFailureCount);
if (challenge.proposedCredential)
NSLog(@" -- proposed credential user: %@", challenge.proposedCredential.user);
if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
NSLog(@" server = %@", challenge.protectionSpace.host);
completionHandler(NSURLSessionAuthChallengeUseCredential, [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust]);
} else if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodNTLM]) {
NSLog(@" NSURLAuthenticationMethodNTLM");
NSURLCredential *credential = [NSURLCredential credentialWithUser:@"username" password:@"passwordIsSecretShhh" persistence:NSURLCredentialPersistenceForSession];
completionHandler(NSURLSessionAuthChallengeUseCredential, credential);
} else {
NSLog(@" ????");
}
}
即使它完全失敗,並不會加載我仍然可以彈出到Safari瀏覽器,在URL類型,有它加載。所以我正在尋找可能會導致此問題的想法,而不是網絡問題或託管Web服務器出現問題。
你有沒有得到任何解決這個握手錯誤? – Ekra
沒有。不是件事。我注意到它有時會重試並且工作正常,但偶爾會連續失敗3次,導致完全連接失敗。 – DBD